The Effect of Lithium Source on the Electrochemical Performance of LiFePO4/C Cathode Materials Synthesized by Sol-Gel Method

Zhi Qiang Hu; Dong Xue Yang; Ke Jian Yin; Jing Xiao Liu; Fei Li; Wen Yuan Gao; Ying Qin; Hua Liu

doi:10.4028/www.scientific.net/AMR.669.311

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 669The Effect of Lithium Source on the...

The Effect of Lithium Source on the Electrochemical Performance of LiFePO₄/C Cathode Materials Synthesized by Sol-Gel Method

Abstract:

LiFePO₄/C cathode materials were synthesized by Sol-gel method under the same process conditions using different water-soluble lithium source (LiOH, Li₂CO₃, LiNO₃). The phase of synthesized powders were characterized by XRD; and the electrochemical performance of the material was investigated by measurements of cyclic voltammetry, AC impedance measurements, charge and discharge. The results show that the synthesized LiFePO₄/C using LiOH as the lithium source has high electrochemical reversibility and low internal impedance. The specific discharge capacity is 147.5mAh/g under the discharge at 0.2C rate. It also has high stability of cycle capacity, and almost no attenuation after 30 cycles. So it has the excellent electrochemical performance.

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Periodical:

Advanced Materials Research (Volume 669)

Pages:

311-315

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.669.311

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Online since:

March 2013

Authors:

Zhi Qiang Hu, Dong Xue Yang, Ke Jian Yin, Jing Xiao Liu, Fei Li, Wen Yuan Gao, Ying Qin, Hua Liu

Keywords:

Cathode Material, Lithium Iron Phosphate, Lithium Source, Sol-Gel Method

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