Carbon Disulfide Cosolvent Electrolytes for High-Performance Lithium Sulfur Batteries

被引：45

作者：

Gu, Sui ^{[1
,2
,3
]}

Wen, Zhaoyin ^{[1
]}

Qian, Rong ^{[2
]}

Jin, Jun ^{[1
]}

Wang, Qingsong ^{[1
,3
]}

Wu, Meifen ^{[1
]}

Zhuo, Shangjun ^{[2
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Ceram, CAS Key Lab Mat Energy Convers, Shanghai 200050, Peoples R China

[2] Chinese Acad Sci, Shanghai Inst Ceram, Natl Ctr Inorgan Mass Spectrometry Shanghai, Shanghai 200050, Peoples R China

[3] Univ Chinese Acad Sci, Chinese Acad Sci, Shanghai 200050, Peoples R China

来源：

ACS APPLIED MATERIALS & INTERFACES | 2016年 / 8卷 / 50期

基金：

中国国家自然科学基金;

关键词：

carbon disulfide; electrolyte; additive; SEI; lithium sulfur battery; LI-S BATTERIES; SOLID-ELECTROLYTE; COMPOSITE; CATHODE; ION; XPS;

D O I：

10.1021/acsami.6b11619

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Development of lithium sulfur (Li-S) batteries with high Coulombic efficiency and long cycle stability remains challenging due to the dissolution and shuttle of polysulfides in electrolyte. Here, a novel additive, carbon disulfide (CS2), to the organic electrolyte is reported to improve the cycling performance of Li-S batteries. The cells with the CS2-additive electrolyte exhibit high Coulombic efficiency and long cycle stability, showing average Coulombic efficiency >99% and a capacity retention of 88% over the entire 300 cycles. The function of the CS2 additive is 2-fold: (1) it inhibits the migration of long-chain polysulfides to the anode by forming complexes with polysulfides and (2) it passivates electrode surfaces by inducing the protective coatings on both the anode and the cathode.

引用

页码：34379 / 34386

页数：8

共 38 条

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