In situ studies of the cathodic stability of single-crystalline IrO₂(110) ultrathin films supported on RuO₂(110)/Ru(0001) in an acidic environment

Abstract

We investigate with in situ surface X-ray diffraction (SXRD) and X-ray reflectivity experiments (XRR) the cathodic stability of an ultrathin single-crystalline IrO2(110) film with a regular array of mesoscopic rooflike...

In Situ and Operando X-ray Scattering Methods in Electrochemistry and Electrocatalysis

“…Electroreduction of Iridium and Ruthenium oxides under HER conditions was thoroughly studied by XRD and SXRD on polycrystalline thermally prepared RuO 2 and IrO 2 , and on ultrathin RuO 2 (110)/Ru­(0001) and IrO 2 (110)/TiO 2 (110) films, − respectively. According to Pourbaix diagrams, both metals should first reduce to a hydroxide phase and then further reduce to their metallic phase under HER conditions .…”