Titanium sinter as gas diffusion backing in PEMFC

The use of a titanium sinter material as gas diffusion backing (GDB) in a polymer electrolyte membrane fuel cell (PEMFC) has been evaluated. The study focused on reducing the high contact resistance between the sinter and MEA using platinum and carbon coatings evaporated on the surface of the sinter...

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Bibliographic Details
Published in:Journal of power sources 2003-05, Vol.118 (1), p.183-188
Main Authors: Hottinen, T., Mikkola, M., Mennola, T., Lund, P.
Format: Article
Language:English
Subjects:
Applied sciences
Contact resistance
Energy
Energy. Thermal use of fuels
Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc
Exact sciences and technology
Fuel cells
Gas diffusion backing
PEMFC
Titanium sinter
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Summary:The use of a titanium sinter material as gas diffusion backing (GDB) in a polymer electrolyte membrane fuel cell (PEMFC) has been evaluated. The study focused on reducing the high contact resistance between the sinter and MEA using platinum and carbon coatings evaporated on the surface of the sinter. The results show that the titanium sinters are a promising solution for gas diffusion backing in a fuel cell and that the initially high contact resistance observed can be effectively reduced with platinum coating. The coatings also reduce the mass diffusion overpotential observed with the sinter.
ISSN:0378-7753
1873-2755
DOI:10.1016/S0378-7753(03)00087-9