Electrodeposition of High-Surface-Area IrO₂ Films on Ti Felt as an Efficient Catalyst for the Oxygen Evolution Reaction.

ABSTRACT: Under acidic conditions, IrO₂ exhibits high catalytic activity with respect to the oxygen evolution reaction (OER). However, the practical application of Ir-based catalysts is significantly limited owing to their high cost in addition to the scarcity of the metal. Therefore, it is necessary to improve the efficiency of the utilization of such catalysts. In this study, IrO₂-coated Ti felt (IrO₂/Ti) electrodes were prepared as high-efficiency catalysts for the OER under acidic conditions. By controlling the surface roughness of the Ti substrate via wet etching, the optimum Ti substrate surface area for application in the IrO₂/Ti electrode was determined. Additionally, the IrO₂ film that was electrodeposited on the 30 min etched Ti felt h

SUBMITTER: Park YJ 

PROVIDER: S-EPMC7645052 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature