Blend membranes based on sulfonated poly(ether ether ketone) and polysulfone bearing benzimidazole side groups for DMFCs

被引：22

作者：

Fu, Y. -Z. ^{[1
]}

Manthiram, A.

Guiver, M. D.

机构：

[1] Univ Texas, Mat Sci & Engn Program, Austin, TX 78712 USA

[2] Natl Res Council Canada, Inst Chem Proc & Environm Technol, Ottawa, ON K1A 0R6, Canada

来源：

ELECTROCHEMICAL AND SOLID STATE LETTERS | 2007年 / 10卷 / 04期

关键词：

D O I：

10.1149/1.2434205

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Blend membranes consisting of sulfonated poly(ether ether ketone) (SPEEK), which is an acidic polymer, and polysulfone bearing benzimidazole side groups (PSf-BIm), which is a basic polymer, have been prepared with various PSf-BIm contents (0 - 10 wt%). The blend membranes have been characterized by ion exchange capacity, proton conductivity, liquid uptake, methanol permeability, and polarization measurements in direct methanol fuel cell (DMFC). The membranes with an optimum PSf-BIm content of similar to 8 wt% exhibit electrochemical performance in DMFC better than that of plain SPEEK membrane due to an enhancement in proton conductivity through acid-base interactions and lower methanol crossover. (c) 2007 The Electrochemical Society.

引用

页码：B70 / B73

页数：4

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