화학공학소재연구정보센터
Macromolecular Research, Vol.25, No.1, 5-10, January, 2017
Lithium Ion Battery Fabricated by Curable Copolyester/Al2O3 Composite-Coated Nonwoven Poly(ethylene terephthalate) Separator
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The advantages of a curable copolyester (Ester)/Al2O3 composite and nonwoven poly(ethylene terephthalate) (NWPET) separator were combined in attempt to develop a separator system for lithium ion batteries that is predicted to be quite stable at high temperatures, up to 200 °C. Various properties of separators, including the battery performance of unit cells fabricated from them, were investigated.The curable copolyester/Al2O3 compositecoated nonwoven PET (Ester-NWPET) separator remained quite stable up to 200 °C when exposed in polycarbonate. In battery performance tests, the Ester-NWPET separator showed better cycle life than bare polyethylene (PE) separator because of enhanced wettability of the developed separator.