Properties of graphite-stainless steel composite in bipolar plates in simulated anode and cathode environments of PEM fuel cells

Author:

Włodarczyk Renata1

Affiliation:

1. Department of Energy Engineering, Faculty of Environmental Engineering and Biotechnology, Czestochowa University of Technology, ul. Brzeznicka 60a, 42-200, Czestochowa, Poland

Abstract

Abstract The use of a graphite-stainless steel composite as bipolar plates (BP) in polymer electrolyte membrane fuel cells (PEMFCs) has been evaluated. The study covers measurements of mechanical properties, microstructural examination, analysis of surface profile, wettability, porosity and corrosion resistance of the composite. The corrosion properties of the composite were examined in 0.1 mol·dm−3 H2SO4 + 2 ppm F− saturated with H2 or with O2 and in solutions with different pH: in Na2SO4+ 2 ppm F− (pH = 1.00, 3.00, 5.00) at 80 °C. The performed tests indicate that the graphite modified with stainless steel can be a good choice to be used as a bipolar plate in PEM fuel cells.

Publisher

Walter de Gruyter GmbH

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

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