Effects of cell positive cans and separators on the performance of high-voltage Li-ion batteries

被引：44

作者：

Chen, Xilin ^{[1
]}

Xu, Wu ^{[1
]}

Xiao, Jie ^{[1
]}

Engelhard, Mark H. ^{[1
]}

Ding, Fei ^{[1
,2
]}

Mei, Donghai ^{[1
]}

Hu, Dehong ^{[1
]}

Zhang, Jian ^{[1
]}

Zhang, Ji-Guang ^{[1
]}

机构：

[1] Pacific NW Natl Lab, Richland, WA 99354 USA

[2] Tianjin Inst Power Sources, Natl Key Lab Power Sources, Tianjin 300381, Peoples R China

来源：

JOURNAL OF POWER SOURCES | 2012年 / 213卷

关键词：

Lithium-ion battery; High-voltage cathode; Positive can; Separator; Efficiency; Cycling stability; ELECTROCHEMICAL PERFORMANCE; LINI0.5MN1.5O4; SPINEL; ELECTRODE; FTIR; POLYETHYLENE; CATHODES; XPS; NI;

D O I：

10.1016/j.jpowsour.2012.04.009

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：

The effects of different cell positive cans and separators on first-cycle Coulombic efficiency and long-term cycling stability of a high-voltage spinel cathode are investigated systematically. Compared to stainless steel (SS) positive cans, aluminum (Al)-clad SS-316 positive cans are much more resistant to oxidation at high voltages; therefore, the initial Coulombic efficiency of the batteries with Al-clad can is improved by more than 13%. Among the five separators studied in this work, the polyethylene (PE) separator exhibits the best electrochemical stability. The cells using LiCr0.05Ni0.45Mn1.5O4 as the cathode, an Al-clad positive can, and a PE separator exhibits a first-cycle Coulombic efficiency of about 90% and a capacity fading of only 0.01% per cycle. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：160 / 168

页数：9

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