Hydrothermal Phosphating Treatment of Nano-Needled N-Nicop@Nf as an Efficient Electrocatalyst

Transition metal phosphide (TMP) has attracted great interest due to its low cost, simple preparation method and high electrical conductivity, and has a wide range of applications in the field of electrocatalytic HER. Sea urchin-like NiCoP was obtained by hydrothermal-phosphorylation method, and on this basis, nano-needle-like N-NiCoP@NF was successfully constructed by a three-step hydrothermal-phosphorylation-CVD method, which exhibited excellent electrochemical properties. At the current density of 10 mA cm-2, the overpotential is 75 mV; after 5000 cycles, the electrocatalytic activity does not decay significantly, showing good catalytic activity and stability. The nano-needle structure increases the specific surface area and makes it possess excellent electrocatalytic performance. Therefore, this work proposes a low-sink cost controllable strategy for the preparation of nickel-cobalt bimetallic phosphides using a three-step hydrothermal-phosphorylation-CVD method to prepare an electrocatalyst with excellent electrocatalytic performance.