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Designing Advanced In Situ Electrode/Electrolyte Interphases for Wide Temperature Operation of 4.5 V Li||LiCoO 2 Batteries
Author(s) -
Ren Xiaodi,
Zhang Xianhui,
Shadike Zulipiya,
Zou Lianfeng,
Jia Hao,
Cao Xia,
Engelhard Mark H.,
Matthews Bethany E.,
Wang Chongmin,
Arey Bruce W.,
Yang XiaoQing,
Liu Jun,
Zhang JiGuang,
Xu Wu
Publication year - 2020
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.202004898
Subject(s) - materials science , electrolyte , cathode , anode , electrode , energy storage , lithium (medication) , electronics , voltage , lithium metal , high voltage , nanotechnology , optoelectronics , chemical engineering , electrical engineering , chemistry , medicine , power (physics) , physics , quantum mechanics , endocrinology , engineering
High‐energy‐density batteries with a LiCoO 2 (LCO) cathode are of significant importance to the energy‐storage market, especially for portable electronics. However, their development is greatly limited by the inferior performance under high voltages and challenging temperatures. Here, highly stable lithium (Li) metal batteries with LCO cathode, through the design of in situ formed, stable electrode/electrolyte interphases on both the Li anode and the LCO cathode, with an advanced electrolyte, are reported. The LCO cathode can deliver a high specific capacity of ≈190 mAh g −1 and show greatly improved cell performances under a high charge voltage of 4.5 V (even up to 4.55 V) and a wide temperature range from −30 to 55 °C. This work points out a promising approach for developing Li||LCO batteries for practical applications. This approach can also be used to improve the high‐voltage performance of other batteries in a broad temperature range.