aInstitute of New Energy Material Chemistry, Nankai University, Tianjin 300071, PR China
bDepartment of Materials Science and Engineering, Xiamen University, Xiamen, Fujian 361005, PR China
Available online 23 May 2008.
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Abstract
The copper-doped LiV3O8 was first prepared by mixing copper powder with solid-state synthesized LiV3O8 in distilled water. The electrochemical performance of the copper-doped LiV3O8 was compared with that of the undoped one. It was found that the electrochemical performance of the copper-doped sample is significantly improved, with an initial capacity of 265.0 mAh/g and a stabilized capacity of 227.7 mAh/g after 100 cycles. It indicates that the copper-doped LiV3O8 could be easily prepared by a simple addition of the doping metal.
Keywords: Lithium trivanadate; Copper lithium trivanadate; Composite materials; Crystal structure; Electrochemical performance
