期刊
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
卷 166, 期 12, 页码 A2570-A2573出版社
ELECTROCHEMICAL SOC INC
DOI: 10.1149/2.0921912jes
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资金
- Joint Center for Energy Storage Research, an Energy Innovation Hub - U.S. Department of Energy, Office of Science, Basic Energy Sciences
- Argonne, a U.S. Department of Energy Office of Science laboratory [DE-AC02-06CH11357]
The use of concentrated electrolytes in batteries has been impeded in part by the lack of compatible electrolyte additives for protection of electrodes. Herein, a lipophilic additive tetrabutylammonium iodide (TBAI = [Bu4N]I) was introduced to concentrated electrolyte (CH3CN)(2)LiTFSI/TTE (TTE = 1,1,2,2-tetrafluoroethyl 2,2,3,3-tetrafluoropropyl ether) for Li-S batteries. Electrochemical and SEM/EDS analyses showed that the additive provided short-term capacity retention via removal of S deposits by in situ generated I-2. These results strongly suggest lipophilic salts as viable candidates for additives in concentrated electrolytes. (c) 2019 The Electrochemical Society.
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