Preparation and Electrochemical Investigation of LiCoPO₄ Cathode Material for Lithium Ion Batteries

Abstract:

LiCoPO₄ was prepared by a citric acid assisted sol-gel method and exploited as cathode material for lithium ion batteries. TG curve showed the appropriate temperature of the reaction and X-ray diffraction patterns indicated that LiCoPO₄ synthesized at different temperatures was crystallized in an orthorhombic structure. During charge-discharge cycles, LiCoPO₄ presented a plateaus of 4.8V corresponding to Co³⁺/Co²⁺ redox couples, and a discharge capacity of 126.3 mAh/g in the first cycle. The CV curve of LiCoPO₄ showed that Li-ion diffusion in LiCoPO₄ obeyed a different mechanism between charge and discharge processes.

• Periodical: Advanced Materials Research (Volumes 455-456)
• Pages: 726-729
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.455-456.726
• Online since: January 2012
• Authors: Shao Liang Wang, Zhi Yuan Tang, Ou Sha, Ji Yan, Li Ma
• Keywords: LiCoPO₄, Lithium-Ion Battery, Sol-Gel Method

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