A heatproof separator for lithium-ion battery based on nylon66 nanofibers |
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| Authors: | Haolun Wang Ning Wang Tao Liu Chunsong Zhao Xi Luo Lifang Zhang Yulei Chang Hui Wu |
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| Institution: | 1.State Key Laboratory of Electronic Thin Films and Integrated Devices,University of Electronic Science and Technology of China,Chengdu,China;2.State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering,Tsinghua University,Beijing,China |
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| Abstract: | The safety of lithium-ion battery is closely related to the anti-shrink and heatproof stability of the separator. In this paper, electrospun nylon66 (PA66) nanofiber-based membrane is used as lithium-ion battery separator, showing good thermodynamics properties via thermogravimetric analysis (TG), thermal shrinkage experiment, and tension test. Furthermore, electrospun nylon66 separator based battery exhibits better safety than the battery applying Celgard commerce separator under the condition of high temperature and severe vibration. Meanwhile, the electrochemical properties of both batteries are nearly identical. These facts prove that the electrospun nylon66 separator is an ideal separator candidate for power lithium-ion battery of electric vehicles. In addition, the nylon66 separator annealed in the air has higher tensile strength and better property of elongation than the unannealed one. |
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