Preparation and Characterization of LiVOPO4/C Composite Prepared by Solution Deposition-Pyrolysis Technique

Abstract

Abstract: LiVOPO₄/C composite was prepared by solution deposition-pyrolysis method using LiVOPO₄ and sucrose as raw materials.The microstructure,surface morphology and electrochemical properties were characterized by various electrochemical methods in combination with X-ray diffraction (XRD) and scanning electron microscope (SEM).It is found that the porous carbon layer is coated on the surface of LiVOPO₄ due to the pyrolysis of sucrose.The porous carbon can prevent the LiVOPO₄ particles from aggregation,increase the conductive area of electrode,decrease the polarization of cell and improve the electrochemical properties of LiVOPO₄ effectively.Compared with LiVOPO₄,the LiVOPO₄/C composite has increased reversible capacity,stabilized cycling performance.

Key words: LiVOPO₄, carbon, coating

XIONG Li-Zhi, LIANG Kai, HOU Hui, HE Ze-Qiang. Preparation and Characterization of LiVOPO₄/C Composite Prepared by Solution Deposition-Pyrolysis Technique[J]. journal6, 2010, 31(6): 86-89.

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Preparation and Characterization of LiVOPO₄/C Composite Prepared by Solution Deposition-Pyrolysis Technique

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