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Comparative study of composite membranes from nano‐metal‐oxide‐incorporated polymer electrolytes for direct methanol alkaline membrane fuel cells
Author(s) -
Vinodh Rajangam,
Sangeetha Dharmalingam
Publication year - 2012
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.38266
Subject(s) - polysulfone , membrane , materials science , chemical engineering , electrolyte , polystyrene , ionic conductivity , polymer , ethylene oxide , ion exchange , polymer chemistry , methanol , composite number , direct methanol fuel cell , chemistry , composite material , electrode , ion , organic chemistry , copolymer , biochemistry , anode , engineering
A series of six composite membranes was prepared with two polymer electrolytes and three inorganic fillers, namely, silica, titania, and zirconia by a solution casting method. Two polymer electrolytes, that is, anion‐exchange membranes, were prepared from polystyrene‐ block ‐poly(ethylene‐ ran ‐butylene)‐ block ‐polystyrene (PSEBS) and polysulfone by chloromethylation and quaternization. A preliminary characterization of the ionic conductivity, methanol permeability, and selectivity ratio was done for all of the prepared composite membranes to check their suitability to work in direct methanol alkaline membrane fuel cells (DMAMFCs). The DMAMFC performance was analyzed with an in‐house fabricated single cell unit with a 25‐cm 2 area. Maximum performance was achieved for the composite membrane quaternized PSEBS/7.5% TiO 2 and was 74.5 mW/cm 2 at 60°C. For the comparison purposes, a commercially available anion‐exchange membrane (Anion Membrane International‐7001) was also investigated throughout the study. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013