LiFePO4/C Nanocomposites Synthesized from Fe2O3 by a Hydrothermal Reaction-calcination Process and Their Electrochemical Performance

doi:10.3724/SP.J.1077.2012.12143

Journal of Inorganic Materials ›› 2012, Vol. 27 ›› Issue (9): 997-1002.DOI: 10.3724/SP.J.1077.2012.12143

• Research Letter • Previous Articles Next Articles

LiFePO₄/C Nanocomposites Synthesized from Fe₂O₃ by a Hydrothermal Reaction-calcination Process and Their Electrochemical Performance

DENG Hong-Gui¹, JIN Shuang-Ling¹, HE Xing², ZHAN Liang¹, QIAO Wen-Ming¹, LING Li-Cheng¹

(1. State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China; 2. School of Materials Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China)

Received:2012-03-07 Revised:2012-05-07 Published:2012-09-20 Online:2012-08-28
About author:DENG Hong-Gui (1984–), male, PhD. E-mail: hongguideng@gmail.com
Supported by:
National Natural Science Foundation of China (51002051); Fundamental Research Funds for the Central Universities (WA1014016); Science and Technology Commission of Shanghai Municipality (09520500900)

Abstract

Abstract: LiFePO₄ nanoparticles coated with a carbon layer were synthesized by a hydrothermal reaction-calcination process, using Fe₂O₃as an iron source and ascorbic acid as carbon source. The amount of ascorbic acid have an effect on the structure, phase and carbon amount of the final product. With 1 g ascorbic acid used in the reaction, the particle sizes of synthesized LiFePO₄/C nanocomposites are in a range of 220–280 nm. Using as the cathode materials for the lithium-ion batteries, the as-prepared material shows high capacity and good cycle stability (159 mAh/g at 0.1C over 500 cycles), as well as good rate capability.

Key words: lithium ion battery, lithium iron phosphate, Fe₂O₃, hydrothermal method

CLC Number:

TB34

DENG Hong-Gui, JIN Shuang-Ling, HE Xing, ZHAN Liang, QIAO Wen-Ming, LING Li-Cheng. LiFePO₄/C Nanocomposites Synthesized from Fe₂O₃ by a Hydrothermal Reaction-calcination Process and Their Electrochemical Performance[J]. Journal of Inorganic Materials, 2012, 27(9): 997-1002.

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LiFePO₄/C Nanocomposites Synthesized from Fe₂O₃ by a Hydrothermal Reaction-calcination Process and Their Electrochemical Performance

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