Effect of Temperature on Spinel LiMn2O4 by Molten-Salt Flameless Combustion Synthesis

Abstract:

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Effect of calcination temperature on spinel LiMn2O4 by molten-salt flameless combustion synthesis using the lithium acetate (lithium nitrate), manganese acetate (manganese nitrate) as raw materials was studied. The structural characterization and morphology of the powder were measured by X-ray diffraction and Scanning electron microscopy. The results indicated that the main phase was LiMn2O4, which could be obtained at 400-700 °C. The product crystallinity and particle size increased with increasing calcination temperature, but the capacity and cyclic stability decreased. When LiMn2O4 was calcinated at 400 °C and 500°C, the initial specific capacity at 0.1C rate was 104.2 and 101.5 mAh·g-1, respectively. After 30 cycles, the discharge capacity retention rate was 80.4 % and 83.5 %, respectively. The performance was the worst when LiMn2O4 was calcinated at 700°C, when the initial specific capacity was only 81.9 mAh·g-1.

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Periodical:

Edited by:

Linli Xu, Wenya Tian and Elwin Mao

Pages:

153-157

DOI:

10.4028/www.scientific.net/AMM.80-81.153

Citation:

M. Huang et al., "Effect of Temperature on Spinel LiMn2O4 by Molten-Salt Flameless Combustion Synthesis", Applied Mechanics and Materials, Vols. 80-81, pp. 153-157, 2011

Online since:

July 2011

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$35.00

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