An efficient multifunctional hybrid electrocatalyst: Ni2P nanoparticles on MOF-derived Co,N-doped porous carbon polyhedrons for oxygen reduction and water splitting

Abstract

Ni₂P nanoparticles anchored on MOF-derived Co,N-doped porous carbon polyhedrons (Ni₂P/CoN–PCP) were successfully prepared. The Ni₂P/CoN–PCP catalyst shows excellent trifunctional electrocatalytic performances for the oxygen reduction, oxygen evolution, and hydrogen evolution reactions, attributed to the synergistic effect between active Ni₂P nanoparticles and the CoN–PCP support with rich Co–N_x centres, abundant defects and high conductivity. This work demonstrates a superior low-cost electrocatalyst for potential application in fuel cells and water splitting devices.