Characterization and preparation of Pt-Ru-Ir alloys produced by thermal pyrolysis for hydrogen production

Green hydrogen synthesis by renewable energy sources and for this reason is the best fuel to use in the construction of a sustainable economy. At present, PEM-type electrolyzers, when connected to a renewable energy source, produce electrical energy, which allows the production of this green hydrogen. This type of electrolyzer uses Pt-based electrodes, where the hydrogen evolution reaction (HER) is. However, it is necessary to reduce its content using platinum-based alloys with Ru, Os, Ir, etc.In the present work, the main goal is to demonstrate that Pt-Ru-Ir alloys made by the thermal pyrolysis technique can use as catalytic material at HER. Also, it shows the physical, morphological, composition, and electrochemical characterization of three different alloys made by the thermal pyrolysis technique. According to the results obtained, the catalytic material with the following stoichiometry Pt2.5Ru0.5Ir4.5 has kinetic parameters similar to Pt.