In:
Angewandte Chemie, Wiley, Vol. 135, No. 9 ( 2023-02-20)
Abstract:
The use of non‐solvating, or as‐called sparingly‐solvating, electrolytes (NSEs), is regarded as one of the most promising solutions to the obstacles to the practical applications of Li−S batteries. However, it remains a puzzle that long‐life Li−S batteries have rarely, if not never, been reported with NSEs, despite their good compatibility with Li anode. Here, we find the capacity decay of Li−S batteries in NSEs is mainly due to the accumulation of the dead Li 2 S at the cathode side, rather than the degradation of the anodes or electrolytes. Based on this understanding, we propose an electrochemical strategy to reactivate the accumulated Li 2 S and revive the dead Li−S batteries in NSEs. With such a facile approach, Li−S batteries with significantly improved cycling stability and accelerated dynamics are achieved with diglyme‐, acetonitrile‐ and 1,2‐dimethoxyethane‐based NSEs. Our finding may rebuild the confidence in exploiting non‐solvating Li−S batteries with practical competitiveness.
Type of Medium:
Online Resource
ISSN:
0044-8249
,
1521-3757
DOI:
10.1002/ange.202218803
Language:
English
Publisher:
Wiley
Publication Date:
2023
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