Bis(2,2,2-trifluoroethyl) Ether As an Electrolyte Co-solvent for Mitigating Self-Discharge in Lithium–Sulfur Batteries
ACS Applied Materials & Interfaces2014Vol. 6(11), pp. 8006–8010
Citations Over TimeTop 10% of 2014 papers
Mikhail L. Gordin, Fang Dai, Shuru Chen, Terrence Xu, Jiangxuan Song, Duihai Tang, Nasim Azimi, Zhengcheng Zhang, Donghai Wang
Abstract
Lithium-sulfur batteries suffer from severe self-discharge because of polysulfide dissolution and side reaction. In this work, a novel electrolyte containing bis(2,2,2-trifluoroethyl) ether (BTFE) was used to mitigate self-discharge of Li-S cells having both low- and high-sulfur-loading sulfur cathodes. This electrolyte meaningfully decreased self-discharge at elevated temperature, though differences in behavior of cells with high- and low-sulfur-loading were also noted. Further investigation showed that this effect likely stems from the formation of a more robust protective film on the anode surface.
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