Inorganic ceramic fiber separator for electrochemical and safety performance improvement of lithium-ion batteries |
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| Affiliation: | 1. Institute of Power Source and Ecomaterials Science, Hebei University of Technology, Tianjin 300130, China;2. Key Laboratory of Special Functional Materials for Ecological Environment and Information (Hebei University of Technology), Ministry of Education, Tianjin 300130, China;3. Key Laboratory for New Type of Functional Materials in Hebei Province, Hebei University of Technology, Tianjin 300130, China;4. Shandong Quality Inspection Center of Lithium Battery Products, Zaozhuang 277800, China;1. Electrochemical Energy Systems Laboratory, ETM Division, University of Dayton Research Institute, 300 College Park, Dayton, OH 45469-0171, USA;2. Air Force Research Laboratory, Aerospace Systems Directorate, Wright-Patterson Air Force Base, OH 45433-7252, USA;3. UES, Inc. 4401 Dayton-Xenia Road, Dayton, OH 45432-1894, USA;4. Electrical and Computer Engineering, University of Dayton, 300 College Park, Dayton, OH 45469-0232, USA;1. School of Chemistry and Environment, South China Normal University, Guangzhou 510006, 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;1. School of Materials Science and Engineering,Shanghai University, Shanghai 200444, China;2. Research Centre of Nanoscience and Nanotechnology, Shanghai University, Shanghai 200444, China;3. Department of Chemistry, Ångström Advanced Battery Centre, Uppsala University, 75121 Uppsala, Sweden;4. Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China;1. College of Energy, Xiamen University, Xiamen 361102, China;2. College of Chemistry and Chemical Engineering, State key Laboratory for Physical Chemistry of Solid Surface, Collaborative Innovative Center of Chemistry for Energy Materials, Xiamen University, Xiamen 361005, China;1. Department of Chemical Engineering, Hanyang University, Seoul 133-791, Republic of Korea;2. Energy 2 Lab, Battery R&D Center, Samsung SDI, Gyeonggi-do 443-803, Republic of Korea;1. College of Chemistry and Chemical Engineering, State key laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovative Center of Chemistry for Energy Materials, Xiamen University, Xiamen 361005, China;2. College of Energy Research & School of Energy Research, Xiamen University, Xiamen 361102, China |
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| Abstract: | A separator based on ceramic fibers with excellent properties, utilized for powerful laminated lithium ion batteries, was prepared by low-cost production process. Physical and chemical characteristics of the separator and the electrochemical as well as the safety performance of lithium ion batteries were extensively investigated, and compared to commercialized polyethylene (PE) and ceramic-coating PE (C-PE) separators. The results demonstrated that inorganic ceramic fiber (CF) membrane exhibited higher porosity (85%), higher electrolyte uptake (381%) and higher ionic conductivity (1.48 mS/cm). Moreover, CF separator did not display thermal shrinkage at 160 °C for 1 h, manifesting that the separator possession of high thermal stability. The lithium nickel cobalt manganese oxide LiNi0.5Co0.2Mn0.3O2/ graphite battery employing the CF membrane displayed superior rate capability, which delivered the discharge capacities of 13.206 A h (0.2 C), 12.729 A h (0.5 C), and 12.074 A h (1 C), respectively. In addition, this battery improved cycle stability, with the capacity retention of 101.4% following 100 cycles at 1 C rate. Results of safety tests presented that batteries with CF separator passed both nail penetration and extrusion tests, implying that the safety performance was remarkably improved. Additionally, CF membrane had only 20 cents in cost for 1 Ah cells, which was ten times lower than commercial PE and C-PE separators. The perfect combination of good properties and low cost made it possible for the CF separator to be a promising separator for laminated lithium-ion batteries, which are especially used in electric vehicles. |
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| Keywords: | Lithium-ion battery Inorganic ceramic fiber Separator Safety performance |
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