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In Situ Construction of Nickel Phosphosulfide (Ni 5 P 4 |S) Active Species on 3D Ni Foam through Chemical Vapor Deposition for Electrochemical Hydrogen Evolution
Author(s) -
Lin Yan,
Pan Yuan,
Zhang Jun
Publication year - 2017
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.201600808
Subject(s) - phosphide , nickel , catalysis , materials science , chemical vapor deposition , chemical engineering , flue gas desulfurization , electrochemistry , substrate (aquarium) , active site , sulfur , inorganic chemistry , electrode , nanotechnology , chemistry , metallurgy , organic chemistry , oceanography , geology , engineering
The construction of efficient and robust nickel‐phosphide‐based catalysts for the hydrogen evolution reaction (HER) is still challenging. Previous research demonstrates that surface modification using sulfur atoms is an efficient strategy to improve the hydro‐desulfurization performance, owing to the formation of a phosphosulfide phase. Herein, an in situ construction strategy of nickel phosphosulfide (Ni 5 P 4 |S) active species on 3D Ni foam through a chemical vapor deposition reaction is described. The sulfuration and phosphorization temperature, as well as the P/S molar ratio, affect the active‐phase structure and the electrocatalytic performance toward the HER. The as‐synthesized NiPS‐500 (P/S=1:1) catalyst exhibits excellent electrocatalytic activity and stability in both acidic and basic conditions, owing to the formation of a nickel phosphosulfide phase, the high conductivity, and the 3D macroporous structure of the Ni foam substrate. The produced Ni 5 P 4 |S active species is not only the most active HDS site, but also the actual active species for efficiently catalyzing the HER. This achievement provides a novel and effective route to design a high‐performance, low‐cost catalyst with a facile synthesis for large‐scale water splitting.