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Research on Improving the Electrochemical Performance of LiMn2O4 via Cr-Doping

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Cr was doped into LiMn2O4 compound in this study through the traditional solid-state reaction route. The pattern of X-ray diffraction (XRD) revealed that the structure of LiMn2O4 had not changed, and scanning electron microscopy (SEM) exhibited that all samples possessed similar morphology. It was seen that all the samples presented more than 100 mAh/g capacity under different discharge current rates. Because partial Mn3+ was replaced by Cr3+, the LiMn2−x Cr x O4 revealed excellent cycling stability. Electrochemical result demonstrated that the optimal content of Cr-doping was 0.02, which had an initial discharged capacity of 133.9 mAh/g at 1C rate. These results suggest a new method for enhancing cycle stability of LiMn2O4 materials.
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Keywords: Cathode Material; Cr Doping; Lithium Ion Battery; Spherical LiMn2O4

Document Type: Research Article

Affiliations: 1: College of Packaging and Material Engineering, Hunan University of Technology, Zhuzhou, 412007, China 2: College of Life Sciences and Chemistry, Hunan University of Technology, Zhuzhou, 412007, China 3: College of Metallurgical and Materials Engineering, Hunan University of Technology, Zhuzhou 412008, P. R. China

Publication date: January 1, 2019

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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