Improved thermal stability of LiCoO2 by nanoparticle AlPO4 coating with respect to spinel Li1.05Mn1.95O4 |
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| Affiliation: | 1. College of Material Science and Engineering, China Jiliang University, Hangzhou, 310018, Zhejiang, China;2. Zhejiang Zhenlong Battery Co., Ltd, Huzhou, 313100, China;1. MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, No. 92 West-Da Zhi Street, Harbin, 150001 China;2. Chilwee Group, No. 12 Zhizhou Ave., Zhicheng New Industrial Park, Changxing County, Zhejiang, 313100 China;1. Research Center for Nanoscience and Nanotechnology, Institut Teknologi Bandung, Jl. Ganesha 10, Bandung 40132, Indonesia;2. Light-weight Structures Research Group, Faculty of Mechanical and Aerospace Engineering, Institut Teknologi Bandung, Jl. Ganesha 10, Bandung 40132, Indonesia;3. National Center for Sustainable Transportation Technology, Jl. Ganesha 10, Bandung 40132, Indonesia;4. Material Science and Engineering Research Group, Faculty of Mechanical and Aerospace Engineering, Institut Teknologi Bandung, Jl. Ganesha 10, Bandung 40132, Indonesia;5. Department of Physics, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Jl Ganesha 10, Bandung 40132, Indonesia;1. School of Chemistry, South China Normal University, Guangzhou 510631, China;2. Engineering Research Center of MTEES (Ministry of Education), Research Center of BMET (Guangdong Province), Engineering Lab. of OFMHEB (Guangdong Province), Key Lab. of ETESPG (GHEI), and Innovative Platform for ITBMD (Guangzhou Municipality), South China Normal University, Guangzhou 510006, China;3. Department of Materials Science and Engineering, University of Washington, Seattle, Washington 98195, United States |
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| Abstract: | The thermal instability of the LiCoO2 cathode material was greatly improved by the nanoparticle AlPO4 coating. The AlPO4 coating appears to minimize the violent exothermic reaction of the cathode with the flammable electrolytes, resulting in excellent thermal stability even at the overcharged state. Moreover, the results of the overcharge and elevated temperature cycling tests show that, when compared with the spinel Li1.05Mn1.95O4, the AlPO4 nanoparticle coating results not only in enhanced thermal stability of the cathodes but also in reduced Co dissolution in the electrolytes. |
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