Overcharge protection effect and reaction mechanism of cyclohexylbenzene for lithium ion batteries

被引：32

作者：

Iwayasu, Norio ^{[1
]}

Honbou, Hidetoshi ^{[1
]}

Horiba, Tatsuo ^{[2
]}

机构：

[1] Hitachi Ltd, Hitachi Res Lab, Hitachi, Ibaraki 3191292, Japan

[2] Shin Kobe Elect Machinery Co Ltd, Fukaya, Saitama 3690267, Japan

来源：

JOURNAL OF POWER SOURCES | 2011年 / 196卷 / 08期

关键词：

Lithium ion batteries; Aromatic compounds; Cyclohexylbenzene; Overcharge protection agent; Field desorption mass spectrometry; REDOX SHUTTLES; CELLS;

D O I：

10.1016/j.jpowsour.2010.12.082

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：

We studied the relationship between the structure of aromatic compounds and the overcharge protection effect, using cyclohexylbenzene, isopropylbenzene, and toluene as the overcharge protection agents. Cyclohexylbenzene proved to be the most effective overcharge protection agent among these aromatic compounds. The effect is enhanced using a higher concentration of cyclohexylbenzene and elevated temperatures. The reaction product of cyclohexylbenzene was analyzed using field desorption mass spectrometry to elucidate its reaction mechanism. The results suggested that some of the overcharge reaction products of CHB were more reactive than that of IPB, which is consistent with the better suppressing effect on overcharging of the active material in the positive electrode. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：3881 / 3886

页数：6

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