Cited by 3,052CO2 Reduction Techniques and CatalystsCatalysts for Methane ReformingCarbon dioxide utilization in catalysis

What would it take for renewably powered electrosynthesis to displace petrochemical processes?

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De Luna, Phil, Hahn, Christopher, Higgins, Drew, Jaffer, Shaffiq A., Jaramillo, Thomas F., Sargent, Edward H.·2019·Science

Abstract

BACKGROUND: As the world continues to transition toward carbon emissions–free energy technologies, there remains a need to also reduce the carbon emissions of the chemical production industry. Today many of the world’s chemicals are produced from fossil fuel–derived feedstocks. Electrochemical conversion of carbon dioxide (CO 2 ) into chemical feedstocks offers a way to turn waste emissions into valuable products, closing the carbon loop. When coupled to renewable sources of electricity, these products can be made with a net negative carbon emissions footprint, helping to sequester CO 2 into usable goods. Research and development into electrocatalytic materials for CO 2 reduction has intensified in recent years, with advances in selectivity, efficiency, and reaction rate progressing toward practical implementation. A variety of chemical products can be made from CO 2 , such as alcohols, oxygenates, synthesis gas (syngas), and olefins—staples in the global chemical industry. Because these products are produced at substantial scale, a switch to renewably powered production could result in a substantial carbon emissions reduction impact. The advancement of electrochemical technology to convert electrons generated from renewable power into stable chemical form also represents one avenue to long-term (e.g., seasonal) storage of energy. ADVANCES: The science of electrocatalytic CO 2 reduction continues to progress, with priority given to the need to pinpoint more accurately the targets for practical application, the economics of chemical products, and barriers to market entry. It will be important to scale CO 2 electrolyzers and increase the stability of these catalysts to thousands of hours of continuous operation. Product separation and efficient recycling of CO 2 and electrolyte also need to be managed. The petrochemical industry operates at a massive scale with a complicated global supply chain and heavy capital costs. Commodity chemical markets are difficult to penetrate and are priced on feedstock, which is currently inexpensive as a result of the shale gas boom. CO 2 capture costs from the flue or direct air and product separation from unreacted CO 2 are also important to consider. Assuming that the advancement of electrocatalytic technologies continues apace, what will it take to disrupt the chemical production sector, and what will society gain by doing so? This review presents a technoeconomic and carbon emissions assessment of CO 2 products such as ethylene, ethanol, and carbon monoxide, offering target figures of merit for practical application. The price of electricity is by far the largest cost driver. Electrochemical production costs begin to match those of traditional fossil fuel–derived processes when electricity prices fall below 4 cents per kWh and energy conversion efficiencies reach at least 60%. When powered by renewable electricity, these products can be made with a net negative carbon emissions footprint. A comparative analysis of electrocatalytic, biocatalytic, and fossil fuel–derived chemical production shows that electrocatalytic production has the potential to yield the greatest reduction in carbon emissions, provided that a steady supply of clean electricity is available. Additionally, opportunities exist to combine electrochemical conversion of CO 2 with a range of other thermo- and biocatalytic processes to slowly electrify the existing petrochemical supply chain and further upgrade CO 2 into more useful chemicals. Technical challenges such as operating lifetime, energy efficiency, and product separation are discussed. Supply chain management of products and entrenched industrial petrochemical competition are also considered. OUTLOOK: There exists increasingly widespread recognition of the need to transition to carbon emissions–free means of chemical production. CO 2 pricing mechanisms are being developed and are seeing increased governmental support. The nascent carbon utilization economy is gaining traction, with startup companies, global prizes, and industrial research efforts all pursuing new carbon conversion technologies. Recent advances in electrochemical CO 2 reduction through the use of gas diffusion electrodes are pushing current densities and selectivities into a realm of industrial use. Despite this progress, there remain technical challenges that must be overcome for commercial application. Additionally, market barriers and cost economics will ultimately decide whether this technology experiences widespread implementation. Electrochemical CO 2 conversion.: Reduction of CO 2 using renewably sourced electricity could transform waste CO 2 emissions into commodity chemical feedstocks or fuels.

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  • In recent years, several wind and solar power auctions around the world have been won with prices below $0.03 kWh-1.

    “In recent years, several wind and solar power auctions around the world have been won with prices below 41 $0.03 kWh -1 .”

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    In “Pathways toward industrial implementation” (page not supplied), the paper reports recent onshore wind auctions in several countries with costs as low as $0.03/kWh. It does not report solar auctions at that price, and “as low as” $0.03/kWh does not establish prices below it. (LLM, conf=0.88)

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  1. [36]36. E. Kahler, $20M NRG COSIA Carbon XPRIZE finalists announced; teams ready to test transformative CO2 technologies at Alberta's carbon conversion centre | Canada's Oil Sands Innovation Alliance -COSIA. COSIA. Press Rele (2018), (available at https://www.cosia.ca/resources/news-releases/20m-nrg-cosia-carbon-xprize-finalists- announced-teams-ready-test).
  2. [50]50. M. Broeren, Production of Bio-ethylene. IEA-ETSAP IRENA© Technol. Br. 13, 9 (2013).
  3. [72]72. M. Melikoglu, V. Singh, S. Y. Leu, C. Webb, C. S. K. Lin, in Handbook of Biofuels Production: Processes and Technologies: Second Edition (2016), pp. 237-258.
  4. [105]105. U.S. Energy Information Administration, Electric Power Monthly: with data for May 2018, 1-222 (2018). 121. U. Energy Information Administration, "Annual Energy Outlook 2018 with Projections to 2050" (2018), , doi:10.2172/1019039. 122. IEA, Global Trends and Outlook for Hydrogen (2017) (available at http://ieahydrogen.org/pdfs/Global-Outlook-and-Trends-for- Hydrogen_Dec2017_WEB.aspx). 123. P. Luckow et al., 2015 Carbon Dioxide Price Forecast. Synap. Energy Econ. Inc., 1-39 (2015). · DOI

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Authors
De Luna, P., Hahn, C., Higgins, D., Jaffer, S. A., Jaramillo, T. F., & Sargent, E. H.
Affiliations
  • Department of Materials Science and Engineering, University of Toronto, Toronto, Ontario M5S 3E4, Canada.
  • SLAC National Accelerator Laboratory (US)
  • Total (United States) (US)
  • University of Toronto (CA)
Venue
Science
Published
2019-04-26
Volume
364
Issue
6438
ISSN
  • 0036-8075 (ISSN-L)
  • 1095-9203
OpenAlex
W2941803205
Cited by
3,052
References
117
Citations by year
2026: 425 · 2025: 552 · 2024: 594 · 2023: 462 · 2022: 405 · 2021: 356 · 2020: 206 · 2019: 52
FWCI
9.90
Type
journal article
Language
en
Open access
Locations
  • Science (publishedVersion)
  • PubMed (publishedVersion)
  • TSpace (University of Toronto) (submittedVersion)
  • OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) (submittedVersion)
Funders
U.S. Department of Energy (DE-SC0004993)
Topics
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › CO2 Reduction Techniques and Catalysts
  • Physical Sciences › Chemical Engineering › Catalysis › Catalysts for Methane Reforming
  • Physical Sciences › Chemical Engineering › Process Chemistry and Technology › Carbon dioxide utilization in catalysis
Keywords
electrochemical CO2 reduction, renewable electricity, carbon emission reduction, ethylene production, ethanol production, carbon monoxide production, techno-economic analysis, electricity prices, energy conversion efficiency, CO2 capture cost, catalyst stability, product separation, carbon capture and utilization, CO2 sequestration

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