Blend membranes based on sulfonated poly(ether ether ketone) and polysulfone bearing benzimidazole side groups for proton exchange membrane fuel cells

被引：111

作者：

Fu, Yongzhu

Manthiram, Arumugam ^{[1
]}

Guiver, Michael D.

机构：

[1] Univ Texas, Texas Mat Inst, 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：

ELECTROCHEMISTRY COMMUNICATIONS | 2006年 / 8卷 / 08期

关键词：

fuel cell; proton exchange membrane; blend membrane; sulfonated poly(ether ether ketone);

D O I：

10.1016/j.elecom.2006.06.018

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A novel acid-base blend membrane based on sulfonated poly(ether ether ketone) (SPEEK) and polysulfone bearing benzimidazole side groups has been synthesized, characterized, and evaluated in proton exchange membrane fuel cell (PEMFC). The benzimidazole group tethered to the polysulfone backbone acts as a medium through the basic nitrogen for transfer of protons between the sulfonic acid groups of SPEEK, supporting a Grotthuss-type mechanism in addition to the vehicle-type mechanism present among SPEEK. The blend membrane exhibits better performance in PEMFC at 90 and 100 degrees C compared to the pure SPEEK and Nation 115 membranes. The polymers bearing pendant benzimidazole groups offer a promising strategy to develop new membranes that can operate at higher temperatures and low relative humidity. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：1386 / 1390

页数：5

共 25 条

[1] Polymer electrolyte fuel cells based on phosphoric acid-impregnated poly(2,5-benzimidazole) membranes [J].