Enhanced cycle ability of spinel LiMn2O4 by controlling the phase purity and structural strain |
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| Authors: | Jinhan Yao Chaoqi Shen Pinjie Zhang Duncan H. Gregory Lianbang Wang |
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| Affiliation: | 1. State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering and Material Science, Zhejiang University of Technology, Hangzhou, Zhejiang 310032, PR China;2. WestCHEM, School of Chemistry, University of Glasgow, Glasgow G12 8QQ, UK |
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| Abstract: | By applying the annealing step during the solid-state synthesis, well-crystallized spinel LiMn2O4 with high phase purity was fabricated. The sensitive effect of heating procedure on the structural and electrochemical properties of LiMn2O4 product was investigated. It was found that preheat-treatment-calcinations-annealing process can effectively eliminate the impurity phase. The post-annealing process also leads to a better crystalline and suitable strain for the LiMn2O4 product, which contributes to the enhanced cycling performance. |
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