Research on Modification of Cathode Material Li2FeSiO4/C for Lithium-ion Battery

Chem. J. Chinese Universities ›› 2010, Vol. 31 ›› Issue (11): 2148.

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Research on Modification of Cathode Material Li2FeSiO4/C for Lithium-ion Battery

HE Xing-Guang, YANG Gui-Ling, SUN Li-Qun, XIE Hai-Ming, WANG Rong-Shun*

Department of Chemistry, Northeast Normal University, Materials Science and Technology Center of Lithium Ion Battery, Changchun 130024, China

Received:2009-11-30 Online:2010-11-10 Published:2010-11-10
Contact: WANG Rong-Shun. E-mail: wangrs@nenu.edu.cn
Supported by:
国家科技支撑计划(批准号: 2009BAG19B00)和吉林省科技发展计划(批准号: 20076020, 20080304)资助.

Abstract

Abstract: Li2Fe1-xMnxSiO4/C(x=0, 1/4, 1/3, 1/2) cathodes materials were synthesized by modified sol-gel method. The structure and morphology of the materials were characterized by XRD, Raman scattering spectra and SEM. The electrochemical properties of the materials were tested by constant-current cyclic testing. The results show that Li2Fe3/4Mn1/4SiO4/C has a good electrochemical performance. The first discharge capacity of Li2Fe3/4Mn1/4SiO4/C cathode material at room temperature reaches 201.0 mA·h/g when cycled at C/16 between 1.5 and 4.8 V.

Key words: Li-ion battery, Cathode material, Li2FeSiO4

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HE Xing-Guang, YANG Gui-Ling, SUN Li-Qun, XIE Hai-Ming, WANG Rong-Shun*. Research on Modification of Cathode Material Li2FeSiO4/C for Lithium-ion Battery[J]. Chem. J. Chinese Universities, 2010, 31(11): 2148.

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Research on Modification of Cathode Material Li2FeSiO4/C for Lithium-ion Battery

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