Bis(2,2,2-trifluoroethyl) Ether As an Electrolyte Co-solvent for Mitigating Self-Discharge in Lithium-Sulfur Batteries

被引：148

作者：

Gordin, Mikhail L. ^{[1
]}

Dai, Fang ^{[1
]}

Chen, Shuru ^{[1
]}

Xu, Terrence ^{[1
]}

Song, Jiangxuan ^{[1
]}

Tang, Duihai ^{[1
]}

Azimi, Nasim ^{[2
]}

Zhang, Zhengcheng ^{[2
]}

Wang, Donghai ^{[1
]}

机构：

[1] Penn State Univ, Dept Mech & Nucl Engn, University Pk, PA 16802 USA

[2] Argonne Natl Lab, Chem Sci & Engn Div, Lemont, IL 60439 USA

来源：

ACS APPLIED MATERIALS & INTERFACES | 2014年 / 6卷 / 11期

关键词：

lithium-sulfur batteries; self-discharge; fluorinated ether; electrolyte; polysulfide shuttle; solid-electrolyte interphase; FLUOROETHYLENE CARBONATE; FUNDAMENTAL CHEMISTRY; PERFORMANCE;

D O I：

10.1021/am501665s

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

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.

引用

页码：8006 / 8010

页数：5

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