CPSC46 is a supported iridium catalyst with 46 wt% Ir dispersed on a highly corrosion-resistant TiO₂ support. It is designed primarily as an anodic electrocatalyst for PEM water electrolyzers and other related electrochemical systems, where it promotes the oxygen evolution reaction (OER) for efficient water oxidation to oxygen. The material combines high intrinsic catalytic activity with strong iridium utilization efficiency, enabling high electrode performance while reducing overall precious metal loading.