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Properties of Poly(Vinyl Alcohol)‐Based Composite Membranes for Direct Methanol Fuel Cell Applications
Author(s) -
Gao TongZhai,
Kandel Bishnu Sharma,
Oh SaeJoong
Publication year - 2007
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.200700210
Subject(s) - vinyl alcohol , membrane , chemistry , composite number , methanol , direct methanol fuel cell , casting , chemical engineering , fourier transform infrared spectroscopy , polymer chemistry , alcohol , nuclear chemistry , composite material , organic chemistry , materials science , polymer , biochemistry , electrode , anode , engineering
The feasibility of poly(vinyl alcohol)(PVA)/sulfosuccinic acid(SSA)/heteropolyacid (HPA) composite membranes was investigated to apply for direct methanol fuel cells (DMFC). The composite membranes were prepared by the solution casting method and their properties were examined. The FTIR spectra showed that the Keggin unit of HPA was preserved in the composite membranes and that specific interactions were involved between PVA and HPA. The composite membranes showed uniform distribution of PWA particles in the PVA/SSA/PWA composite membranes by FE‐SEM. The HPA bleeding out was observed to decrease with increasing HPA concentration. The proton conductivity of PVA/SSA/HPA composite membranes improved at low HPA concentration (5‐10 wt.%), while those properties decreased as HPA concentration increased over 10 wt.%.