Preparation and Properties of LiFePO₄ Cathode Material for Lithium Ion Power Battery

Abstract:

Carbon-doped LiFePO₄/C cathode materials for lithium power batteries were prepared by liquid-state precipitation reaction. Their properties were studied by using XRD, SEM, elemental analysis, FTIR and A.C. impedance tests. The results showed that the samples with olivine structure and 3.4V discharge platform. The tapped density of LiFePO₄/C sample could reach 1.42g/cm³, and it had an initiate capacity of 144.6mAh/g at 0.2C, and 93.2% of which remained after 20 cycles. The first discharge specific capacity is 133.5mAh/g at 10C and the capacity decreased 8.76% after 20 cycles.

• Periodical: Advanced Materials Research (Volumes 239-242)
• Pages: 302-305
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.239-242.302
• Online since: May 2011
• Authors: Jun Li, Yan Zhou, Yu Ying Zheng, Sheng He Tang, Da Guang Li
• Keywords: Cathode Material, High-Capacity, LiFePO₄/C, Lithium Ion Power Battery

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