电解质
电化学
法拉第效率
阳极
碳酸盐
锂(药物)
二甲氧基乙烷
无机化学
乙醚
碳酸乙烯酯
碳酸二甲酯
材料科学
化学工程
金属
化学
二甲醚
金属锂
电极
有机化学
甲醇
物理化学
内分泌学
工程类
医学
作者
Junxiang Liu,Salvation Ihuaenyi,Robert Kuphal,Jessica Salinas,Lihua Xie,Li Yang,Umamaheswari Janakiraman,Mary E Fortier,Chengcheng Fang
出处
期刊:Journal of The Electrochemical Society
[The Electrochemical Society]
日期:2023-01-01
卷期号:170 (1): 010535-010535
被引量:15
标识
DOI:10.1149/1945-7111/acb3fe
摘要
Electrolytes play a critical role in enabling the stable cycling of rechargeable lithium (Li) metal batteries. While carbonate-based and ether-based electrolytes are widely investigated respectively with notably improved electrochemical performances in Li metal batteries, few works have been conducted for systematical understanding and comparison of these two systems. Here, we side-by-side investigated carbonate-based (dimethyl carbonate, DMC) and ether-based (1,2-dimethoxyethane, DME) electrolyte systems in terms of cathodic chemical/electrochemical stabilities, anodic stability, transport properties, Li morphology, Coulombic efficiency, and full cell performances. The experimental results indicate that ether-based electrolyte systems exhibit all-around superior compatibilities with Li metal anode, although the carbonate-based systems can be significantly improved from the commercial baseline by introducing fluorinated co-solvent. The ether-based systems, even at low concentrations, demonstrate acceptable anodic stability when charged to a reasonable cut-off voltage in practical applications. This work sheds light on advanced electrolyte development toward practical Li metal batteries.
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