▎ 摘　　要

NOVELTY - Load type iridium-ruthenium alloy nanosheet catalyst comprises a carrier and iridium-ruthenium alloy nano sheet loaded on the carrier, the thickness of the iridium-ruthenium alloy nano sheet is 0.6-1.5 nm, and the molar ratio of iridium and ruthenium in the iridium-ruthenium alloy nano sheet is 9:1-3:1. USE - The alloy nanosheet catalyst is used in electrocatalysis oxygen evolution reaction (claimed). ADVANTAGE - The method has simple technique and good universality. The catalyst has excellent electrocatalysis oxygen evolution reaction performance in acid and alkaline electrolyte. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparation method of load type iridium-ruthenium alloy nanosheet catalyst.