An Effective Approach To Protect Lithium Anode and Improve Cycle Performance for Li-S Batteries

被引：151

作者：

Wu, Feng ^{[1
,2
]}

Qian, Ji ^{[1
]}

Chen, Renjie ^{[1
,2
]}

Lu, Jun ^{[3
]}

Li, Li ^{[1
,2
]}

Wu, Huiming ^{[3
]}

Chen, Junzheng ^{[1
]}

Zhao, Teng ^{[1
]}

Ye, Yusheng ^{[1
]}

Amine, Khalil ^{[3
]}

机构：

[1] Beijing Inst Technol, Sch Chem Engn & Environm, Beijing Key Lab Environm Sci & Engn, Beijing 100081, Peoples R China

[2] Natl Dev Ctr High Technol Green Mat, Beijing 100081, Peoples R China

[3] Argonne Natl Lab, Chem Sci & Engn Div, Lemont, IL 60440 USA

来源：

ACS APPLIED MATERIALS & INTERFACES | 2014年 / 6卷 / 17期

基金：

美国国家科学基金会;

关键词：

lithium-sulfur batteries; lithium anode; electrolyte; LIODFB; passivation layer; electrochemistry; ELECTROCHEMICAL PROPERTIES; SULFUR BATTERY; ELECTROLYTE; CATHODE; SALT; NANOTUBES; DISCHARGE; CAPACITY; ETHER; LINO3;

D O I：

10.1021/am504345s

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Lithium oxalyldifluoroborate (LiODFB) has been investigated as an organic electrolyte additive to improve the cycling performance of LiS batteries. Cell test results demonstrate that an appropriate amount of LiODFB added into the electrolyte leads to a high Coulombic efficiency. Analyses by energy dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, and the density functional theory showed that LiODFB promotes the formation of a LiF-rich passivation layer on the lithium metal surface, which not only blocks the polysulfide shuttle, but also stabilizes the lithium surface.

引用

页码：15542 / 15549

页数：8

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