Poly(vinylbenzyl chloride-glycidyl methacrylate)/Polyethylene Composite Anion Exchange Membranes for Vanadium Redox Battery Application

Bulletin of the Korean chemical society

Kyoung-Hee Shin¹  Se-Kook Park¹  Min-A Park¹  Joonmok Shim¹  Jae-Deok Jeon¹  Ki Bong Lee¹  Chang-Soo Jin¹ 

关键词: Vanadium redox battery;    Anion exchange membrane;    Vinylbenzyl chloride;    Glycidyl methacrylate;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

Anion exchange membranes for a vanadium redox flow battery (VRB) were prepared by pore-filling on a PE substrate with the copolymerization of vinylbenzyl chloride (VBC) and glycidyl methacrylate (GMA). The ion exchange capacity, water uptake and weight gain ratio were increased with a similar tendency up to 65% of GMA content, indicating that the monomer improved the pore-filling degree and membrane properties. The vanadium ion permeability and open-circuit voltage were also investigated. The permeability of the VG65 membrane was only 1.23 × 10−7 cm2 min−1 compared to 17.9 × 10−7 cm2 min−1 for Nafion 117 and 1.8 × 10−7 cm2 min−1 for AMV. Consequently, a VRB single cell using the prepared membrane showed higher energy efficiency (over 80%) of up to 100 cycles compared to the commercial membranes, Nafion 117 (ca. 58%) and AMV (ca. 70%).

【 授权许可】

Unknown