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Cited by 898Extraction and Separation ProcessesElectric Vehicles and InfrastructureAdvancements in Battery Materials

Future material demand for automotive lithium-based batteries

Open access
Xu, Chengjian, Dai, Qiang, Gaines, Linda, Hu, Mingming, Tukker, Arnold, Steubing, Bernhard·2020·Communications Materials
DOI 10.1038/s43246-020-00095-x
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Abstract

The world is shifting to electric vehicles to mitigate climate change. Here, we quantify the future demand for key battery materials, considering potential electric vehicle fleet and battery chemistry developments as well as second-use and recycling of electric vehicle batteries. We find that in a lithium nickel cobalt manganese oxide dominated battery scenario, demand is estimated to increase by factors of 18–20 for lithium, 17–19 for cobalt, 28–31 for nickel, and 15–20 for most other materials from 2020 to 2050, requiring a drastic expansion of lithium, cobalt, and nickel supply chains and likely additional resource discovery. However, uncertainties are large. Key factors are the development of the electric vehicles fleet and battery capacity requirements per vehicle. If other battery chemistries were used at large scale, e.g. lithium iron phosphate or novel lithium-sulphur or lithium-air batteries, the demand for cobalt and nickel would be substantially smaller. Closed-loop recycling plays a minor, but increasingly important role for reducing primary material demand until 2050, however, advances in recycling are necessary to economically recover battery-grade materials from end-of-life batteries. Second-use of electric vehicles batteries further delays recycling potentials.

AI snapshot

Written from the paper’s full text.

TL;DR

This paper uses global scenarios and a dynamic material flow analysis to quantify future demand for electric vehicle battery materials through 2050 under fleet, chemistry, recycling, and second-use assumptions. It finds large increases in lithium, cobalt, and nickel demand in NCX-dominated scenarios, with alternative chemistries and recycling reducing but not eliminating primary supply pressure.

Key findings

  • In a lithium nickel cobalt manganese oxide dominated battery scenario, demand from 2020 to 2050 is estimated to increase by factors of 18–20 for lithium, 17–19 for cobalt, 28–31 for nickel, and 15–20 for most other materials.
  • Cumulative demand from 2020–2050 ranges from 7.3–18.3 Mt for Li, 3.5–16.8 Mt for Co, and 18.1–88.9 Mt for Ni across fleet and battery chemistry scenarios.
  • Large-scale use of LFP or Li-S/Li-Air batteries substantially lowers cobalt and nickel demand; cumulative Ni and Co demand is 2–2.5 times higher in the NCX scenario than in the LFP and Li-S/Air scenarios, with a factor of 4–5 between SD-NCX and STEP-LFP or STEP-Li-S/Air.
  • Recycling at best reduces cumulative material demand by 20–23% for Li, 26–44% for Co, and 22–38% for Ni until 2050; closed-loop recycling potential is below 10% in the current decade but may reach 20–71% during 2040–2050, and second-use delays recycling.

Methods

  • A dynamic stock-driven material flow analysis model with EV, battery, and material layers; EV fleet scenarios based on IEA STEP and SD scenarios until 2030, extended to 2050 using logistic growth; battery chemistry scenarios include NCX, LFP, and Li-S/Air; recycling scenarios include pyrometallurgical, hydrometallurgical, and direct recycling, plus second-use.
  • Battery material compositions are calculated with the BatPaC model version 3.1 for BEVs and PHEVs across small, mid-size, and large segments and eight battery chemistries; assumed average capacities are 66 kWh for BEVs and 12 kWh for PHEVs.
  • Sensitivity analyses cover battery lifespan, required battery capacity per vehicle (10 kWh PHEV to 110 kWh BEV extremes), 100% market shares of LFP or Li-S/Li-Air, and higher specific energies for Li-S and Li-Air chemistries.

Limitations

  • Stated: uncertainties are large; key factors are EV fleet development and battery capacity requirements per vehicle; advances in recycling are necessary to economically recover battery-grade materials; second-use delays recycling; direct recycling is largely unproven outside the lab; Li-S and Li-Air market readiness and lifespans are uncertain.
  • Stated/model assumptions: 100% collection rates, technical battery lifespans, no EV-to-EV battery remanufacture or reuse, and no additional demand from heavy-duty vehicles or other sectors; results are global and do not resolve regional supply risks.
  • Evident: the scenarios are exploratory what-if projections rather than forecasts, and the sensitivity bounds—all PHEVs with 10 kWh batteries versus all large SUVs with 110 kWh batteries—show that demand depends heavily on assumed battery capacity and fleet composition.

Model-written summary. Check it against the paper before relying on it.

Integrity signals

Registry

Crossref · 10.1038/s43246-020-00095-x

Cites

49 of 49 references verified0 citation errors · 0 not checkable

Statistics

Nothing to recompute.

Claims the paper makes

0 of 75 cited sources checked · 0 supported · 0 flagged

  • Findingnone given

    Closed-loop recycling plays a minor but increasingly important role in reducing primary material demand until 2050.

    “Closed-loop recycling plays a minor, but increasingly important role for reducing primary material demand until 2050”
    Quote in the paperSubstantial claim
  • Findingnone given

    If other battery chemistries such as lithium iron phosphate or novel lithium-sulphur or lithium-air batteries were used at large scale, demand for cobalt and nickel would be substantially smaller.

    “If other battery chemistries were used at large scale, e.g.lithium iron phosphate or novel lithium-sulphur or lithium-air batteries, the demand for cobalt and nickel would be substantially smaller.”
    Quote in the paperSubstantial claim
  • Findingown data

    Demand for Li is only slightly influenced by the battery chemistry scenario.

    “The demand for Li is only slightly influenced by the battery chemistry scenario”
    Quote in the paperNot a substantial claim
  • Findingreasoning

    Uncertainties in the demand projections are large.

    “However, uncertainties are large.”
    Quote in the paperNot a substantial claim
  • Findingown data

    Cumulative demand for Ni and Co is 2-2.5 times higher in the NCX compared to the LFP and Li-S/Air scenarios.

    “2-2.5 times higher for Ni and Co in the NCX compared to the LFP and Li-S/Air scenarios”
    Quote in the paperSubstantial claim
  • May combine two claims. 46
  • Classified as probably not a substantial claim. 15

  • May combine two claims.

    Findingown data

    From 2020 to 2050 in the STEP scenario, Li demand would rise by a factor of 17-21, Co by 7-17, and Ni by 11-28.

    “From 2020 to 2050 in the more conservative STEP scenario, Li demand would rise by a factor of 17-21 (from 0.036 Mt to 0.62-0.77Mt), Co by a factor of 7-17 (from 0.035 Mt to 0.25-0.62Mt), and Ni demand by a factor of 11-28 (from 0.13 Mt to 1.5-3.7 Mt)”
    Quote in the paperSubstantial claim

  • May combine two claims.

    Findingreasoning

    Global fleet penetration of EVs in 2050 will be 25% in the STEP scenario and 50% in the SD scenario.

    “the global fleet penetration of EVs in 2050 will be 25% in the STEP scenario and 50% in the SD scenario”
    Quote in the paperSubstantial claim

  • Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based).

    Findingnone given

    Second-use of electric vehicle batteries further delays recycling potentials.

    “Second-use of electric vehicles batteries further delays recycling potentials.”
    Quote in the paperNot a substantial claim

  • May combine two claims.

    Findingreasoning

    In the SD scenario, the EV stock will increase by a factor of 102 from 2020-2050 to 2 billion vehicles and annual EV sales will rise to 211 million vehicles.

    “In the SD scenario, the EV stock will increase by a factor of 102 from 2020-2050 to 2 billion vehicles and annual EV sales will rise to 211 million vehicles”
    Quote in the paperSubstantial claim

  • May combine two claims.

    Findingown data

    In an NCX-dominated battery scenario, demand from 2020 to 2050 is estimated to increase by factors of 18-20 for lithium, 17-19 for cobalt, 28-31 for nickel, and 15-20 for most other materials.

    “in a lithium nickel cobalt manganese oxide dominated battery scenario, demand is estimated to increase by factors of 18-20 for lithium, 17-19 for cobalt, 28-31 for nickel, and 15-20 for most other materials from 2020 to 2050”
    Quote in the paperSubstantial claim

  • May combine two claims.

    Findingown data

    Cumulative demand from 2020-2050 ranges from 7.3-18.3 Mt for Li, 3.5-16.8 Mt for Co, and 18.1-88.9 Mt for Ni across fleet and battery chemistry scenarios.

    “It ranges from 7.3-18.3Mt for Li, 3.5-16.8Mt for Co, and 18.1-88.9Mt for Ni across fleet and battery chemistry scenarios”
    Quote in the paperSubstantial claim

  • May combine two claims.

    Findingown data

    In the STEP scenario, about 6 TWh of battery capacity will be required annually by 2050, and 12 TWh in the SD scenario.

    “in the STEP scenario ~6 TWh of battery capacity will be required annually by 2050 (and 12 TWh in the SD scenario”
    Quote in the paperSubstantial claim

  • May combine two claims.

    Findingown data

    In the STEP scenario, the EV stock will increase by a factor of 72 from 2020-2050 to nearly 1 billion vehicles and annual EV sales will rise to 109 million vehicles.

    “In the STEP scenario, the EV stock will increase by a factor of 72 from 2020-2050 to nearly 1 billion vehicles and annual EV sales will rise to 109 million vehicles”
    Quote in the paperSubstantial claim

  • May combine two claims.

    Findingown data

    End-of-life batteries contain 0.21-0.52 Mt of Li, 0.10-0.52 Mt of Co, and 0.49-2.52 Mt of Ni in 9-27 Mt EoL batteries.

    “Figure 3b shows the materials contained in end-of-life (EoL) batteries over time (0.21-0.52Mt of Li, 0.10-0.52Mt of Co, and 0.49-2.52Mt of Ni in 9-27 Mt EoL batteries”
    Quote in the paperSubstantial claim

  • May combine two claims.

    Findingreasoning

    Mn and Si follow the same trend as Ni and Co in the three battery scenarios because they are also not used in LFP, Li-S, and Li-Air batteries.

    “Mn and Si follow the same trend as Ni and Co in the three battery scenarios as they are also not used in LFP, Li-S, and Li-Air batteries.”
    Quote in the paperNot a substantial claim

  • May combine two claims.

    Findingcitation

    EVs will make up 8-14% of the total light-duty vehicle fleet by 2030, with 89-166 million BEVs and 46-71 million PHEVs.

    “EVs will make up 8-14% of the total light-duty vehicle fleet by 2030, of which 89-166 million are battery electric vehicles (BEVs) and 46-71 million are plug-in hybrid electric vehicles (PHEVs)”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [3] Global EV Outlook 2020: Entering the decade of electric drive? (International Energy Agency, 2020). https://www.iea.org/reports/global-ev-outlook-2020.

      Not checked in the free run.

  • May combine two claims.

    Findingreasoning

    Battery recycling has at best the potential to reduce 20-23% of cumulative Li demand until 2050 (8% for Li metal), 26-44% for Co, and 22-38% for Ni.

    “battery recycling has, at best, the potential to reduce 20-23% of the cumulative material demand for Li until 2050 (8% for Li metal), 26-44% for Co, and 22-38% for Ni”
    Quote in the paperSubstantial claim

  • May combine two claims.

    Findingcitation

    For cobalt, our estimations (0.25-1.25 Mt) are in line with predictions by Weil et al. (0.3-1.1 Mt) and likely considerably higher than Deetman et al. (0.06-0.62 Mt).

    “For cobalt our estimations (0.25-1.25 Mt) are in-line with the predictions by Weil et al. 9 (0.3-1.1 Mt) despite important differences in underlying scenarios and likely considerably higher than Deetman et al. 16 (0.06-0.62 Mt).”
    Quote in the paperNot a substantial claim0 of 2 sources checked
    • cites [9] Weil, M., Ziemann, S. & Peters, J. The Issue of Metal Resources in Li-Ion Batteries for Electric Vehicles. in Behaviour of Lithium-Ion Batteries in Electric Vehicles: Battery Health, Performance, Safety, and Cost (eds Pistoia, G. & Liaw, B.) 59–74 (Springer, 2018). source

      Not checked in the free run.

    • cites [16] Deetman, S., Pauliuk, S., van Vuuren, D. P., van der Voet, E. & Tukker, A. Scenarios for demand growth of metals in electricity generation technologies, cars, and electronic appliances. Environ. Sci. Technol. 52, 4950–4959 (2018). source

      Not checked in the free run.

  • May combine two claims.

    Findingown data

    If a significant share of batteries experience second-use, recovery of that material will be delayed and CLRP will be substantially lower for the decades to come.

    “If a significant share of batteries experience a second-use, the recovery of that material will be delayed in time and thus the CLRP will be substantially lower for the decades to come”
    Quote in the paperSubstantial claim

  • May combine two claims.

    Findingown data

    According to our model, lithium demand for EV batteries in 2050 (0.6-1.5 Mt) could be significantly lower than projected by Weil et al. (1.1-1.7 Mt) and likely higher than projected by Hao et al. (0.65 Mt), Deetman et al. (0.05-0.8 Mt), and Ziemann et al. (0.37-1.43 Mt).

    “According to our model, lithium demand for EV batteries in 2050 (0.6-1.5 Mt) could be significantly lower than projected by Weil et al. 9 (1.1-1.7 Mt) and likely higher than projected by Hao et al. 15 (0.65 Mt), Deetman et al. 16 (0.05-0.8 Mt), and Ziemann et al. 14 (0.37-1.43 Mt).”
    Quote in the paperSubstantial claim0 of 4 sources checked
    • cites [9] Weil, M., Ziemann, S. & Peters, J. The Issue of Metal Resources in Li-Ion Batteries for Electric Vehicles. in Behaviour of Lithium-Ion Batteries in Electric Vehicles: Battery Health, Performance, Safety, and Cost (eds Pistoia, G. & Liaw, B.) 59–74 (Springer, 2018). source

      Not checked in the free run.

    • cites [15] Hao, H. et al. Impact of transport electrification on critical metal sustainability with a focus on the heavy-duty segment. Nat. Commun. 10, 5398 (2019). source

      Not checked in the free run.

    • cites [16] Deetman, S., Pauliuk, S., van Vuuren, D. P., van der Voet, E. & Tukker, A. Scenarios for demand growth of metals in electricity generation technologies, cars, and electronic appliances. Environ. Sci. Technol. 52, 4950–4959 (2018). source

      Not checked in the free run.

    • cites [14] Ziemann, S., Müller, D. B., Schebek, L. & Weil, M. Modeling the potential impact of lithium recycling from EV batteries on lithium demand: a dynamic MFA approach. Resour. Conserv. Recycl. 133, 76–85 (2018). source

      Not checked in the free run.

  • May combine two claims.

    Findingreasoning

    CLRP for Co and Ni is higher in the LFP and Li-S/Air scenarios because LFP, Li-S, and Li-Air chemistries do not require these materials and the total quantity of required materials for NCX batteries is growing much slower or stagnating.

    “The CLRP for Co and Ni are higher in the LFP and Li-S/Air scenarios, since LFP, Li-S, and Li-Air battery chemistries do not require these materials and the total quantity of required materials for NCX batteries is growing much slower or even stagnating for some time”
    Quote in the paperSubstantial claim

  • May combine two claims.

    Findingown data

    The closed-loop recycling potential (CLRP) is small for the current decade (below 10%) but may reach 20-71% during 2040-2050.

    “While the CLRP is small for the current decade (below 10%) it may reach as much as 20-71% during 2040-2050.”
    Quote in the paperSubstantial claim

  • May combine two claims.

    Findingreasoning

    CLRP of Li and Ni does not exceed 31% in the NCX and LFP scenario due to continued growth of NCX chemistries, while it surpasses 50% in the Li-S/Air scenario (71% for Co) in 2040-2050 due to the higher stock of NCX batteries built up until 2030.

    “Note that CLRP of Li and Ni does not exceed 31% in the NCX and LFP scenario due to the continued growth of NCX chemistries, while it surpasses 50% in the Li-S/Air scenario (71% for Co) in 2040-2050 due to the higher stock of NCX batteries built up until 2030 when Li-S/ Air chemistries are introduced”
    Quote in the paperSubstantial claim

  • May combine two claims.

    Findingown data

    Known reserves for Li, Ni, and Co could be depleted before 2050 in the SD scenario and for Co also in the STEP scenario.

    “The known reserves for Li, Ni, and Co (black lines in Fig. 4) could be depleted before 2050 in the SD scenario and for Co also in the STEP scenario.”
    Quote in the paperSubstantial claim

  • May combine two claims.

    Findingown data

    For nickel, our estimations (1.5-7.6 Mt) partly overlap but are generally higher than those by Weil et al. (0.6-2.6).

    “For nickel our estimations (1.5-7.6 Mt) partly overlap but are generally higher than those by Weil et al. 9 (0.6-2.6).”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [9] Weil, M., Ziemann, S. & Peters, J. The Issue of Metal Resources in Li-Ion Batteries for Electric Vehicles. in Behaviour of Lithium-Ion Batteries in Electric Vehicles: Battery Health, Performance, Safety, and Cost (eds Pistoia, G. & Liaw, B.) 59–74 (Springer, 2018). source

      Not checked in the free run.

  • May combine two claims.

    Findingown data

    Second-use postpones the time of recycling, reduces the closed-loop recycling potentials and thus the availability of secondary materials in the coming decades.

    “Gray dots show how second-use, which postpones the time of recycling, reduces the closed-loop recycling potentials and thus the availability of secondary materials in the coming decades.”
    Quote in the paperNot a substantial claim
    • Rests on an assumption: Recycling of end-of-life batteries provides a secondary supply of materials.

  • May combine two claims.

    Premisecitation

    Li-S batteries could reach two times and Li-Air batteries up to three times the specific energy of current LIBs, likely leading to cost reductions and improved EV ranges.

    “Li-S batteries could reach two times and Li-Air batteries up to three times the specific energy of current LIBs, which would likely lead to cost reductions and improved EV ranges”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [23] Cano, Z. P. et al. Batteries and fuel cells for emerging electric vehicle markets. Nat. Energy 3, 279–289 (2018). source

      Not checked in the free run.

  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Weil et al. found that shortages for key materials such as Li and Co can be expected at the global level.

    “Weil et al. 9 assess the material demand for EV batteries at the global level and find that shortages for key materials, such as Li and Co, can be expected.”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [9] Weil, M., Ziemann, S. & Peters, J. The Issue of Metal Resources in Li-Ion Batteries for Electric Vehicles. in Behaviour of Lithium-Ion Batteries in Electric Vehicles: Battery Health, Performance, Safety, and Cost (eds Pistoia, G. & Liaw, B.) 59–74 (Springer, 2018). source

      Not checked in the free run.

  • May combine two claims.

    Interpretationnone given

    The development of the electric vehicle fleet and battery capacity requirements per vehicle are key factors for future material demand.

    “Key factors are the development of the electric vehicles fleet and battery capacity requirements per vehicle.”
    Quote in the paperSubstantial claim

  • Classified as probably not a substantial claim.

    Interpretationnone given

    Material requirements depend on the choice of battery chemistries used.

    “The material requirements depend on the choice of battery chemistries used.”
    Quote in the paperSubstantial claim

  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Commonly used LIB cathode chemistries are NCM, NCA, or LFP.

    “Commonly used LIB cathode chemistries are lithium nickel cobalt manganese oxide (NCM), lithium nickel cobalt aluminum oxide (NCA), or lithium iron phosphate (LFP)”
    Quote in the paperNot a substantial claim0 of 2 sources checked
    • cites [2] Deng, J., Bae, C., Denlinger, A. & Miller, T. Electric vehicles batteries: requirements and challenges. Joule 4, 511–515 (2020). source

      Not checked in the free run.

    • cites [4] Ponrouch, A. & Rosa Palacín, M. Post-Li batteries: promises and challenges. Philos. Trans. R. Soc. A 377, 20180297 (2019). source

      Not checked in the free run.

  • May combine two claims.

    Premisecitation

    Li-S and Li-Air batteries are still in early development and considerable challenges remain before commercialization, such as low cycle life and safety issues.

    “Although Li-S and Li-Air batteries are still in early development and considerable challenges remain to be solved before commercialization, e.g., low cycle life and safety issues”
    Quote in the paperNot a substantial claim0 of 2 sources checked
    • cites [2] Deng, J., Bae, C., Denlinger, A. & Miller, T. Electric vehicles batteries: requirements and challenges. Joule 4, 511–515 (2020). source

      Not checked in the free run.

    • cites [4] Ponrouch, A. & Rosa Palacín, M. Post-Li batteries: promises and challenges. Philos. Trans. R. Soc. A 377, 20180297 (2019). source

      Not checked in the free run.

  • Probably not a substantial claim: may not pass S4 (based).

    Interpretationnone given

    Advances in recycling are necessary to economically recover battery-grade materials from end-of-life batteries.

    “advances in recycling are necessary to economically recover battery-grade materials from end-of-life batteries”
    Quote in the paperNot a substantial claim

  • May combine two claims.

    Interpretationown data

    The projected demand increases require a drastic expansion of lithium, cobalt, and nickel supply chains and likely additional resource discovery.

    “requiring a drastic expansion of lithium, cobalt, and nickel supply chains and likely additional resource discovery”
    Quote in the paperSubstantial claim

  • May combine two claims.

    Premisenone given

    Weil et al.'s model does not investigate the influence of battery chemistry developments, alternative fleet scenarios, or different recycling scenarios.

    “However, their model does not investigate the influence of battery chemistry developments (e.g., improved NCM chemistries or novel lithium-sulphur (Li-S) and lithiumair batteries (Li-Air)) as well as alternative fleet and different recycling scenarios.”
    Quote in the paperNot a substantial claim

  • May combine two claims.

    Premisecitation

    Battery producers are seeking to replace costly cobalt with nickel, leading to an evolution from NCM111 to NCM523, NCM622, and NCM811 batteries.

    “Battery producers are seeking to replace costly cobalt with nickel, which has led to an evolution from NCM111 to NCM523, NCM622, and NCM811 batteries”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [17] The Rechargeable Battery Market and Main Trends 2018–2030 (Avicenne Energy, 2019). https://www.bpifrance.fr/content/download/76854/831358/file/02%20-%20Presentation%20Avicenne%20-%20Christophe%20Pillot%20-%2028%20Mai%202019.pdf.

      Not checked in the free run.

  • Probably not a substantial claim: may not pass S2 (checkable), S3 (load-bearing). May combine two claims.

    Premisecitation

    Battery technology is evolving fast and new and improved chemistries can be expected in the future.

    “battery technology is currently evolving fast and new and improved chemistries can be expected in the future”
    Quote in the paperNot a substantial claim0 of 2 sources checked
    • cites [2] Deng, J., Bae, C., Denlinger, A. & Miller, T. Electric vehicles batteries: requirements and challenges. Joule 4, 511–515 (2020). source

      Not checked in the free run.

    • cites [4] Ponrouch, A. & Rosa Palacín, M. Post-Li batteries: promises and challenges. Philos. Trans. R. Soc. A 377, 20180297 (2019). source

      Not checked in the free run.

  • May combine two claims.

    Premisecitation

    Advantages of LFPs are lower production costs due to abundant precursor materials, safety due to better thermal stability, and longer cycle life.

    “Advantages of LFPs are lower production costs due to the abundance of precursor materials, safety due to better thermal stability, and longer cycle life”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [20] Nitta, N., Wu, F., Lee, J. T. & Yushin, G. Li-ion battery materials: present and future. Mater. Today 18, 252–264 (2015). source

      Not checked in the free run.

  • May combine two claims.

    Premisecitation

    Global average market penetration of EVs was around 1.5% in 2019 and future growth is expected to dwarf past growth in absolute numbers.

    “the global average market penetration of EVs is still just around 1.5% in 2019 and future growth is expected to dwarf past growth in absolute numbers”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [3] Global EV Outlook 2020: Entering the decade of electric drive? (International Energy Agency, 2020). https://www.iea.org/reports/global-ev-outlook-2020.

      Not checked in the free run.

  • May combine two claims.

    Premisecitation

    In 2019 around 64% of natural graphite and 64% of Si were produced in China, which could create vulnerabilities to supply reliability.

    “In 2019 around 64% of natural graphite and 64% of Si are produced in China 32 , which could create vulnerabilities to supply reliability”
    Quote in the paperNot a substantial claim0 of 2 sources checked
    • cites [32] Mineral Commodity Summaries 2020 (USGS, 2020). https://pubs.usgs.gov/periodicals/mcs2020/mcs2020.pdf.

      Not checked in the free run.

    • cites [33] Study on Critical Raw Materials at EU Level (Oakdene Hollins and Fraunhofer ISI, 2013). http://ec.europa.eu/DocsRoom/documents/5605/attachments/1/translations/en/renditions/native.

      Not checked in the free run.

  • May combine two claims.

    Premisecitation

    Synthetic graphite has begun to dominate the LIB graphite anode market (56% market share in 2018) due to superior performance and decreasing cost over natural graphite.

    “However, synthetic graphite has begun to dominate the LIB graphite anode market (56% market share in 2018) due to its superior performance and decreasing cost over natural graphite”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [17] The Rechargeable Battery Market and Main Trends 2018–2030 (Avicenne Energy, 2019). https://www.bpifrance.fr/content/download/76854/831358/file/02%20-%20Presentation%20Avicenne%20-%20Christophe%20Pillot%20-%2028%20Mai%202019.pdf.

      Not checked in the free run.

  • May combine two claims.

    Premisecitation

    Co reserves are geographically more concentrated and partly in conflict areas, increasing potential supply risks.

    “In contrast to Li and Ni, Co reserves are also geographically more concentrated and partly in conflict areas 35 , thus increasing potential supply risks”
    Quote in the paperSubstantial claim0 of 2 sources checked
    • cites [35] Alves Dias, P., Blagoeva, D., Pavel, C. & Arvanitidis, N. Cobalt: demand-supply balances in the transition to electric mobility. Publications Office of the European Union 10, 97710 (2018).

      Not checked in the free run.

    • cites [5] Olivetti, E. A., Ceder, G., Gaustad, G. G. & Fu, X. Lithium-ion battery supply chain considerations: analysis of potential bottlenecks in critical metals. Joule 1, 229–243 (2017). source

      Not checked in the free run.

  • Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based).

    Interpretationnone given

    The most economically and environmentally promising technology for closed-loop recycling, although currently largely unproven outside the lab, is direct recycling, which could recover cathode material as is without intermediate smelting or leaching.

    “The most economically and environmentally promising technology for closed-loop recycling, although currently largely unproven outside of the lab, is direct recycling, which could recover cathode material”
    Quote in the paperNot a substantial claim

  • Probably not a substantial claim: may not pass S2 (checkable), S3 (load-bearing).

    Interpretationreasoning

    Truly circular EV batteries will not be available anytime soon.

    “Truly circular EV batteries will not be available anytime soon.”
    Quote in the paperNot a substantial claim

  • May combine two claims.

    Interpretationreasoning

    Lower battery lifespans could require additional battery replacements and lead to considerably higher material demand.

    “Lower battery lifespans could require additional battery replacements and thus lead to considerably higher material demand”
    Quote in the paperSubstantial claim

  • May combine two claims.

    Premisecitation

    EVs with 80% residual battery capacity could still meet daily travel requirements in 85% of cases in the US, and widespread charging infrastructure could further support this.

    “EVs with 80% residual battery capacity could still meet daily travel requirements in 85% of cases in the US 40 and widespread charging infrastructure could further support this”
    Quote in the paperNot a substantial claim0 of 2 sources checked
    • cites [40] Saxena, S., Le Floch, C., MacDonald, J. & Moura, S. Quantifying EV battery end-of-life through analysis of travel needs with vehicle powertrain models. J. Power Sources 282, 265–276 (2015). source

      Not checked in the free run.

    • cites [41] Neubauer, J. & Wood, E. The impact of range anxiety and home, workplace, and public charging infrastructure on simulated battery electric vehicle lifetime utility. J. Power Sources 257, 12–20 (2014). source

      Not checked in the free run.

  • May combine two claims.

    Interpretationnone given

    Li-S and Li-Air batteries would reduce dependency on Co and Ni while offering higher energy densities.

    “As shown here, Li-S and Li-Air batteries would reduce the dependency on Co, and Ni, while offering higher energy densities.”
    Quote in the paperSubstantial claim

  • May combine two claims.

    Interpretationown data

    Battery manufacturers are already seeking to decrease reliance on cobalt, but an absolute decoupling is unlikely to occur in the coming decades.

    “Battery manufacturers are already seeking to decrease their reliance on cobalt, e.g., by lowering the Co content of NCM batteries; however, as shown in Fig. 3, an absolute decoupling is unlikely to occur in the coming decades.”
    Quote in the paperSubstantial claim

  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Interpretationcitation

    It is possible that the outlined supply risks change, for example with the discovery of new reserves.

    “Obviously, it is possible that the outlined supply risks change, e.g., with the discovery of new reserves”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [36] Prior, T., Giurco, D., Mudd, G., Mason, L. & Behrisch, J. Resource depletion, peak minerals and the implications for sustainable resource management. Glob. Environ. Change 22, 577–587 (2012). source

      Not checked in the free run.

  • May combine two claims.

    Premisecitation

    Both slag and solid waste could be refined to produce battery-grade lithium carbonate, but lithium has hardly been recovered so far because the lithium price did not enable cost-effective recovery.

    “Both slag and solid waste could be refined to produce battery-grade lithium carbonate; however, lithium has hardly been recovered so far as the lithium price did not enable a cost-effective recovery”
    Quote in the paperNot a substantial claim0 of 2 sources checked
    • cites [9] Weil, M., Ziemann, S. & Peters, J. The Issue of Metal Resources in Li-Ion Batteries for Electric Vehicles. in Behaviour of Lithium-Ion Batteries in Electric Vehicles: Battery Health, Performance, Safety, and Cost (eds Pistoia, G. & Liaw, B.) 59–74 (Springer, 2018). source

      Not checked in the free run.

    • cites [45] Meng, F., McNeice, J., Zadeh, S. S. & Ghahreman, A. Review of lithium production and recovery from minerals, brines, and lithium-ion batteries. Miner. Process Extr. Metall. Rev. https://doi.org/10.1080/08827508.2019.1668387 (2019). source

      Not checked in the free run.

  • May combine two claims.

    Premisecitation

    Challenges for direct recycling include developing sorting processes to separate cathode powder from different battery chemistries, relithiation and upgrading processes for obsolete cathode chemistries, and further standardization of batteries.

    “Challenges for direct recycling include the development of sorting processes that can separate cathode powder from different battery chemistries, relithiation and upgrading processes for cathode chemistries that have become obsolete and further standardization of batteries to support effective recycling”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [46] Chen, M. et al. Recycling end-of-life electric vehicle lithium-ion batteries. Joule 3, 2622–2646 (2019). source

      Not checked in the free run.

  • May combine two claims.

    Interpretationcitation

    Closed-loop recycling will gain importance, depending on EV fleet and battery chemistry developments, second-use, and other factors such as standardization, legislation, business models, eco-design, collection systems, and recycling technology.

    “Closed-loop recycling will gain importance, depending on EV fleet and battery chemistry developments, second-use, and other factors, such as standardization 42 , legislation, business models 43 , eco-design or design for recycling 44 , collection systems, and recycling technology”
    Quote in the paperNot a substantial claim0 of 5 sources checked
    • cites [42] Brown, S., Pyke, D. & Steenhof, P. Electric vehicles: the role and importance of standards in an emerging market. Energy Policy 38, 3797–3806 (2010). source

      Not checked in the free run.

    • cites [43] Prior, T., Wäger, P. A., Stamp, A., Widmer, R. & Giurco, D. Sustainable governance of scarce metals: the case of lithium. Sci. Total Environ. 461–462, 785–791 (2013). source

      Not checked in the free run.

    • cites [44] Zwolinski, P. & Tichkiewitch, S. An agile model for the eco-design of electric vehicle Li-ion batteries. CIRP Ann. 68, 161–164 (2019). source

      Not checked in the free run.

    • cites [26] Mayyas, A., Steward, D. & Mann, M. The case for recycling: overview and challenges in the material supply chain for automotive li-ion batteries. Sustain. Mater. Technol. 19, e00087 (2019).

      Not checked in the free run.

    • cites [29] Harper, G. et al. Recycling lithium-ion batteries from electric vehicles. Nature 575, 75–86 (2019). source

      Not checked in the free run.

  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Premisecitation

    Direct recycling aims at recovering cathode materials while maintaining their chemical structures, which could be economically and environmentally advantageous, but it is currently still in early development stages.

    “Direct recycling aims at recovering cathode materials while maintaining their chemical structures, which could be economically and environmentally advantageous 28 ; however, it is currently still in early development stages”
    Quote in the paperNot a substantial claim0 of 2 sources checked
    • cites [28] Ciez, R. E. & Whitacre, J. F. Examining different recycling processes for lithium-ion batteries. Nat. Sustain. 2, 148–156 (2019). source

      Not checked in the free run.

    • cites [29] Harper, G. et al. Recycling lithium-ion batteries from electric vehicles. Nature 575, 75–86 (2019). source

      Not checked in the free run.

  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Study design and conductown data

    A sensitivity analysis is conducted to obtain upper and lower bounds for material requirements if all vehicles were large BEV or small PHEV.

    “a sensitivity analysis is conducted to obtain the upper and lower bounds for material requirements if all vehicles were large BEV or small PHEV”
    Quote in the paperNot a substantial claim

  • May combine two claims.

    Premisecitation

    The second-use applications vary from home use to electricity system integration, resulting in the second-use lifespan varying from 6 to 30 years.

    “The second-use applications vary from home use to electricity system integration, resulting in the second-use lifespan varying from 6 to 30 years 75 .”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [75] Casals, L. C., García, B. A. & Canal, C. Second life batteries lifespan: rest of useful life and environmental analysis. J. Environ. Manag. 232, 354–363 (2019). source

      Not checked in the free run.

  • May combine two claims.

    Premisecitation

    LFP batteries have long cycle life and reduced chance of cascading failure.

    “Here we distinguish the second-use rates of LFP and other chemistries due to the long cycle life 20 and the reduced chance of cascading failure of LFP 74 .”
    Quote in the paperSubstantial claim0 of 2 sources checked
    • cites [20] Nitta, N., Wu, F., Lee, J. T. & Yushin, G. Li-ion battery materials: present and future. Mater. Today 18, 252–264 (2015). source

      Not checked in the free run.

    • cites [74] Said, A. O., Lee, C. & Stoliarov, S. I. Experimental investigation of cascading failure in 18650 lithium ion cell arrays: impact of cathode chemistry. J. Power Sources 446, 227347 (2020). source

      Not checked in the free run.

  • May combine two claims.

    Premisecitation

    Passenger car lifespans vary from 9 to 23 years among countries, with an average lifespan of around 15 years.

    “Passenger car lifespans have been found to vary from 9 to 23 years among countries with average lifespan of around 15 years 56 .”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [56] Oguchi, M. & Fuse, M. Regional and longitudinal estimation of product lifespan distribution: a case study for automobiles and a simplified estimation method. Environ. Sci. Technol. 49, 1738–1743 (2015). source

      Not checked in the free run.

  • May combine two claims.

    Premisecitation

    Current major battery roadmaps in the US, EU, Germany, and China focus on cathode material development considering high-energy NCM (transition to low cobalt and high nickel content) and NCA based chemistries to be the likely next generation of LIBs for EVs in the next decade, as well as anode material development considering adding Si to graphite anode.

    “Although various EV battery chemistries have been developed for EVs to decrease cost and improve performance, current major battery roadmaps in US 58 , EU 25 , Germany 59 , and China 60 focus on cathode material development considering high-energy NCM (transition to low cobalt and high nickel content) and NCA based chemistries to be the likely next generation of LIBs for EVs in next decade, as we”
    Quote in the paperSubstantial claim0 of 3 sources checked
    • cites [58] Electrochemical energy storage technical team roadmap (USDRIVE, 2017). https://www.energy.gov/sites/prod/files/2017/11/f39/EESTT%20roadmap%202017-10-16%20Final.pdf.

      Not checked in the free run.

    • cites [25] Inventing the sustainable batteries of the future (BATTERY 2030+, 2020). https://battery2030.eu/digitalAssets/816/c_816048-l_1-k_roadmap-27-march.pdf.

      Not checked in the free run.

    • cites [59] Roadmap for an integrated cell and battery production in Germany (The Federal Government’s Joint Office for Electric Mobility, 2016). http://nationale-plattform-elektromobilitaet.de/fileadmin/user_upload/Redaktion/Publikationen/AG2_Roadmap_Zellfertigung_eng_bf.pdf.

      Not checked in the free run.

  • Classified as probably not a substantial claim. May combine two claims.

    Premisecitation

    Future battery chemistry developments after 2030 are uncertain, but conceivable battery chemistries include already existing LFP batteries, as well as high-capacity Li-metal solid state batteries, such as Li-S and Li-Air.

    “Future battery chemistry developments after 2030 are uncertain, but conceivable battery chemistries, in addition to NCM and NCA batteries, include already existing LFP batteries 21,62 , as well high-capacity Li-metal solid state batteries, such as Li-S and Li-Air 23,25 .”
    Quote in the paperSubstantial claim0 of 4 sources checked
    • cites [21] Tesla wins China approval to build Model 3 vehicles with LFP batteries: ministry (Reuters, 2020). https://www.reuters.com/article/us-tesla-china-electric-batteries/tesla-wins-china-approval-to-build-model-3-vehicles-with-lfp-batteries-ministry-idUSKBN23I0VT.

      Not checked in the free run.

    • cites [62] LFP chemistry is emerging as the future of batteries (Clean Future, 2020). http://www.cleanfuture.co.in/2020/07/09/lfp-chemistry-future-of-batteries/.

      Not checked in the free run.

    • cites [23] Cano, Z. P. et al. Batteries and fuel cells for emerging electric vehicle markets. Nat. Energy 3, 279–289 (2018). source

      Not checked in the free run.

    • cites [25] Inventing the sustainable batteries of the future (BATTERY 2030+, 2020). https://battery2030.eu/digitalAssets/816/c_816048-l_1-k_roadmap-27-march.pdf.

      Not checked in the free run.

  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    The real-world lifespan of batteries is influenced by additional factors not modelled here, such as ambient temperature, depth and rates of charge and discharge, and driving cycles.

    “The real-world lifespan of batteries is influenced by additional factors not modelled here, such as ambient temperature, depth and rates of charge and discharge, driving cycles 65 .”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [65] Comparison of plug-in hybrid electric vehicle battery life across geographies and drive-cycles (National Renewable Energy Lab, 2012). https://www.nrel.gov/docs/fy12osti/53817.pdf.

      Not checked in the free run.

  • Probably not a substantial claim: may not pass S2 (checkable), S4 (based).

    Interpretationnone given

    The success of the transition to electric vehicles will depend partly on whether material supply can keep up with sector growth in a sustainable way and without damaging the reputation of EVs.

    “The success of the transition to electric vehicles will depend partly on whether the material supply can keep up with the growth of the sector in a sustainable way and without damaging the reputation of EVs.”
    Quote in the paperNot a substantial claim

  • Classified as probably not a substantial claim.

    Study design and conductcitation

    The material layer models material compositions of battery chemistries using the BatPaC model.

    “The material layer models material compositions of battery chemistries using the BatPaC model”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [48] Nelson, P., Ahmed, S., Gallagher, K. & Dees, D. Modeling the Performance and Cost of Lithium-Ion Batteries for Electric-Drive Vehicles, Third Edition (Argonne National Lab, 2019). https://www.osti.gov/servlets/purl/1503280. source

      Not checked in the free run.

  • May combine two claims.

    Premisecitation

    Technical barriers exist (e.g., the performance of repurposed batteries) and economic uncertainty (the cost of repurposing including disassembly, testing, and repackaging) that depend on the battery chemistry, state-of-health, and the intended second-use application.

    “Technical barriers exist (e.g., the performance of repurposed batteries) and economic uncertainty (the cost of repurposing including disassembly, testing, and repackaging) that depend on the battery chemistry, state-of-health, and the intended second-use application 72,73 .”
    Quote in the paperSubstantial claim0 of 2 sources checked
    • cites [72] Ahmadi, L., Young, S. B., Fowler, M., Fraser, R. A. & Achachlouei, M. A. A cascaded life cycle: reuse of electric vehicle lithium-ion battery packs in energy storage systems. Int. J. Life Cycle Assess. 22, 111–124 (2017). source

      Not checked in the free run.

    • cites [73] Kamath, D., Arsenault, R., Kim, H. C. & Anctil, A. Economic and environmental feasibility of second-life lithium-ion batteries as fast-charging energy storage. Environ. Sci. Technol. 54, 6878–6887 (2020). source

      Not checked in the free run.

58 of 58

  • The paper relies on this without support.

    Recycling of end-of-life batteries provides a secondary supply of materials.

    “Recycling of EoL batteries provides a secondary supply of materials.”

  • The paper relies on this without support.

    Currently commercialized recycling technologies include pyrometallurgical and hydrometallurgical recycling, and direct recycling is under development for cathode-to-cathode recycling.

    “Currently commercialized recycling technologies include pyrometallurgical (pyro) and hydrometallurgical (hydro) recycling.Direct recycling is under development for cathode-to-cathode recycling.”

  • The paper relies on this without support.

    Lithium in the slag can be refined to produce battery-grade lithium compounds, but it is only economical when lithium price is high and recycling at scale.

    “The lithium in the slag can be refined to produce battery-grade lithium compounds, but it is only economical when lithium price is high and recycling at scale.”

  • The paper relies on this without support.

    Aluminum in the slag can technically be recovered, but it is not economical and not considered by pyro recycling companies.

    “Technically, aluminum in the slag can also be recovered, but it is not economical and not considered by pyro recycling companies (the slag may be used, e.g., as aggregate in construction material).”

  • The authors state this as an assumption.

    NCM batteries continue to decrease cobalt content and increase nickel content after 2030.

    “We assume that NCM batteries continue to decrease cobalt content and increase nickel content after 2030 and compile the NCX scenario (where X represents either Al or Mn) until 2050 (including eight chemistries, see Supplementary Table 14).”

  • The authors state this as an assumption.

    After 2020, batteries will have the same lifespan distributions as EVs and no replacement of batteries is required.

    “which is why we assume that after 2020 batteries will have the same lifespan distributions as EVs and no replacement of batteries is required (Supplementary Table 16).”

  • The authors state this as an assumption.

    The pack components of Li-S and Li-Air are based on the pack configurations of NCA chemistry (i.e., the same weight ratio between cell components and pack components).

    “The pack components of Li-S and Li-Air are assumed to be based on the pack configurations of NCA chemistry (i.e., the same weight ratio between cell components and pack components).”

  • The authors state this as an assumption.

    For NCX and LFP batteries, pyro, hydro, and direct recycling are used in the three recycling scenarios, respectively, while mechanical recycling is used for Li-S and Li-Air batteries in all three scenarios.

    “For NCX and LFP batteries, pyro, hydro, and direct recycling are assumed in the three recycling scenarios, respectively, while mechanical recycling is assumed for Li-S and Li-Air batteries in all three scenarios.”

  • The authors state this as an assumption.

    For mechanical recycling of Li-S and Li-Air batteries, only metallic lithium is recovered from the process.

    “As for mechanical recycling of Li-S and Li-Air batteries, we assume that only metallic lithium is recovered from the process.”

  • The paper relies on this without support.

    In reality not all materials go through all processing steps; for example, pyrometallurgical recycling still requires hydrometallurgical processing before cathode materials can be produced, while direct recycling is designed to recover cathode materials directly.

    “In reality not all materials go through all processing steps.For example, pyrometallurgical recycling (smelting) still requires hydrometallurgical processing (leaching) before cathode materials can be produced, while direct recycling is designed to recover cathode materials directly.”

  • The paper relies on this without support.

    In pyro- and hydrometallurgical recycling, the recovery of Li may not be economical, and in pyrometallurgical recycling graphite is incinerated and Al is not recovered from the slag.

    “In pyro-and hydrometallurgical recycling the recovery of Li may not be economical and in pyrometallurgical recycling graphite is incinerated and Al not recovered from the slag (see also methods).”
11 of 11

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Most analyses of battery production adopt a supply chain approach, focusing on the flow and transformation of materials from primary production via manufacturing to final assembly.

    “Most analyses of battery production adopt a supply chain approach, focussing on the flow and transformation of materials from primary production via manufacturing to final assembly, see e.g.[3,4,5], rather than a network of strategic interactions among economic and non-economic actors.”

    From Towards the lithium-ion battery production network: Thinking beyond mineral supply chains (2022) · cites this paper as [3]

  • Recycling has the potential to reduce 20%-23% of the demand for lithium by 2050, 26%-44% for cobalt, and 22%-38% for nickel.

    “For example, a previous study determined that recycling has the potential to reduce 20%-23% of the demand for lithium by 2050, 26%-44% for cobalt, and 22%-38% for nickel. 120”

    From Decarbonizing lithium-ion battery primary raw materials supply chain (2024) · cites this paper as [120]

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

Each contradiction between two passages listed here was confirmed by an independent check.

  • Same cited article has two publication years

    Minor

    References 30 and 70 give the same authors, title, journal, volume, and pages, but list its publication year as 2015 and 2017, respectively.

1 of 1

Cites

Flagged first, then by citations

Research works printed but not linked: 2

  1. 2019 Vehicle Technologies Office Annual Merit Review Report (U.S. Department of Energy, 2020). https://www.osti.gov/servlets/purl/1601333.
  2. Richa, K., Babbitt, C. W., Nenadic, N. G. & Gaustad, G. Environmental trade-offs across cascading lithium-ion battery life cycles. Int. J. Life Cycle Assess. 22, 66–81 (2017). · DOI · Paper page

Cited by

Sorted by citations

Related

Authors
Xu, C., Dai, Q., Gaines, L., Hu, M., Tukker, A., & Steubing, B.
Affiliations
  • Leiden University (NL)
  • Argonne National Laboratory (US)
Corresponding author
Steubing, Bernhard
ORCID
Venue
Communications Materials
Publisher
Springer Science and Business Media LLC
Published
2020-12-09
Volume
1
Issue
1
ISSN
2662-4443 (ISSN-L)
DOI
10.1038/s43246-020-00095-x
OpenAlex
W3112167541
Cited by
898
References
49
Citations by year
2026: 173 · 2025: 188 · 2024: 188 · 2023: 165 · 2022: 135 · 2021: 49
FWCI
42.91
Type
journal article
Language
en
Open access
Licence
Locations
  • Communications Materials (publishedVersion, cc-by)
  • Leiden Repository (Leiden University) (submittedVersion, cc-by)
  • OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Data Archiving and Networked Services (DANS) (submittedVersion, other-oa)
Funders
  • China Scholarship Council
  • EC | Horizon 2020 Framework Programme (18225)
Topics
  • Physical Sciences › Engineering › Mechanical Engineering › Extraction and Separation Processes
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Electric Vehicles and Infrastructure
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Advancements in Battery Materials
Keywords
electric vehicles, lithium-ion batteries, lithium, cobalt, nickel, NCM cathode, lithium iron phosphate, lithium-sulfur batteries, lithium-oxygen batteries, battery recycling, closed-loop recycling, second-life batteries, resource discovery, end-of-life batteries, material recovery

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Claims read by deepseek-v4.1-flash under definition version 3 (extract-v3) on 2026-10-10.

Classified by jev-1.13-20260917 (gold-guideline-v0.2) on 2026-10-10.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

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