On Preparation of Lithium Manganese Oxide From Two Different Manganese Sources
Currently,electrolytic manganese dioxidee and trimanganese tetraoxid are the two major manganese sources for the preparation of lithium manganese oxide.In this paper,lithium manganese oxide was prepared by high temperature reaction method with electrolytic manganese dioxide and spherical trimanganese tetraoxide respectively.The physicochemical and electrical properties of lithium manganese oxide were analyzed.The results show that when the sintering temperature was 760 ℃,lithium manganese oxide prepared from spherical trimanganese tetraoxide had better performance with the particle size D50 of 15.182 μm,the vibration density of 2.39 g/cm3 and the specific surface area of 0.289 cm2/g.And the discharge capacity was 111.65 mAh/g,and the capacity retention rate of 50 cycles could reach 95.71％.
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