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This work focuses on the development of innovative polymer‐based composites suitable for fuel cell bipolar plates. The developed composites need to fulfil the given requirements concerning electrical and thermal conductivity, mechanical properties, and additionally ensure easy implementation in industry. Various potentially suitable electrically conductive fillers, such as graphite, carbon black,...
Electrochemical impedance spectroscopy (EIS) is used to measure drying and rehydration in proton exchange membrane fuel cells running under load. The hysteresis between forward and backward acquisition of polarization curves is shown to be largely due to changes in the membrane resistance. Drying tests are carried out with hydrogen and simulated reformate (hydrogen and carbon dioxide), and quasi-periodic...
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