Electronic modulation of carbon-encapsulated NiSe composites via Fe doping for synergistic oxygen evolution.

Fe-Doped NiSe encapsulated in carbon was synthesized by a simple method using a filter paper as the sacrificial support and carbon source, exhibiting remarkable OER performance. Fe doping modulated the electronic property of NiSe and shifted the d-band of the surface Ni atom toward the Fermi level. Together with the good conductivity and porous structure of the filter paper-derived carbon, the composite greatly enhanced the catalytic activity and stability.