Impact of active material surface area on thermal stability of LiCoO 2 cathode

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Jan Geder
  • Harry E. Hoster
  • Andreas Jossen
  • Jürgen Garche
  • Denis Y.W. Yu

Related Research Unit(s)

Detail(s)

Original languageEnglish
Pages (from-to)286-292
Journal / PublicationJournal of Power Sources
Volume257
Online published10 Feb 2014
Publication statusPublished - 1 Jul 2014

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. © 2014 Elsevier B.V. All rights reserved.

Research Area(s)

  • Cathode, LiCoO2, Lithium-ion battery, Thermal analysis, Thermal stability

Citation Format(s)

Impact of active material surface area on thermal stability of LiCoO 2 cathode. / Geder, Jan; Hoster, Harry E.; Jossen, Andreas; Garche, Jürgen; Yu, Denis Y.W.

In: Journal of Power Sources, Vol. 257, 01.07.2014, p. 286-292.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review