Abstract
A facile and convenient method is proposed to fabricate the LiMn2O4 microspheres from multi-shell MnO2. Comparing to the LiMn2O4 synthesized from commercial electrolytic MnO2 (EMD), the LiMn2O4 microspheres synthesized in this work exhibit a close-to-theory specific capacity of 145.9mAh/g at 0.2C, while the LiMn2O4 from commercial MnO2 only shows a value of 105.3mAh/g under the same testing conditions. LiMn2O4 microspheres also exhibit an excellent rate performance: 131.8 and 113.3mAh/g at 5 and 10C, respectively. This facile and convenient method to prepare LiMn2O4 microspheres provides a new way to fabricate lithium manganate cathode materials with high specific capacity and rate performance.
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