Influence of Sintering Conditions on Performances of LiFePO<sub>4</sub>/C Cathode Material Obtained by Hydrothermal Stripping Method

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Abstract

In order to synthesize lithium-ion battery cathode material LiFePO₄/C, a hydrothermal stripping method was designed to synthesize LiFePO₄/C cathode materials. The influences of sintering temperatures and time on the structure, morphology and electrochemical performances of LiFePO₄/C were investigated. The structure and morphology of samples were characterized using powder X-ray diffraction (XRD), scanning electron microscopy (SEM). The electrochemical performances were conducted by galvanostatic charge/discharge test and cyclic voltammetry (CV). The electrochemical results show that LiFePO₄ sintered at 650℃ for 4 h exhibits good electrochemical performance. The LiFePO₄/C sample presents the discharge capacity of 151.7 mAh·g^-1,154.8 mAh·g^-1, 149.8 mAh·g^-1 and 139.1 mAh·g^-1 at 0.1 C, 0.2 C, 0.5 C and 1 C, respectively. In addition, the LiFePO₄/C also shows excellent capacity retention and cycle performances.

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	Articles by authors
	Zu Xuemin
	Li Dandan
	Chen Li
	Wang Xingyao

Keywords： lithium-ion battery； cathode material； LiFePO₄/C； hydrothermal stripping method； electrochemical performance

Received 2016-01-07;

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Cite this article:

Zu Xuemin, Li Dandan, Chen Li, Wang Xingyao.Influence of Sintering Conditions on Performances of LiFePO₄/C Cathode Material Obtained by Hydrothermal Stripping Method[J] Chemcial Industry and Engineering, 2017,V34(6): 6-10

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