Preparation of Hollow CeO₂/CePO₄ with Nitrogen and Phosphorus Co‐Doped Carbon Shells for Enhanced Oxygen Reduction Reaction Catalytic Activity

Abstract

Abstract Achieving active and sustainable electrocatalysts for the oxygen reduction reaction with low cost and high performance attracts great interest in the field of fuel cells. Here, we report a facile route to prepare hollow CeO 2 /CePO 4 @N,P co‐doped carbon by pyrolyzing CeO 2 @polyaniline obtained in the presence of phytic acid. By virtue of the co‐doping of N and P elements as well as the existence of oxygen vacancies and the formation of a void, the product illustrated excellent catalytic activity towards the oxygen reduction reaction with onset and half‐wave potentials of 0.918 and 0.822 V, respectively, and a current density of 4.38 mA cm −2 at 0.565 V vs. RHE. Furthermore, it presented high durability and strong methanol tolerance, revealing its great potential for applications in energy conversion.