Electrochemical Properties of LiFePO4/C Composite by Spray-Drying Method

Yi Jie Gu; Fei Xiang Hao; Yun Bo Chen; Hong Quan Liu; Yan Min Wang; Peng Liu; Qing Gang Zhang; Shu Qi Li

doi:10.4028/www.scientific.net/AMR.643.96

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 643Electrochemical Properties of LiFePO4/C Composite...

Electrochemical Properties of LiFePO₄/C Composite by Spray-Drying Method

Abstract:

LiFePO₄/C composite cathode materials were synthesized by spray-drying method using LiH₂PO₄ and Fe₂O₃ as raw materials and amylum as conductive additive and reducing agent. The microstructure of the samples was characterized by X-ray diffraction; charge/discharge cycling performance and electrochemical impedance spectroscopy (EIS) were used to characterize their electrochemical properties. X-ray diffraction result showed that LiFePO₄/C composite has an order olivine structure with space group of Pnma. The charge/discharge tests showed that the cathode material has a high discharge capacity of 140.8mAh/g after 5 cycles at 0.1C rate. And after 100 cycles at 1C rate, the discharge capacity is 108.4mAh/g.

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Periodical:

Advanced Materials Research (Volume 643)

Pages:

96-99

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.643.96

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Online since:

January 2013

Authors:

Yi Jie Gu, Fei Xiang Hao, Yun Bo Chen, Hong Quan Liu, Yan Min Wang, Peng Liu, Qing Gang Zhang, Shu Qi Li

Keywords:

Cycling Performance, Electrochemical Impedance Spectroscopy (EIS), LiFePO₄, Lithium-Ion Battery

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