Preparation of TiO2-coated LiMn2O4 by carrier transfer method

The TiO2-coated LiMn2O4 has been prepared by a carrier transfer method and investigated. This novel synthetic method involved the transfer of TiO2 into the surface of LiMn2O4 with Vulcan XC-72 active carbon powders as a dispersant. The X-ray diffraction shows that spinel structure of materials does not change after the coating of TiO2. The electrochemical performance tests show that the initial discharge capacity of TiO2-modified LiMn2O4 is 111.5 mA h g−1, which is better than that of pristine LiMn2O4 (103.8 mA h g−1). The cyclic performance is significantly improved after surface modification. The TiO2-modified LiMn2O4 by a carrier transfer method exhibits better discharge capability and lower resistance.