A bionic carbon framework activates the oxygen lattice sites of NiFe2O4 to enhance electrochemical water splitting†

Abstract

A well-designed carbon-supported material enables the promotion of efficient oxygen evolution. Herein, a NiFe₂O₄ catalyst supported by a bionic carbon framework (BCF) was synthesized, and the elements doped into the BCF facilitate electron transfer between oxygen and active metal centers. The as-prepared catalyst exhibits a low overpotential and Tafel slope, and the design approach presented here represents a promising method to design electrocatalysts for water splitting.