Tungsten nitride decorated carbon nanotubes hybrid as efficient catalyst supports for oxygen reduction reaction

The CV curves for the prepared catalysts in 0.1 mol L−1 HClO4 aqueous solutions, and the half way potential E1/2 of Pt-WN/CNTs-M positively shifts approximately 30 mV compared to Pt/CNTs-M, indicating the oxygen reduction process is more favorable on Pt-WN/CNTs-M than that on Pt/CNTs-M.