Enhancing Hydrogen Evolution Electrocatalytic Performance in Neutral Media via Nitrogen and Iron Phosphide Interactions

It remains a challenge to develop efficient electrocatalysts in neutral media for hydrogen evolution reaction (HER) due the sluggish kinetics and switch of rate determining step. Although metal phosphides are widely used HER catalysts, their structural stability is an issue oxidization, performance requires improvement. Herein, new material, i.e., grapevine-shaped N-doped iron phosphide on carbon nanotubes, as catalyst developed. The optimized shows overpotential 256 mV at large current density 65 mA cm−2, which even 10 lower than that commercial 20% Pt/C catalyst. excellent further studied by combined computational experimental techniques, proves interaction between nitrogen can provide more active structures stabilize HER.