Lithium Iodide as a Promising Electrolyte Additive for Lithium-Sulfur Batteries: Mechanisms of Performance Enhancement

被引：287
|
作者：
Wu, Feixiang [1 ,2 ]
Lee, Jung Tae [1 ]
Nitta, Naoki [1 ]
Kim, Hyea [1 ,3 ]
Borodin, Oleg [4 ]
Yushin, Gleb [1 ]
机构：
[1] Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA
[2] Cent S Univ, Sch Met & Environm, Changsha 410083, Peoples R China
[3] Sila Nanotechnol Inc, Atlanta, GA 30332 USA
[4] Army Res Lab, Electrochem Branch, Adelphi, MD 20783 USA
来源：
ADVANCED MATERIALS | 2015年 / 27卷 / 01期
基金：
美国国家科学基金会;
关键词：
LI-S BATTERIES; POLY(ETHYLENE OXIDE); CATHODE MATERIALS; ION BATTERIES; COMPOSITE; GRAPHENE; DECOMPOSITION; TEMPERATURE; STABILITY; SPHERES;
D O I：
10.1002/adma.201404194
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
(Graph Presented). Lithium Iodide (LiI) is reported as a promising electrolyte additive for lithium-sulfur batteries. It induces formation of Li-ion-permeable protective coatings on both positive and negative electrodes, which prevent the dissolution of polysulfides on the cathode and reduction of polysulfides on the anode. In addition to enhancing the cell cycle stability, LiI addition also decreases the cell overpotential and voltage hysteresis. © 2014 Wiley-VCH Verlag GmbH & Co. KGaA.
引用
收藏
页码：101 / 108
页数：8
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