Poly(aryl ether ketone) composite membrane as a high‐performance lithium‐ion batteries separator |
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| Authors: | Min Xie Mingying Yin Guangdi Nie Jun Wang Ce Wang Danming Chao Xincai Liu |
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| Affiliation: | Alan G. MacDiarmid Institute, College of Chemistry, Jilin University, Changchun, People's Republic of China |
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| Abstract: | We described the design and synthesis of a modified poly(aryl ether ketone) bearing phenolphthalein and allyl groups (P‐PAEK) via nucleophilic polycondensation. A new kind of composite separator, crosslinked P‐PAEK/polyvinylidene fluoride (c‐P‐PAEK/PVDF) membrane was successfully prepared using phase separation, phase inversion method, and UV crosslinking technique. As a separator of lithium‐ion battery, c‐P‐PAEK/PVDF membrane demonstrates high porosity and uniform distribution of pores with interconnected pathways. Low thermal shrinkage, distinct shut‐down effect, high liquid electrolyte uptake capacity, and exciting liquid electrolyte wettability of the prepared c‐P‐PAEK/PVDF membrane have been revealed through comprehensive study. Moreover, the c‐P‐PAEK/PVDF membrane was applied to assemble a conventional Li/LiFePO4 coin cell, which exhibited hopeful cell performance. © 2016 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2016 , 54, 2714–2721 |
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| Keywords: | lithium‐ion battery membranes photopolymerization poly(aryl ether ketone) poly(ether ketones) separator |
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