Improved cycling performances of lithium sulfur batteries with LiNO3-modified electrolyte

被引：501

作者：

Liang, Xiao ^{[1
]}

Wen, Zhaoyin ^{[1
]}

Liu, Yu ^{[1
]}

Wu, Meifen ^{[1
]}

Jin, Jun ^{[1
]}

Zhang, Hao ^{[1
]}

Wu, Xiangwei ^{[1
]}

机构：

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

来源：

JOURNAL OF POWER SOURCES | 2011年 / 196卷 / 22期

关键词：

LiNO3 modified electrolyte; Protective film on lithium; Lithium sulfur battery; COMPOSITE CATHODE; CYCLEABILITY; ANODE; FILM;

D O I：

10.1016/j.jpowsour.2011.08.027

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

LiNO3 is selected as the additive to modify the electrolyte for lithium sulfur battery. The cycling efficiency (EFF) shows that LiNO3 additive is favorable for the lithium deposition and dissolution on the Cu foil. SEM and XPS are applied to analyze the surface changes of the lithium cycled in the electrolytes. The LiNO3 additive is conducive for the construction of protective film on the surface of the lithium anode. Lithium sulfur batteries are also cycled with the 0.4M LiNO3 modified electrolyte. The lithium sulfur battery tested shows improved cycling performance with the coulombic efficiency above 95% and highly stable reversible discharge capacity of ca. 527 mAh g(-1) after 50 cycles. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：9839 / 9843

页数：5

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