Enhance cycling performance of LiMn2O4 cathode by Sr2+ and Cr3+ doping |
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Authors: | X Liang S Zeng Y Liu L Shi T Liu |
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Affiliation: | 1. Guangxi Key Laboratory of Automobile components and Vehicle TechnologyGuangxi University of Science and Technology, Liuzhou 545006, China;2. Vehicle Power and Materials Science LaboratoryGuangxi University of Science and Technology, Liuzhou 545006, China |
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Abstract: | Spinel LiSr0·1Cr0·1Mn1·8O4 was synthesised by high temperature solid state method in order to enhance the electrochemical performance. The LiSr0·1Cr0·1Mn1·8O4 (LSCMO) materials were characterised by X-ray diffraction (XRD), scanning electron microscopy (SEM) and electrochemical tests. The XRD and SEM studies confirm that LSCMO had spinel crystal structure with a space group of Fd3m, and the particle of LSCMO shows irregular shape. The cyclic voltammetry data illustrated that the heavy current charge–discharge performance of LMO was improved by Sr2+ and Cr3+ doping. The galvanostatic charge–discharge of LSCMO cathode materials was measured at 1, 5, 10 and 20 C. The results indicated that LSCMO improved the capacity retention. |
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Keywords: | Lithium ion battery Cycle performance High current charge–discharge |
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