Ordered Mesoporous Spinel LiMn2O4 by a Soft-Chemical Process as a Cathode Material for Lithium-Ion Batteries

Well-ordered mesoporous spinel-structured LiMn2O4 has been successfully prepared by annealing the lithiated mesoporous MnO2 at a low temperature of 350 °C, in which the lithiated MnO2 was obtained by the chemical lithiation of LiI with mesoporous MnO2. Both low-temperature heat treatment and chemica...

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Bibliographic Details
Published in:Chemistry of materials 2007-09, Vol.19 (19), p.4791-4795
Main Authors: Luo, Jia-yan, Wang, Yong-gang, Xiong, Huan-ming, Xia, Yong-yao
Format: Article
Language:English
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Summary:Well-ordered mesoporous spinel-structured LiMn2O4 has been successfully prepared by annealing the lithiated mesoporous MnO2 at a low temperature of 350 °C, in which the lithiated MnO2 was obtained by the chemical lithiation of LiI with mesoporous MnO2. Both low-temperature heat treatment and chemical lithiation processes could preserve the mesoporous structure of MnO2. The ordered mesoporous LiMn2O4 shows high rate capability and excellent cycling ability as a cathode for lithium-ion batteries:  it maintains 94% of its initial capacity after 500 cycles and keeps 80% of its reversible capacity at 0.1 C rate, even at 5 C rate.
ISSN:0897-4756
1520-5002
DOI:10.1021/cm0714180