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Title: Nanostructure and Properties of Sulfonated Polyarylenethioethersulfone Copolymers as Proton Exchange Fuel Cell Membranes

Abstract

A systematic investigation of properties and nanostructure of sulfonated polyarylenethioethersulfone (SPTES) copolymer proton exchange membranes for fuel cell applications has been presented. SPTES copolymers are high temperature resistant (250 C), and form tough films with excellent proton conductivity up to 170 {+-} 5 mS/cm (SPTES 70 @ 85 C, 85%RH). Small angle X-ray scattering of hydrated SPTES 70 revealed the presence of local water domains (diameter {approx}5 nm) within the copolymer. The high proton conductivity of the membranes is attributed to the formation of these ionic aggregates containing water molecules, which facilitate proton transfer. AFM studies of SPTES 70 as a function of humidity (25-65%RH) showed an increase in hydrophilic domains with increasing humidity at 22 C.

Authors:
; ;
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL) National Synchrotron Light Source
Sponsoring Org.:
Doe - Office Of Science
OSTI Identifier:
959916
Report Number(s):
BNL-82902-2009-JA
Journal ID: JPBPEM; TRN: US201016%%1060
DOE Contract Number:
DE-AC02-98CH10886
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Polymer Science Part B: Polymer Physics; Journal Volume: 45
Country of Publication:
United States
Language:
English
Subject:
30 DIRECT ENERGY CONVERSION; COPOLYMERS; FUEL CELLS; HUMIDITY; MEMBRANES; NANOSTRUCTURES; PROTONS; SCATTERING; WATER; FILMS; national synchrotron light source

Citation Formats

Yoonessi,M., Bai, Z., and Dang, T.. Nanostructure and Properties of Sulfonated Polyarylenethioethersulfone Copolymers as Proton Exchange Fuel Cell Membranes. United States: N. p., 2007. Web. doi:10.1002/polb.21279.
Yoonessi,M., Bai, Z., & Dang, T.. Nanostructure and Properties of Sulfonated Polyarylenethioethersulfone Copolymers as Proton Exchange Fuel Cell Membranes. United States. doi:10.1002/polb.21279.
Yoonessi,M., Bai, Z., and Dang, T.. Mon . "Nanostructure and Properties of Sulfonated Polyarylenethioethersulfone Copolymers as Proton Exchange Fuel Cell Membranes". United States. doi:10.1002/polb.21279.
@article{osti_959916,
title = {Nanostructure and Properties of Sulfonated Polyarylenethioethersulfone Copolymers as Proton Exchange Fuel Cell Membranes},
author = {Yoonessi,M. and Bai, Z. and Dang, T.},
abstractNote = {A systematic investigation of properties and nanostructure of sulfonated polyarylenethioethersulfone (SPTES) copolymer proton exchange membranes for fuel cell applications has been presented. SPTES copolymers are high temperature resistant (250 C), and form tough films with excellent proton conductivity up to 170 {+-} 5 mS/cm (SPTES 70 @ 85 C, 85%RH). Small angle X-ray scattering of hydrated SPTES 70 revealed the presence of local water domains (diameter {approx}5 nm) within the copolymer. The high proton conductivity of the membranes is attributed to the formation of these ionic aggregates containing water molecules, which facilitate proton transfer. AFM studies of SPTES 70 as a function of humidity (25-65%RH) showed an increase in hydrophilic domains with increasing humidity at 22 C.},
doi = {10.1002/polb.21279},
journal = {Journal of Polymer Science Part B: Polymer Physics},
number = ,
volume = 45,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2007},
month = {Mon Jan 01 00:00:00 EST 2007}
}