乙烯醇
膜
甲醇
高分子化学
Nafion公司
甲醇燃料
直接甲醇燃料电池
化学
离子交换
碱性燃料电池
离子电导率
酒
有机化学
聚合物
离子
电化学
电解质
电极
生物化学
物理化学
阳极
作者
Ying Xiong,Jun Fang,Qinghua Zeng,Qing Lin Liu
标识
DOI:10.1016/j.memsci.2007.12.029
摘要
A series of novel cross-linked quaternized poly(vinyl alcohol) (PVA) membranes have been prepared and characterized for alkaline direct methanol fuel cell (DMFC) applications. It was found that quaternary ammonium groups were grafted onto the backbone of the PVA chain with low substitution. The ionic conductivity of these new anion exchange membranes can be as high as 7.34 × 10−3 S/cm in deionized water at 30 °C, which is higher than that of other anion exchange membranes. The methanol permeability of the membrane is found to be reduced relative to Nafion® 117 membranes, and the methanol permeability decreases with increasing methanol concentration. These new quaternized poly(vinyl alcohol) membranes may be used in alkaline direct methanol fuel cells for easy preparation and lower cost.
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