Novel proton conducting composite membranes for direct methanol fuel cell

被引：141
|
作者：
Li, L [1 ]
Xu, L [1 ]
Wang, YX [1 ]
机构：
[1] Tianjin Univ, Chem Engn Res Ctr, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China
来源：
MATERIALS LETTERS | 2003年 / 57卷 / 08期
基金：
中国国家自然科学基金;
关键词：
composite membranes; PVA; phosphotungstic acid; conductivity; DMFC;
D O I：
10.1016/S0167-577X(02)00998-9
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A novel composite membrane based on poly(vinyl alcohol) (PVA) with embedded phosphotungstic acid (PWA) were prepared and their proton conductivity and methanol permeability were studied. Infrared (IR) and UV spectrographic measurement indicates that the Keggin structure characteristic of the PW12O403- anion presents in the PVA membranes. Highest proton conductivity of 6.27 x 10(-3) S/cm was measured at room temperature. The methanol permeability of these composite membranes ranges from 1.28 x 10(-7) to 4.54 x 10(-7) cm(2)/s. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：1406 / 1410
页数：5
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