Porous tremella-like NiMoP/CoP network electrodes as an efficient electrocatalyst

The design of efficient, stable and cost-effective electrocatalysts for hydrogen evolution reaction holds substantial significance in water electrolysis, but it remains challenging. Tremella-like nickel-molybdenum bimetal phosphide encapsulated cobalt phosphide (NiMoP/CoP) with hierarchical architectures have been effectively synthesized on nickel foam (NF) via a straightforward hydrothermal followed by a low-temperature phosphating method. Based on the unique structural benefits, it significantly increases the number of redox active centers, enhances the electrical conductivity of materials, diminishes ion diffusion path lengths, thereby promoting the efficient electrolyte penetration and reducing the inherent resistance. The as-obtained NiMoP/CoP/NF electrocatalyst exhibited remarkable catalytic activity with a ultralow overpotential of 38 mV (10 mA cm-2) and low Tafel of slope (83 mV dec-1). The straightforward synthesis process and exceptional electrocatalytic properties of NiMoP/CoP/NF demonstrate great potential for HER to replace the precious metal catalyst.