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

Geder, Jan and Hoster, Harry E. and Jossen, Andreas and Garche, Juergen and Yu, Denis Y. W. (2014) Impact of active material surface area on thermal stability of LiCoO2 cathode. Journal of Power Sources, 257. pp. 286-292. ISSN 0378-7753

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Abstract

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.

Item Type:
Journal Article
Journal or Publication Title:
Journal of Power Sources
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2100/2105
Subjects:
ID Code:
72628
Deposited By:
Deposited On:
27 Jan 2015 09:51
Refereed?:
Yes
Published?:
Published
Last Modified:
01 Jul 2020 01:57