Bis(2,2,2-trifluoroethyl) ether as an electrolyte co-solvent for mitigating self-discharge in lithium - Sulfur batteries

Mikhail L. Gordin, Fang Dai, Shuru Chen, Terrence Xu, Jiangxuan Song, Duihai Tang, Nasim Azimi, Zhengcheng Zhang, Donghai Wang

Research output: Contribution to journalArticlepeer-review

109 Scopus citations

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.

Original languageEnglish (US)
Pages (from-to)8006-8010
Number of pages5
JournalACS Applied Materials and Interfaces
Volume6
Issue number11
DOIs
StatePublished - Jun 11 2014

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

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