One-step coating of commercial Ni nanoparticles with a Ni, N-co-doped carbon shell towards efficient electrocatalysts for CO reduction.

Commercial nickel nanoparticles (Ni NPs) were directly converted to efficient electrocatalysts for CO reduction by urea-Ni solid powder pyrolysis, in which a Ni, N-co-doped graphite carbon shell wraps the Ni NPs in situ. 98.3% CO selectivity was realized with a current density of -20.2 mA cm and an overpotential of 0.69 V.