Fe-doped Ni2P porous nanofibers as highly efficient electrocatalyst for oxygen evolution reaction

Abstract

Developing a novel oxygen evolution reaction (OER) electrocatalyst with high activity and low-cost is a major challenge for an electrocatalytic water-splitting technology. Herein, Fe-doped Ni2P (Fe-Ni2P) porous nanofibers were fabricated as highly efficient OER electrocatalyst. Benefiting from the abundant and uniformly distributed active sites, optimized electronic structure and high conductivity, and enhanced mass diffusion rates, the obtained Fe-Ni2P porous nanofibers exhibited high OER activity and robust stability. Theoretical calculations demonstrated that the interaction between Fe-Ni2P and the in-situ formed Fe-NiOOH can optimize the concentration of active intermediates and enhance the electron conductivity, further boosting the OER activity.