聚乙烯醇
膜
壳聚糖
电解质
铵
聚合物
化学工程
高分子化学
离子交换
化学
材料科学
离子
有机化学
电极
生物化学
物理化学
工程类
作者
Hongje Jang,Ha Neul Jeong,Sang Min Eom,Seong Min Han,Seong Heon Kim,Hyukjoon Kwon,Kwang Seop Im,Vijayalekshmi Vijayakumar,Sang Yong Nam
标识
DOI:10.1016/j.ijbiomac.2024.129979
摘要
In this study, 1-bromohexyl-1methylpiperidinium bromide (Br-6-MPRD) ionic liquid grafted quaternized chitosan (QCS) and polyvinyl alcohol (PVA) blends were composited with glycidyl trimethyl ammonium chloride (GTMAC) quaternized silica (QSiO2) at different dosages. Glutaraldehyde (GA) crosslinked the membranes and then processed into hydroxide form with an aqueous potassium hydroxide solution. The resultant IL-QCS/PVA/QSiO2 membranes exhibit significantly improved ionic conductivity, moderate water absorption and swelling ratio compared with the pristine IL-QCS/PVA anion exchange membrane (AEM). Among them, the hydroxide ion conductivity and power density of IL-QCS/PVA/QSiO2-7 membrane can reach up to 78 mS cm−1 at 80 °C and 115 mW cm−2 at 60 °C respectively. In addition, IL-QCS/PVA/QSiO2 membranes have excellent thermal, mechanical, and chemical stabilities, which can meet the application requirements of AEM for fuel cells.
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