MAI Liqiang, CHEN Wen, XU Qing, ZHU Quanyao, YANG Huipeng, XIE Yongxian

（Wuhan University of Technology‚430070）

Abstract: A modified Chimie Douce method was introduced for preparing inverse spinel LiCoVO₄ as novel high－voltage cathode material for Li－ion batteries. Investigations were coducted by XRD‚IR‚Laman and electrochemical techniques. The results of XRD show the high crystalline LiCoVO₄ with high phase purity are formed at 450℃. The results of the IR and Laman investigations show that the band located at ～820cm^-1 corresponding to the stretching vibration mode with the A₁ symmetry‚whereas the band situated at ～335cm^-1 corresponds to the bending mode of VO₄ tetrahedron with E symmetry.

Keywords: LiCoVO₄‚Chimie Douce method‚IR spectrum‚Laman spectrum‚cathode materials