Preparation of polytetrafluoroethylene porous membrane based composite alkaline exchange membrane with improved tensile strength and its fuel cell test

被引：17

作者：

Cao, Yuan-Cheng ^{[1
]}

Scott, Keith ^{[1
]}

Wang, Xu ^{[1
]}

机构：

[1] Newcastle Univ, Sch Chem Engn & Adv Mat, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2012年 / 37卷 / 17期

基金：

英国工程与自然科学研究理事会;

关键词：

Alkaline anion exchange membrane; Ionomer; Quaternary ammonium; PTFE porous membrane; Fuel cells;

D O I：

10.1016/j.ijhydene.2012.05.134

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：

A strategy to improve the alkaline exchange membrane tensile strength was introduced based on porous PTFE and quaternized polyvinyl benzyl chloride (qPVBz/OH-). A thin PTFE film was used as the support to prepare the composite AAEM to improve the mechanical strength. Tensile stress tests showed 51.1 MPa which was twice that of the pure anion exchange membrane qPVBz/OH-. SEM observations showed that the pores of the PTFE were successfully filled with qPVBz/OH- polymer and there was no structure defects in the cross-section of the resultant membrane. The synthesized composite membrane had very good thermal stability. The through plane ionic conductivity was in the range of 1.65 x 10(-2) to 2.2 x 10(-2) S cm(-1) in the temperature range of 25 degrees C-60 degrees C. The power density of H-2 and O-2 fuel cell gave 162 mW cm(-2). Copyright (C) 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：12688 / 12693

页数：6

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