Facile oxidation-dehydration reaction-driven robust porous copper oxide nanobelt coating on copper foam for energy-saving and low-cost urea oxidization reaction

We fabricated a robust porous copper oxide nanobelt coating on copper foam by a facile oxidation-dehydration reaction, which is firstly reported as a low-cost pure copper-based urea oxidization catalyst. This catalyst has enriched electrochemical active surface area, abudant nanopores and micropores for gas and electrolyte diffusion, highly conductivity from copper foam for electron transfer and herein shows superiour UOR performance, outperforming noble metal catalysts or most of as-reported non precious metal UOR catalysts especially at high current density.