Ionic Liquid Enabled FeS2 for High-Energy-Density Lithium-Ion Batteries

被引：119

作者：

Evans, Tyler ^{[1
]}

Piper, Daniela Molina ^{[1
]}

Kim, Seul Cham ^{[2
]}

Han, Sang Sub ^{[2
]}

Bhat, Vinay ^{[3
]}

Oh, Kyu Hwan ^{[2
]}

Lee, Se-Hee ^{[1
]}

机构：

[1] Univ Colorado, Dept Mech Engn, Boulder, CO 80309 USA

[2] Seoul Natl Univ, Dept Mat Sci & Engn, Seoul 151742, South Korea

[3] Boulder Ion Corp, Arvada, CO 80007 USA

来源：

ADVANCED MATERIALS | 2014年 / 26卷 / 43期

基金：

美国国家科学基金会;

关键词：

SULFUR BATTERIES; CATHODE MATERIALS; ELECTROLYTES; PERFORMANCE; ANODES; CELLS; ELECTROCHEMISTRY; MECHANISMS; SOLVENT; SYSTEM;

D O I：

10.1002/adma.201402103

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

High-energy-density FeS2 cathodes enabled by a bis(trifluoromethanesulfonyl)imide (TFSI-) anion-based room temperature ionic liquid (RTIL) electrolyte are demonstrated. A TFSI-based ionic liquid (IL) significantly mitigates polysulfide dissolution, and therefore the parasitic redox shuttle mechanism, that plagues sulfur-based electrode chemistries. FeS2 stabilization with a TFSI--based IL results in one of the highest energy density cathodes, 542 W h kg(-1) (normalized to cathode composite mass), reported to date.

引用

收藏

页码：7386 / 7392

页数：7

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