One-step synthesis LiMn2O4 cathode by a hydrothermal method

Spinel LiMn2O4 powders have been successfully synthesized by a hydrothermal method directly, which is no any pretreatment and following treatment in the process. The structure and morphology of the powders were studied in detail by means of X-ray diffraction (XRD), field emission scanning electron m...

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Bibliographic Details
Published in:Journal of power sources 2006-10, Vol.161 (2), p.1260-1263
Main Authors: WU, H. M, TU, J. P, YUAN, Y. F, CHEN, X. T, XIANG, J. Y, ZHAO, X. B, CAO, G. S
Format: Article
Language:English
Subjects:
Applied sciences
Direct energy conversion and energy accumulation
Electrical engineering. Electrical power engineering
Electrical power engineering
Electrochemical conversion: primary and secondary batteries, fuel cells
Exact sciences and technology
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Summary:Spinel LiMn2O4 powders have been successfully synthesized by a hydrothermal method directly, which is no any pretreatment and following treatment in the process. The structure and morphology of the powders were studied in detail by means of X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM) and thermogravimetric analysis (TGA). The data reveal that the products have well-defined stable spinel structure, and the particles show distinctive crystal faces with 50-300nm in particle sizes. The electrochemical characteristics of the spinel materials are measured in the coin-type cells in a potential range of 3.2-4.35V versus Li/Li+. The as-synthesized LiMn2O4 delivers reversible capacity of about 121mAhg-1 at a current density of 1/10C. Cycled the cell to 40 cycles, the capacity remains at about 111mAhg-1 at 1/2C.
ISSN:0378-7753
1873-2755
DOI:10.1016/j.jpowsour.2006.05.011