Synthesis and Performance of Cathode Material Li3V2(PO4)3/C by Spray Drying and Carbothermal Method （SDATM）

doi:10.3724/SP.J.1077.2009.00349

Abstract

Abstract: Li-ion battery cathode material Li₃V₂(PO₄)₃/C composite was successfully prepared by spray drying and carbothermal method(SDCTM). The effect of spray drying was carefully studied. The structural, morphological and electrochemical properties were investigated by means of XRD, SEM, TEM and constant current chargedischarge cycling. The results indicate that the sample prepared with spray drying twice at 260℃ and subsequent heat-treating at 750℃ for 12h has better performance. Its average particle size is under 0.5μm.It presents large reversible discharge capacity of 121.9, 114.6 and 104.6mAh·g^-1 and excellent capacity retention rate closed to 100% after 50 cycles at C/5, 1C and 5C rate, respectively at the room temperature.

Key words: Li₃V₂(PO₄)₃/C, cathode material, spray drying, carbothermal method

CLC Number:

TM912

YU Feng,ZHANG Jing-Jie,YANG Yan-Feng,SONG Guang-Zhi. Synthesis and Performance of Cathode Material Li₃V₂(PO₄)₃/C by Spray Drying and Carbothermal Method （SDATM）[J]. Journal of Inorganic Materials, DOI: 10.3724/SP.J.1077.2009.00349.

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Synthesis and Performance of Cathode Material Li₃V₂(PO₄)₃/C by Spray Drying and Carbothermal Method （SDATM）

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