A graphene–MnO2 framework as a new generation of three-dimensional oxygen evolution promoter

Abstract

A three-dimensional framework promoter of graphene–MnO₂ was fabricated to enhance the catalytic properties of NiCo₂O₄. The as-resultant graphene–MnO₂–NiCo₂O₄ hybrid material features a number of remarkable structural properties such as well-developed pores, 3D conductive networks and strong coupling synergistic effects, rendering it an outstanding catalyst for electrocatalytic oxygen evolution.