Preparation and characterization of CPPO/BPPO blend membranes for potential application in alkaline direct methanol fuel cell
Preparation and characterization of CPPO/BPPO blend membranes for potential application in alkaline direct methanol fuel cell
复制标题
CPPO/BPPO共混膜的制备和表征及其在碱性直接甲醇燃料电池中的潜在应用
DOI：
10.1016/j.memsci.2007.11.039
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发表时间：
2008-03-05
影响因子：
9.5
通讯作者：
Zheng, Xin
中科院分区：
文献类型：
--
作者：
Wu, Liang;Xu, Tongwen;Zheng, Xin
将氯乙酰化聚（2，6-二甲基-1，4-苯醚）（CPPO）与溴甲基化聚（2，6-二甲基-1，4-苯醚）（BPPO）共混，制备了一系列羟基导电阴离子交换膜，并评价了其燃料电池相关性能。所得膜表现出高的羟基电导率（0.022- 0，032 S cm（-1），25 ℃）和低的甲醇渗透率（1.35 × 10（-7）至1.46 × 10（-7）cm（2）s（-1））。扫描电镜（SEM）和差示扫描量热仪（DSC）的研究表明，所有的共混膜是相容的或部分相容的。通过条件优化，CPPO质量分数为30- 40%的共混膜具有较低的甲醇渗透率、优异的力学性能和较高的羟基电导率，可用于直接甲醇碱性燃料电池。(C)2007 Elsevier B. V.保留所有权利。
A series of hydroxyl-conducting anion-exchange membranes were prepared by blending chloroacetylated poly(2,6-dimethyl-1,4-phenylene oxide) (CPPO) with bromomethylated poly(2,6-dimethyl-1,4-phenylene oxide) (BPPO), and their fuel cell-related performances were evaluated. The resulting membranes exhibited high hydroxyl conductivities (0.022-0,032 S cm(-1) at 25 degrees C) and low methanol permeability (1.35 x 10(-7) to 1.46 x 10(-7) cm(2) s(-1)). All the blend membranes proved to be miscible or partially miscible under the investigations of scanning electron microscopy (SEM) and differential scanning calorimeters (DSC). By condition optimization, the blend membranes with 30-40 wt% CPPO are recommended for application in direct methanol alkaline fuel cells because they showed low methanol permeability, excellent mechanical properties and comparatively high hydroxyl conductivity. (C) 2007 Elsevier B.V. All rights reserved.