Explorations of Heteroatom Doping in Modulating the Two-electron Selectivity of M-N-C Catalysts for Oxygen Reduction Reaction

Abstract

Developing efficient electrocatalysts for hydrogen peroxide (H2O2) electrosynthesis is of paramount importance in sustainable chemistry. Herein, we identify a pyrrole-type NiN3C1 configuration as the optimal candidate that exhibits a negligible 0.02V overpotential, where unique pyrrole coordination facilitates proximal oxygen protonation to suppress O-O bond cleavage and enhance 2e- selectivity.