Elevating the d-Band Center of NiS Nanosheets by Fe Incorporation to Boost the Oxygen Evolution Reaction.

Many attempts have been made to enhance the relatively poor electrochemical activity of NiS for the oxygen evolution reaction (OER) by elevating the d-band center. Unfortunately, only limited success has been encountered thus far. Owning to the lower electronegativity and one less 3d electron relative to Ni, Fe shows great potentials in upshifting the overall d-band center of NiS when incorporating into its crystal structures.

Rational design of atomically dispersed nickel active sites in β-MoC for the hydrogen evolution reaction at all pH values.

Atomically dispersed Ni species on β-Mo2C (Ni/β-Mo2C) is designed and synthesized through a simple thermal treatment process. Benefitting from the synergistic effect between Ni species and β-Mo2C, Ni/β-Mo2C exhibits high activities for the HER at all pH values.