Electrodeposited NiCu Alloy Anchored Co2P Nanowires Enhancing Hydrogen Evolution Reaction by Modulating Electronic Structure
The development of efficient and stable hydrogen evolution reaction(HER)is the key to realize the widespread industrial application of electrolytic water technology.In this paper,HER catalysts CuAl@Co2P/NF with three-dimensional highly dispersed non-homogeneous phase were synthesized by hydrothermal-pyrolysis-electrodepo-sition using nickel foam(NF)as substrate.The formation of heterojunction between crystalline and amorphous surfaces increases the active sites of the catalyst itself,and the synergistic effect between the elements makes the Co atoms in the system rearrange their electrons outside the nucleus,reducing the adsorption capacity for the adsorbed H*,and accelerating the reaction kinetics in the process of hydrogen precipitation reaction.The catalyst exhibited favorable HER activity and stability in both alkaline and acidic environments,and the overpotential required to drive a current of 10 mA/cm2 was measured at 83 and 27 mV,respectively,while the potential remained essentially unchanged after continuous operation for 72 h in an alkaline environment.This work is informative for the construc-tion of HER catalysts with highly dispersed non-homogeneous phase pairs.
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