Abstract
It is critical to design bifunctional nonprecious electrocatalysts with low costs and high efficiency for hydrogen production. Conventional electrocatalysts, on the other hand, frequently exhibit significant overpotential and slow transfer kinetics in both hydrogen and oxygen evolution reactions (HER and OER). Cation doping engineering is believed to be a suitable way to deal with this problem. To accomplish effective water electrolysis, we use a simple vanadium ion doping strategy to prepare 0.5V-NiCoP. In acidic and alkaline environments, the as-synthesized samples show an overpotential of 78.7 and 56.1 mV for the HER at 10 mA cm–2, respectively. In 1 M KOH, it shows an overpotential of 254 mV for the OER at 50 mA cm–2. Furthermore, under a two-electrode alkaline state, the as-obtained products only require 1.67 V (50 mA cm–2) to drive water splitting.