A novel carbon-coated LiCoO2 as cathode material for lithium ion battery |
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| Institution: | 1. Institut de Chimie et des Matériaux Paris Est, ICMPE/GESMAT, UMR 7182CNRS-Université Paris Est Créteil (UPEC), 2 rue Henri Dunant, 94320 Thiais, France;2. DRT/LITEN/DTNM/LCMS, CEA Grenoble, 17 rue des Martyrs, 38054 Grenoble, France;3. Volvo Group Trucks Technology, Advanced Technology and Research, Sven Hultins Gata 9D, 41288 Gothenburg, Sweden;1. Center for Energy Convergence, Green City Research Institute, Korea Institute of Science and Technology, Hwarangno 14 gil 5, Seoul 136-791, Republic of Korea;2. Department of Energy and Environmental Engineering, Korea University of Science and Technology, 176 Gajungro Yuseong-gu, Daejeon 305-350, Republic of Korea;3. Karlsruhe Institute of Technology, IAM-AWP, P.O. Box 3640, 76021 Karlsruhe, Germany;4. Karlsruhe Nano Micro Facility, Hermann-von-Helmholtz-Platz 1, 76344 Egg.-Leopoldshafen, Germany;5. Department of Electrical Engineering, Faculty of Engineering, University of Indonesia, Kampus Baru UI, Depok 16424, Indonesia;1. Hangzhou Skyrich Power Co., Ltd., Hangzhou 310022, China;2. State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China;1. Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research (Ministry of Education of China), National and Local Joint Engineering Laboratory for New Petrochemical Materials and Fine Utilization of Resources, Hunan Normal University, Changsha, Hunan 410081, China;2. Tianjin Key Laboratory of Advanced Functional Porous Materials and Center for Electron Microscopy, Tianjin University of Technology, Tianjin 300384, China;3. Hunan Changyuan Lico, Co., LTD., Changsha 410205, China;4. Changsha Research Institute of Mining and Metallurgy Co Ltd, Changsha 410012, China |
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| Abstract: | Using a commercially available LiCoO2 as starting material, a surface-modified cathode material was obtained by coating it with a nano layer of amorphous carbon. The carbon-coated LiCoO2 was characterized by X-ray diffraction analysis, scanning electronic microscopy, transmission electronic microscopy, electrochemical impedance spectroscopy and measurement of charge/discharge behavior. Results show that the carbon-coated LiCoO2 displays marked lower charge transfer resistance, higher lithium ion diffusion coefficient and much better rate capability than the original LiCoO2. It also indicates promising application of lithium ion batteries in the areas requiring charge and discharge at high rate. |
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