Synthesis, Characterization and Electrochemical Properties of Li1+xMn2O4 Spinels Prepared by Solution Combustion Synthesis

Bin Li; Mi Mi Chen; Hong Li Bai; Xiang Zhong Huang; Jun Ming Guo

doi:10.4028/www.scientific.net/AMR.652-654.891

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 652-654Synthesis, Characterization and Electrochemical...

Synthesis, Characterization and Electrochemical Properties of Li_1+xMn₂O₄ Spinels Prepared by Solution Combustion Synthesis

Abstract:

Li1+xMn2O4 prepared by solution combustion synthesis method has a strong exothermic peak at 282.1 °C, which is believed that the reaction of LiNO3, LiAc2•2H2O with Mn(NO3)2 and MnAc2•4H2O occurs in this region. So products were calcined at 500 °C would got fine crystalline. Pure phase LiMn2O4 can be prepared with x(Li)=0.16 and 0.24 without impurity. Li-rich samples for x(Li)=0.16 and 0.24 has nanoparticles of which the surface area will be more and can lead to better electrode performance. The initial discharge capacity of Li1.16Mn2O4 was the highest of 116.4mAh•g-1, with a 15 % loss of the initial capacity after 40 cycles, which is much better than bare LiMn2O4. Excess Li+ is beneficial to formation of pure phase of spinel LiMn2O4 and Li1.16Mn2O4 has best electrochemical performance in the method of solution combustion synthesis.

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Advanced Materials Research (Volumes 652-654)

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891-895

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https://doi.org/10.4028/www.scientific.net/AMR.652-654.891

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Online since:

January 2013

Authors:

Bin Li, Mi Mi Chen, Hong Li Bai, Xiang Zhong Huang, Jun Ming Guo

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Cathode Material, Li_1+xMn₂O₄, Lithium-Ion Battery, Solution Combustion Synthesis

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