A New Method for the Synthesis of LiFePO4/C

doi:10.3724/SP.J.1095.2010.00185

Chinese Journal of Applied Chemistry ›› 2010, Vol. 27 ›› Issue (11): 1356-1358.DOI: 10.3724/SP.J.1095.2010.00185

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A New Method for the Synthesis of LiFePO4/C

ZHANG Jing-Wen^1,2, ZHANG Lei-Lei^1,2, WU Chao-Yong^1,2, ZHANG Xin-Bo¹, WANG Li-Min^1*

(1.State Key Laboratory of Rare Earth Resource Utilization,Changchun Institute of
Applied Chemistry,Chinese Academy of Sciences,Changchun 130022;
2.Graduate University of the Chinese Academy of Sciences,Beijing)

Received:2010-03-31 Revised:2010-04-19 Published:2010-11-10 Online:2010-11-10

Abstract

Abstract:

With Fe(NO3)3·9H2O, LiNO3, NH4H2PO4 and sucrose as raw materials, LiFePO4/C was synthesized by using supercritical carbon dioxide at 50 ℃ for 24 h, and then being annealed at 350 ℃ and 600 ℃. The particle size of synthesized LiFePO4/C is in the range of 0.5~1.0 μm. For the electrochemical performance of LiFePO4/C as the cathode material of lithium ion battery, the initial discharge capacity is 156.6 mA·h/g, and there is no obvious capacity fading after 50 cycles.

Key words: lithium iron phosphate, supercritical carbon dioxide, lithium ion battery, cathode material

CLC Number:

O646.5

ZHANG Jing-Wen1,2, ZHANG Lei-Lei1,2, WU Chao-Yong1,2, ZHANG Xin-Bo1, WANG Li-Min1*. A New Method for the Synthesis of LiFePO4/C[J]. Chinese Journal of Applied Chemistry, 2010, 27(11): 1356-1358.

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A New Method for the Synthesis of LiFePO4/C

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