Self-Propagating High Temperature Synthesis of LiCoO2 as Cathode Material for Lithium Ion Batteries

doi:10.3724/SP.J.1077.2008.00286

Abstract

Abstract: Lithium cobalt oxides (LiCoO₂) powders were synthesized by self-propagating high temperature synthesis using urea as fuel. XRD, SEM and electrochemical method were used to investigate the effects of mole ratio of urea to Co, mole ratio of Li to Co, combustion temperature, annealing temperature and the annealing time on the performance of LiCoO₂. The results show that self-propagating high temperature synthesis is beneficial to form the layer structure of LiCoO₂. The optimum condition is obtained as follows: molar ratio of urea to Co is 1:1, molar ratio of Li to Co is 1:1, combustion temperature and annealing temperature are 800℃ and annealing time is 2h, Under the optimum condition, the discharge capacity of LiCoO₂ is 155mAh/g, and its capacity retention is 95% after 10cycles.

Key words: lithium ion battery, cathode material, LiCoO₂, self-propagating high temperature synthesis

CLC Number:

TM912

WEN Yan-Xuan,XIAO Hui,GAN Yong-Le,SU Hai-Feng,WANG Fan. Self-Propagating High Temperature Synthesis of LiCoO₂ as Cathode Material for Lithium Ion Batteries[J]. Journal of Inorganic Materials, DOI: 10.3724/SP.J.1077.2008.00286.

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Self-Propagating High Temperature Synthesis of LiCoO₂ as Cathode Material for Lithium Ion Batteries

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