Synthesis and electrochemical properties of spinel LiMn2O4 prepared by the rheological phase method |
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Authors: | Wen-Jia Zhou Shu-Juan Bao Yan-Yu Liang Ben-Lin He Hu-Lin Li |
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Institution: | (1) College of Chemistry and Chemical Engineering of Lanzhou University, Lanzhou, 730000, People’s Republic of China |
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Abstract: | Pure-phase and well-crystallized spinel LiMn2O4 powders were successfully synthesized by a simple rheological phase method. The thermal behavior and structure properties
of the powders prepared by the rheological phase method compared with the solid-state reaction were investigated by thermogravimetry,
powder X-ray diffraction , scanning electron microscopy and transmission electron microscopy. According to the results of
the electrochemical tests, it is obvious that the sample resulting from the rheological phase method shows higher discharge
capacity and better cycling stability than one formed in the solid-state reaction. The cyclic voltammogram and columbic efficiency
curves also confirm that the product by the rheological phase method has a good cycling performance due to its fine cubic
spinel structure and morphology. |
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Keywords: | LiMn2O4 Lithium-ion battery Rheological phase method Spinel Cycling performance |
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