Salt-rich solid electrolyte interphase for safer high-energy-density Li metal batteries with limited Li excess

Shouyi Yuan, Junwei Lucas Bao, Nan Wang, Xiang Zhang, Yonggang Wang, Donald G. Truhlar, Yongyao Xia

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1 Scopus citations

Abstract

We propose a carbonate-based electrolyte optimized with dual cations and ionic liquid for high-efficiency Li metal batteries with a high-voltage cathode. An average coulombic efficiency of Li deposition of 99.6% is achieved due to the salt-rich solid electrolyte interphase and Na guided uniform Li plating. The Li||NCM811 cells can be cycled with limited Li (N/P = 1) over 90 cycles. An additional advantage is that it improves the thermal stability of the NCM811 cathode. This journal is

Original languageEnglish (US)
Pages (from-to)8257-8260
Number of pages4
JournalChemical Communications
Volume56
Issue number59
DOIs
StatePublished - Jul 28 2020

Bibliographical note

Funding Information:
We acknowledge the funding from the National Natural Science Foundation of China (No. 21875045), National Key Research and Development Program of China (2016YFB0901500), the Shanghai Science & Technology Committee (19DZ2270100) and the U.S. Department of Energy, Office of Basic Energy Sciences (DE-FG02-17ER16362).

Publisher Copyright:
© 2020 The Royal Society of Chemistry.

PubMed: MeSH publication types

  • Journal Article

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