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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 12    No. 1    February 2002

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Synthesis and thermal decomposition 
kinetics of LiNiO2
TIAN Yan-wen(田彦文),LI Hui(李  辉),ZHANG Xin(张  新),
ZHAI Yu-chun(瞿玉春),GAO Hong(高  虹)

School of Materials and Metallurgy,Northeastern University,
Shenyang 110004,China

Abstract:A layered LiNiO2 with high crystallinity was synthesized by sintering the finely prepared mixture of lithium hydroxide and nickel hydroxide in the oxygen atmosphere. The electro-chemical properties of LiNiO2 show that it has a reversible capacity of more than 168mA·h·g-1.It was found that with increasing temperature,LiNiO2 decomposed in air followed with three reaction stages, the apparent activation energies were 747.18±1.0kJ·mol-1,932.46±1.0kJ·mol-1 and 1126.97 ±1.0kJ·mol-1 respectively,and the kinetic equations of the three reaction stages were obtained.

 

Key words: lithiumion batteries;LiNiO2;electrochemistry;decomposition;kinetics

ISSN 1672-7029
CN 43-1423/U

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