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Electrocatalytic activity of Ni and NiMo electrodeposited in a three-dimensional polyaniline (PANI) matrix was investigated in the hydrogen evolution reaction (HER). By using PANI an increase in surface roughness of the metallic catalytic layers could be obtained, ultimately yielding an increased overall electrocatalytic activity in the HER. It was demonstrated that alloying Ni with Mo results in...
We report in this paper the occurrence of potential oscillations in a proton exchange membrane fuel cell (PEMFC) with a Pd–Pt/C anode, fed with H 2 /100ppm CO, and operated at 30°C. We demonstrate that the use of Pd–Pt/C anode enables the emergence of dynamic instabilities in a PEMFC. Oscillations are characterized by the presence of very high oscillation amplitude, ca. 0.8V, which is almost...
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