Pt–Cu bimetallic electrocatalysts with enhanced catalytic properties for oxygen reduction

A highly active Pt–Cu bimetallic catalyst for the electrocatalytic oxygen reduction reaction, with an average diameter of 2.9 nm and a Cu/Pt ratio of 0.30 for the bimetallic nanoparticles, was prepared by capturing Pt–Cu alloy nanoparticles on melem-modified carbon, followed by removing 90% of copper from the alloy NPs.