Impact of active material surface area on thermal stability of LiCoO2 cathode

被引：66

作者：

Geder, Jan ^{[1
]}

Hoster, Harry E. ^{[1
]}

Jossen, Andreas ^{[2
]}

Garche, Juergen ^{[3
]}

Yu, Denis Y. W. ^{[1
,4
]}

机构：

[1] TUM CREATE Ltd, Singapore, Singapore

[2] Tech Univ Munich, Inst Elect Energy Storage Technol, D-80290 Munich, Germany

[3] Fuel Cell & Battery Consulting FCBAT, Ulm, Germany

[4] City Univ Hong Kong, Sch Energy & Environm, Hong Kong, Hong Kong, Peoples R China

来源：

JOURNAL OF POWER SOURCES | 2014年 / 257卷

基金：

新加坡国家研究基金会;

关键词：

Lithium-ion battery; Cathode; LiCoO2; Thermal stability; Thermal analysis; LITHIUM BATTERIES; SIZE;

D O I：

10.1016/j.jpowsour.2014.01.116

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：

Thermal stability of charged LiCoO2 cathodes with various surface areas of active material is investigated in order to quantify the effect of LiCoO2 surface area on thermal stability of cathode. Thermogravimetric analyses and calorimetry have been conducted on charged cathodes with different active material surface areas. Besides reduced thermal stability, high surface area also changes the active material decomposition reaction and induces side reactions with additives. Thermal analyses of LiCoO2 delithiated chemically without any additives or with a single additive have been conducted to elaborate the effect of particle size on side reactions. Stability of cathode electrolyte system has been investigated by accelerating rate calorimetry (ARC). Arrhenius activation energy of cathode decomposition has been calculated as function of conversion at different surface area of active material, (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：286 / 292

页数：7

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