Gong, Sung-Jun Kim, Dongyoung Cho, Eunhae Hwang, Seung Sang Won, Jongok 2024-01-20T02:04:32Z 2024-01-20T02:04:32Z 2021-09-01 2017-02 2365-6549 https://pubs.kist.re.kr/handle/201004/123114 A new bio-based anion exchange composite membrane that consists of a chitosan/urushi (C/U) pseudo-interpenetrating polymer network (IPN) coated on the surface of a porous support was prepared for non-aqueous redox flow battery (RFB). Celgard membranes composed of polypropylene were used as the porous support. A C/U pseudo-IPN film was formed by laccase-catalysed polymerization and aerobic oxidative polymerization. The ion conductivity increased with an increasing amount of chitosan in the C/U coating layer, and the composite membranes had lower vanadium acetylacetonate permeability than a pristine Celgard support. The performance of a non-aqueous RFB increased with an increasing amount of chitosan in the C/U layer in the surface-modified Celgard membrane. The coulombic efficiency and energy efficiency values were 66% and 40.5%, respectively, for a RFB with a surface-modified membrane that contained 17 wt% chitosan in the C/U layer. These values were higher than those of the commercial Neosepta AHA membrane, which had a dense structure, indicating that the C/U pseudo-IPN layer on the porous support provided the selectivity of the redox active species. English WILEY-V C H VERLAG GMBH POLYIMIDE/CHITOSAN COMPOSITE MEMBRANE PERFORMANCE POLYMERIZATION SEPARATORS CROSSOVER CELL A Chitosan/Urushi Anion Exchange Membrane for a Nonaqueous Redox Flow Battery Article 10.1002/slct.201601772 1 CHEMISTRYSELECT, v.2, no.5, pp.1843 - 1849 CHEMISTRYSELECT 2 5 1843 1849 scie scopus 000395534200015 2-s2.0-85041951632 Chemistry, Multidisciplinary Chemistry Article POLYIMIDE/CHITOSAN COMPOSITE MEMBRANE PERFORMANCE POLYMERIZATION SEPARATORS CROSSOVER CELL Chitosan electrolyte membrane Non-aqueous redox flow battery pseudo-interpenetrating polymer network urushi