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Cited by 514Advancements in Battery MaterialsAdvanced Battery Materials and TechnologiesBattery Modeling and Management

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Identifying the components of the solid–electrolyte interphase in Li-ion batteries

Wang, Luning, Menakath, Anjali, Han, Fudong, Wang, Yi, Zavalij, Peter Y., Gaskell, Karen J., Borodin, Oleg, Iuga, Dinu, Brown, Steven P., Wang, Chunsheng, Xu, Kang, Eichhorn, Bryan W.·2019·Nature Chemistry
DOI 10.1038/s41557-019-0304-z
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Abstract

The importance of the solid-electrolyte interphase (SEI) for reversible operation of Li-ion batteries has been well established, but the understanding of its chemistry remains incomplete. The current consensus on the identity of the major organic SEI component is that it consists of lithium ethylene di-carbonate (LEDC), which is thought to have high Li-ion conductivity, but low electronic conductivity (to protect the Li/C electrode). Here, we report on the synthesis and structural and spectroscopic characterizations of authentic LEDC and lithium ethylene mono-carbonate (LEMC). Direct comparisons of the SEI grown on graphite anodes suggest that LEMC, instead of LEDC, is likely to be the major SEI component. Single-crystal X-ray diffraction studies on LEMC and lithium methyl carbonate (LMC) reveal unusual layered structures and Li+ coordination environments. LEMC has Li+ conductivities of >1 × 10-6 S cm-1, while LEDC is almost an ionic insulator. The complex interconversions and equilibria of LMC, LEMC and LEDC in dimethyl sulfoxide solutions are also investigated.

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Authors
Wang, L., Menakath, A., Han, F., Wang, Y., Zavalij, P. Y., Gaskell, K. J., Borodin, O., Iuga, D., Brown, S. P., Wang, C., Xu, K., & Eichhorn, B. W.
Affiliations
  • University of Maryland, College Park (US)
  • University of Warwick (GB)
  • DEVCOM Army Research Laboratory (US)
Corresponding author
  • Wang, Chunsheng
  • Xu, Kang
  • Eichhorn, Bryan W.
ORCID
Venue
Nature Chemistry
Publisher
Springer Science and Business Media LLC
Published
2019-08-19
Volume
11
Issue
9
Pages
789-796
ISSN
  • 1755-4330 (ISSN-L)
  • 1755-4349
DOI
10.1038/s41557-019-0304-z
OpenAlex
W2967719016
Cited by
514
References
0
Citations by year
2026: 41 · 2025: 73 · 2024: 78 · 2023: 100 · 2022: 74 · 2021: 76 · 2020: 64 · 2019: 8
FWCI
19.96
Type
journal article
Language
en
Open access
closed
Licence
Locations
  • Nature Chemistry (publishedVersion)
  • PubMed (publishedVersion)
  • Warwick Research Archive Portal (University of Warwick) (acceptedVersion)
Topics
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Advancements in Battery Materials
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Advanced Battery Materials and Technologies
  • Physical Sciences › Engineering › Automotive Engineering › Battery Modeling and Management
Keywords
solid electrolyte interphase, lithium-ion batteries, graphite anode, lithium ion conductivity, ionic insulators, layered structure, lithium coordination, SEI composition, electrolyte decomposition

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