Carbon Disulfide Cosolvent Electrolytes for High-Performance Lithium Sulfur Batteries

被引：44
|
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
收藏
页码：34379 / 34386
页数：8
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