A Chitosan/Urushi Anion Exchange Membrane for a Nonaqueous Redox Flow Battery

Authors
Gong, Sung-JunKim, DongyoungCho, EunhaeHwang, Seung SangWon, Jongok
Issue Date
2017-02
Publisher
WILEY-V C H VERLAG GMBH
Citation
CHEMISTRYSELECT, v.2, no.5, pp.1843 - 1849
Abstract
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.
Keywords
POLYIMIDE/CHITOSAN COMPOSITE MEMBRANE; PERFORMANCE; POLYMERIZATION; SEPARATORS; CROSSOVER; CELL; POLYIMIDE/CHITOSAN COMPOSITE MEMBRANE; PERFORMANCE; POLYMERIZATION; SEPARATORS; CROSSOVER; CELL; Chitosan; electrolyte membrane; Non-aqueous; redox flow battery; pseudo-interpenetrating polymer network; urushi
ISSN
2365-6549
URI
https://pubs.kist.re.kr/handle/201004/123114
DOI
10.1002/slct.201601772
Appears in Collections:
KIST Article > 2017
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