AuIr alloy with arbitrarily adjustable lattice parameters as a highly efficient electrocatalyst for the oxygen reduction reaction

Abstract

AuIr alloy nanoparticles were successfully prepared without using surfactants for the first time despite Au and Ir being immiscible according to phase diagrams. The lattice parameters of the AuIr alloy can be adjusted arbitrarily. The oxygen reduction reaction (ORR) activity of Au₅Ir₅ alloy is better than that of Au or Ir, and the oxygen evolution reaction (OER) activity of the Au₅Ir₅ alloy is as good as that of Ir in alkaline solution.