聚（乙烯基苄基氯-甲基丙烯酸缩水甘油酯）/聚乙烯复合阴离子交换膜在钒氧化还原电池中的应用

聚（乙烯基苄基氯-甲基丙烯酸缩水甘油酯）/聚乙烯复合阴离子交换膜在钒氧化还原电池中的应用

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 $1.23{\times}10^{-7}\;cm^2\;min^{-1}$ compared to $17.9{\times}10^{-7}\;cm^2\;min^{-1}$ for Nafion 117 and $1.8{\times}10^{-7}\;cm^2\;min^{-1}$ 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%).

采用乙烯苄基氯 (VBC) 和甲基丙烯酸缩水甘油酯 (GMA) 共聚在 PE 基底上填孔制备了钒氧化还原液流电池 (VRB) 的阴离子交换膜。当 GMA 含量达到 65% 时，离子交换容量、吸水率和增重率均有增加，且趋势相似，表明单体提高了孔隙填充度和膜性能。还研究了钒离子渗透性和开路电压。VG65 膜的渗透率仅为 $1.23{\times}10^{-7}\;cm^2\;min^{-1}$，而 Nafion 117 的渗透率仅为 $17.9{\times}10^{-7}\;cm^2\;min^{-1}$，AMV 的渗透率仅为 $1.8{\times}10^{-7}\;cm^2\;min^{-1}$。因此，与商用膜 Nafion 117（约 58%）和 AMV（约 70%）相比，使用所制备膜的 VRB 单电池显示出更高的能量效率（超过 80%），高达 100 次循环。

甲基丙烯酸缩水甘油酯知识来源于网络，共同学习。

了解更多关于甲基丙烯酸缩水甘油酯的相关内容，玮成新材料（山东）有限公司。