| 초록 |
In this study, we have synthesized vinylbenzyl chloride-co-styrene-co-hydroxyethyl acrylate(VBC-St-HEA) copolymer that can be applied to redox flow battery process. Anion exchange membranes were prepared by the amination and crosslinking of the synthesized VBC-co-St-co-HEA copolymer. The chemical structure and thermal properties of VBC-co-St-co-HEA copolymer and aminated VBC-co-St-co-HEA (AVSH) membrane were characterized by FT-IR, 1H-NMR, TGA, and GPC analysis. The membrane properties such as ion exchange capacity(IEC), electrical resistance, ion conductivity and efficiency of all-vanadium redox flow battery were measured. The IEC value, electrical resistance, and ion conductivity were 1.17 meq/g, 1.9 Ω㎠, 0.009 S/cm, respectively. The charge-discharge efficiency, voltage efficiency and energy efficiency from result of all-vanadium redox flow battery test were 99.5%, 72.6% and 72.1%, respectively. |
