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

doi:10.1039/d0cc02481c

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

Chemistry (Twin Cities)

Research output: Contribution to journal › Article › peer-review

21 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.

Original language	English (US)
Pages (from-to)	8257-8260
Number of pages	4
Journal	Chemical Communications
Volume	56
Issue number	59
DOIs	https://doi.org/10.1039/d0cc02481c
State	Published - Jul 28 2020

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© 2020 The Royal Society of Chemistry.

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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.",

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AU - Yuan, Shouyi

AU - Bao, Junwei Lucas

AU - Wang, Nan

AU - Zhang, Xiang

AU - Wang, Yonggang

AU - Truhlar, Donald G.

AU - Xia, Yongyao

PY - 2020/7/28

Y1 - 2020/7/28

N2 - 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.

AB - 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.

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JO - Chemical Communications

JF - Chemical Communications

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ER -

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

Abstract

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