NANO ELECTROCATALYST OF GOLD-NICKEL-SULFIDE CORE-SHELL STRUCTURE AND PREPARATION METHOD THEREFOR

摘要

A method for preparing an electrocatalyst, comprising the following steps: providing a gold source, dissolving said gold source in a ligand solution, and carrying out a mixing treatment to form a precursor solution of gold and the ligand; carrying out a first heating reaction on the precursor solution under an inert atmosphere; after a reaction system subjected to the first heating reaction is subject to a cooling treatment, adding a nickel salt, and mixing to obtain a first mixed solution; carrying out a second heating reaction on the first mixed solution under the inert atmosphere; after the reaction system subjected to the second heating reaction is subject to a cooling treatment, adding a sulfur source, and mixing to obtain a second mixed solution; carrying out a third heating reaction on the second mixed solution under the inert atmosphere, and performing an extraction and purification treatment to obtain a nano electrocatalyst of a gold-nickel-sulfide core-shell structure.