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Ionomer composite membranes for H{sub 2}/O{sub 2} fuel cells, elaboration and characterization; Membranes ionomeres composites pour piles a combustibles H{sub 2}/O{sub 2}, elaboration et caracterisation

Thesis/Dissertation:

Abstract

In order to propose an alternative to per-fluorinated membranes for polymer electrolyte fuel cells, several protonic conduction polymer membranes have been elaborated and their electrochemical and physical properties have been characterized, in particular, their mechanical and thermal stability. The first family of membranes is obtained by dispersion of a protonic superconducting inorganic powder (H{sub 3}Sb{sub 3}P{sub 2}O{sub 14}, xH{sub 2}O, = 10{sup -2}.cm{sup -1}) inside an EPDM commercial polymer matrix. Despite their relatively high conductivities, these composite membranes do not fulfill the expected requirements because of the ohmic drop they generate and of their gases permeability. In the second approach, a thermoplastic ionomer, PSS, has been selected has polymer matrix. PSS is prepared by sulfonation of poly(sulfonated ether arylene). These composite membranes fulfill the proton exchange membrane fuel cells (PEMFC) specifications, in particular in terms of thermal, mechanical and electrochemical stability. Their protonic conductivity is close to the one of Nafion 117 but their gas permeability is much lower than the one of Nafion 117. They have been successfully tested on a test bench during 500 hours. Finally, their relatively low price would allow to consider their industrial production in a near future. (J.S.)
Authors:
Publication Date:
Jul 01, 1997
Product Type:
Thesis/Dissertation
Report Number:
FRNC-TH-5140
Resource Relation:
Other Information: TH: These sciences appliquees; 185 refs.; PBD: 1997
Subject:
36 MATERIALS SCIENCE; 30 DIRECT ENERGY CONVERSION; PROTON EXCHANGE MEMBRANE FUEL CELLS; MEMBRANES; IONIC CONDUCTIVITY; ETHYLENE PROPYLENE DIENE POLYMERS; COMPOSITE MATERIALS; SUPERCONDUCTORS; PERMEABILITY; THERMOPLASTICS; STABILITY; MECHANICAL PROPERTIES; HEAT RESISTANT MATERIALS
OSTI ID:
20456356
Research Organizations:
Institut National Polytechnique, 38 - Grenoble (France)
Country of Origin:
France
Language:
French
Other Identifying Numbers:
TRN: FR0301927
Availability:
Available from Institut National Polytechnique de Grenoble, 46 avenue Felix Viallet, 38031 - Grenoble Cedex 1 (France)
Submitting Site:
FR
Size:
201 pages
Announcement Date:

Thesis/Dissertation:

Citation Formats

Baradie, B. Ionomer composite membranes for H{sub 2}/O{sub 2} fuel cells, elaboration and characterization; Membranes ionomeres composites pour piles a combustibles H{sub 2}/O{sub 2}, elaboration et caracterisation. France: N. p., 1997. Web.
Baradie, B. Ionomer composite membranes for H{sub 2}/O{sub 2} fuel cells, elaboration and characterization; Membranes ionomeres composites pour piles a combustibles H{sub 2}/O{sub 2}, elaboration et caracterisation. France.
Baradie, B. 1997. "Ionomer composite membranes for H{sub 2}/O{sub 2} fuel cells, elaboration and characterization; Membranes ionomeres composites pour piles a combustibles H{sub 2}/O{sub 2}, elaboration et caracterisation." France.
@misc{etde_20456356,
title = {Ionomer composite membranes for H{sub 2}/O{sub 2} fuel cells, elaboration and characterization; Membranes ionomeres composites pour piles a combustibles H{sub 2}/O{sub 2}, elaboration et caracterisation}
author = {Baradie, B}
abstractNote = {In order to propose an alternative to per-fluorinated membranes for polymer electrolyte fuel cells, several protonic conduction polymer membranes have been elaborated and their electrochemical and physical properties have been characterized, in particular, their mechanical and thermal stability. The first family of membranes is obtained by dispersion of a protonic superconducting inorganic powder (H{sub 3}Sb{sub 3}P{sub 2}O{sub 14}, xH{sub 2}O, = 10{sup -2}.cm{sup -1}) inside an EPDM commercial polymer matrix. Despite their relatively high conductivities, these composite membranes do not fulfill the expected requirements because of the ohmic drop they generate and of their gases permeability. In the second approach, a thermoplastic ionomer, PSS, has been selected has polymer matrix. PSS is prepared by sulfonation of poly(sulfonated ether arylene). These composite membranes fulfill the proton exchange membrane fuel cells (PEMFC) specifications, in particular in terms of thermal, mechanical and electrochemical stability. Their protonic conductivity is close to the one of Nafion 117 but their gas permeability is much lower than the one of Nafion 117. They have been successfully tested on a test bench during 500 hours. Finally, their relatively low price would allow to consider their industrial production in a near future. (J.S.)}
place = {France}
year = {1997}
month = {Jul}
}