| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 46484 | Applied Catalysis B: Environmental | 2012 | 5 Pages |
Powders of ruthenium and iridium-based materials were synthesized by the thermal decomposition process. The suitable heat treatment of the polymeric precursors allowed to recover metal oxides free from organic carbon, which can be oxidized to carbon dioxide during H2O splitting at elevated potentials. The materials were examined by various physicochemical techniques in order to understand their electrochemical behavior as anodes in a 5 cm2 single proton exchange membrane water electrolyzer. Although the presence of Ir in the electrocatalyst composition contributes undoubtedly to its stability against ruthenium dissolution and the Faradaic efficiency of the PEM electrolysis cell, its great amount increases the overpotential value. The activity of the home made RuxIr1−xO2 anodes towards the oxygen evolution reaction occurs at ca. 1.5 V at 25 °C.
Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Ru- and Ir-based materials synthesized by Pechini–Adams method. ► Anode catalysts prepared free from carbon substrate. ► A single 5 cm2 PEM Water electrolysis. ► Good activity of RuxIr1−xO2 anodes towards OER.
