Journal
IONICS
Volume 15, Issue 3, Pages 389-392Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s11581-008-0290-4
Keywords
Carrier transfer method; LiMn2O4; TiO2-coated; Li-ion battery; Electrochemical characterization
Funding
- Fujian Innovation Foundation [2004J004]
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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.
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