Poly(vinylidene fluoride)/poly(acrylonitrile) blend fibrous membranes by centrifugal spinning for high‐performance lithium ion battery separators |
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Authors: | Ruihua Lv Yun Zhu Hesheng Liu Bing Na Yanghui Huang Xiuli Xie |
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Affiliation: | Fundamental Science on Radioactive Geology and Exploration Technology Laboratory School of Chemistry Biology and Materials Science, East China University of Technology, Nanchang, People's Republic of China |
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Abstract: | Fibrous membranes are promising as high‐performance lithium ion battery separators because of high porosity and superior electrolyte uptake. Electrospinning is a popular approach to produce fibrous membranes, but its production rate is very low. As a comparison, mass production of fibrous membranes can be achieved by centrifugal spinning. This study reports fibrous membranes based on poly(vinylidene fluoride)/poly(acrylonitrile) blends by centrifugal spinning and their application as lithium ion battery separators. The blend fibrous membranes have high electrolyte uptake of about 300%, excellent dimensional stability at 180 °C and good mechanical strength over 18 MPa. The coin cells with the blend fibrous membranes as separators show high discharge capacity of 147.7 mAh/g at 0.2 C and superior C‐rate performance. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134, 44515. |
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Keywords: | batteries and fuel cells fibers porous materials synthesis and processing techniques |
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