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Transformation from Monoclinic LiMnO2 to Spinel LixMn2O4 during Electrochemical Cycling

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Abstract:

The monoclinic LiMn0.9Cr0.1O2 irreversibly transforms to spinel-like structure m-LiMnO2 during the electrochemical cycling. Experimental results indicated that the (440) interplanar distance of LixMn2O4 at the charged state increases as the cycle number increases, while the (440) interplanar distance of LixMn2O4 at the discharged state decreases as the cycle number increases.A model for the transformation of monoclinic LiMn0.9Cr0.1O2 to the spinel LiMn2O4 is suggested. According to the suggested model, there may exist two types of s-LixMn2O4 when m-LiMnO2 transforms into s-LixMn2O4. The two types of spinel LixMn2O4 develop the nanodomain.

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Periodical:

Key Engineering Materials (Volumes 368-372)

Pages:

270-273

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.368-372.270

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Online since:

February 2008

Authors:

Yi Jie Gu, Y.B. Chen, H.K. Wu, X.W. Huang, X.B. Liu, Hongzhi Cui, Y.M. Wang, Z.N. Yang, C.L. Wang, H. Huo

Keywords:

Electrochemistry Behaviour, Monoclinic LiMnO2, Nanodomain, Spinel-Like Structure

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© 2008 Trans Tech Publications Ltd. All Rights Reserved

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