High performance porous polybenzimidazole membrane for alkaline fuel cells

被引：61

作者：

Zarrin, Hadis ^{[1
]}

Jiang, Gaopeng ^{[1
]}

Lam, Grace Y. -Y. ^{[2
]}

Fowler, Michael ^{[1
]}

Chen, Zhongwei ^{[1
]}

机构：

[1] Univ Waterloo, Dept Chem Engn, Waterloo Inst Nanotechnol, Waterloo Inst Sustainable Energy, Waterloo, ON N2L 3G1, Canada

[2] Univ British Columbia, Fac Sci, Vancouver, BC V6T 1Z4, Canada

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2014年 / 39卷 / 32期

基金：

加拿大自然科学与工程研究理事会;

关键词：

Alkaline fuel cells; Anion exchange membrane; Porous films; Ionic conductivity; Alkaline stability; ANION-EXCHANGE MEMBRANE; PHOSPHORIC-ACID; POLYMER ELECTROLYTES; HYBRID MEMBRANES; PBI COMPOSITE; HYDROXIDE; DEGRADATION; METHANOL; CONDUCTION; TRANSPORT;

D O I：

10.1016/j.ijhydene.2014.08.134

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this study, a highly ion-conductive and durable porous polymer electrolyte membrane based on ion solvating polybenzimidazole (PBI) was developed for anion exchange membrane fuel cells (AEMFCs). The introduction of porosity can increase the attraction of electrolytic solutions (e.g., potassium hydroxide (KOH)) and ion solvation, which results in the enhancement of PBI's ionic conductivity. The morphology, thermo-physico-chemical properties, ionic conductivity, alkaline stability, and the AEMFC performance of KOH-doped PBI membranes with different porosities were characterized. The ionic conductivity and AEMFC performance of 70 wt.% porous PBI was about 2 times higher than that of the commercially available Fumapem (R) FAA. All KOH-doped porous PBI membranes maintained their ionic conductivity after accelerated alkaline stability testing over a period of 14 days, while the commercial FAA degraded just after 3 h. The excellent performance and good durability of KOH-doped porous PBI membrane makes it a promising candidate for AEMFCs. Copyright (C) 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：18405 / 18415

页数：11

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