期刊
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
卷 166, 期 12, 页码 A2453-A2458出版社
ELECTROCHEMICAL SOC INC
DOI: 10.1149/2.0321912jes
关键词
-
资金
- Natural Science Foundation of China [51604221, 51704222, 51372197, 51574288]
- Key Innovation Team of Shaanxi Province [2014KCT-04]
- Key Research and Development Program of Shaanxi Province [2017GY-133]
- Youth Science Foundation of Jiangxi Province [20171BAB216024]
Aseries of electrolytes based on ionic liquid (IL) N, N-diethyl-N-methyl-N-(2-methoxyethyl) ammonium bis(trifluoromethylsulfonyl) amide (DEMETFSI) and individual or binary co-solvent(s) consisting of 1,1,2,2-tetrafluoroethyl-2,2,3,3-tetrafluoropropyl ether (TTE) and/or 1,3-dioxolane (DOL) were investigated. The alterative solvent composition results in very different electrolyte properties (conductivity/viscosity, polysulfide solubility and film formation ability) and Li-S cell performances (specific capacity, cycle stability and rate capability). The hybrid system of DEMETFSI/TTE/DOL provides better overall performances compared to the IL with non-or single co-solvent, which is mainly profited from the synergistic function of TTE and DOL, together favorable for the improvement of ionic conduction of the electrolyte and Li surface chemistry. It is further emphasized that the construction of a rational counterbalance between polysulfide dissolution and shuttle suppression is more significant for the advanced Li-S batteries. (C) 2019 The Electrochemical Society.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据