Issue 59, 2020

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

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.

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

Supplementary files

Article information

Article type
Communication
Submitted
06 Apr 2020
Accepted
13 Jun 2020
First published
15 Jun 2020

Chem. Commun., 2020,56, 8257-8260

Author version available

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

S. Yuan, J. L. Bao, N. Wang, X. Zhang, Y. Wang, D. G. Truhlar and Y. Xia, Chem. Commun., 2020, 56, 8257 DOI: 10.1039/D0CC02481C

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