Study of Circulation of Reaction Liquid in Liquid Phase Synthesis of LiFePO4 as Cathode Material

Abstract:

LiFePO4 as cathode materials for lithium-ion battery were prepared by a liquid-phase method which utilizes FeSO4•7H2O, NH4H2PO4, H2O2, CH3COOLi and glucose as raw materials. The aqueous can be directly used in the synthesis of FePO4•xH2O without any treatment and the ethanol should be distilled before the synthesis of LiFePO4. The result showed that the high purity of FePO4•xH2O can be achieved even prepared with the aqueous which was used for five times. LiFePO4 cathode material prepared with the distilled ethanol exhibited the best initial discharge capacity of 156.3 mAh•g-1 and the capacity retention ratio 99.49% after 30 cycles at 0.1 C rate.

• Periodical: Advanced Materials Research (Volumes 1120-1121)
• Pages: 128-131
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1120-1121.128
• Online since: July 2015
• Authors: Jun Jun Ma, Jia Zhou, Xue Min Zu, Xing Yao Wang*
• Keywords: LiFePO4, Liquid-Phase Method, Lithium-Ion Batteries

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