Radical or Not Radical: Revisiting Lithium-Sulfur Electrochemistry in Nonaqueous Electrolytes

被引：297

作者：

Cuisinier, Marine ^{[1
]}

Hart, Connor ^{[1
]}

Balasubramanian, Mahalingam ^{[2
]}

Garsuch, Arnd ^{[3
]}

Nazar, Linda F. ^{[1
]}

机构：

[1] Univ Waterloo, Dept Chem, Waterloo Inst Nanotechnol, 200 Univ Ave W, Waterloo, ON N2L 3G1, Canada

[2] Argonne Natl Lab, Xray Sci Div, Argonne, IL 60439 USA

[3] BASF SE, D-67056 Ludwigshafen, Germany

来源：

ADVANCED ENERGY MATERIALS | 2015年 / 5卷 / 16期

基金：

美国国家科学基金会;

关键词：

BATTERIES; REDUCTION; POLYSULFIDES; PERFORMANCE; REACTIVITY; STABILITY; LIFE; CELL;

D O I：

10.1002/aenm.201401801

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

Tracking down trisulfur radical in lithium-sulfur batteries is reported. In nonaqueous electrolytes, dissociation of polysulfide dianions to radicals, and particularly trisulfur S3·-, is believed to play a key role in the performance of lithium sulfur batteries. While S3·- exists in only minor concentration in glymes, exacerbated dissociation in donor solvents allows full utilization of both sulfur and lithium sulfide. © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

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