Alkali doped polybenzimidazole membrane for alkaline direct methanol fuel cell

被引：120

作者：

Hou, Hongying ^{[1
,3
]}

Sun, Gongquan ^{[1
]}

He, Ronghuan ^{[2
]}

Sun, Baoying ^{[2
]}

Jin, Wei ^{[1
,3
]}

Liu, He ^{[1
,3
]}

Xin, Qin ^{[1
]}

机构：

[1] Chinese Acad Sci, Dalian Inst Chem Phys, Direct Alcohol Fuel Cells Lab, Dalian 116023, Peoples R China

[2] Northeastern Univ, Shenyang 110004, Peoples R China

[3] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2008年 / 33卷 / 23期

关键词：

Polybenzimidazole (PBI); Alkali direct methanol fuel cell (ADMFC); Fast kinetics;

D O I：

10.1016/j.ijhydene.2008.09.023

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：

An anion exchange membrane for alkaline direct methanol fuel cell (ADMFC) was prepared by doping polybenzimidazole(PBI) membrane with KOH. The obtained membrane was characterized by means of XRD, TGA-DTA, AC and so on. The results suggested that it possessed satisfying thermal stability and comparable mechanical strength with acid doped PBI. At room temperature, methanol permeability through this membrane was one order of magnitude lower than that of Nafion(R) membrane, while its ionic conductivity was comparable with that of other anion exchange membranes in literatures. For ADMFC at 90 degrees C based on this PBI/KOH membrane electrolyte, the peak power density was about 31 mW/cm(2), which was significantly improved mainly due to this membrane's high thermal stability, fast kinetics of electrochemical reactions and lower methanol permeability. (C) 2008 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved

引用

页码：7172 / 7176

页数：5

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