▎ 摘　　要

NOVELTY - Preparing nickel disulfide- molybdenum disulfide/ poly(1-vinyl-3-ethylimidazolium bromide/polypyrrole/graphene oxide (PVEIB/PPy/GO) nanosheets comprises (i) performing in situ chemical polymerization of pyrrole on graphene oxide nanosheets under ultrasonic irradiation to obtain polypyrrole/graphene oxide nanosheets, (ii) performing in-situ polymerization of 1-vinyl-3-ethylimidazolium bromide on polypyrrole/graphene oxide nanosheets under the condition of heating in oil bath to obtain poly(1-vinyl-3-ethylimidazolium bromide/polypyrrole/graphene oxide (PVEIB/PPy/GO) nanosheets , (iii) dispersing poly(1-vinyl-3-ethylimidazolium bromide/polypyrrole/graphene oxide (PVEIB/PPy/GO) nanosheets in water, adding ammonium heptamolybdate tetrahydrate, nickel(II) chloride and thioacetamide, stirring, subjecting reaction system to a hydrothermal reaction, and washing successively with distilled water and ethanol, centrifuging and vacuum drying. USE - The hydrogen evolution reaction electrocatalytic modified electrode based on nickel disulfide- molybdenum disulfide/ poly(1-vinyl-3-ethylimidazolium bromide/polypyrrole/graphene oxide material for electrocatalytic decomposition of water (claimed). ADVANTAGE - The method utilizes poly(1-vinyl-3-ethylimidazolium bromide/polypyrrole/graphene oxide -based composite nanomaterials which promotes electron transport of HER and increases the rate of reaction of water decomposition, and shows a lower overpotential. The nanomaterial modified electrode exhibits high electrochemical activity and good stability in water decomposition and hydrogen production. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) preparing hydrogen evolution reaction electrocatalytic modified electrode based on nickel disulfide- molybdenum disulfide/ poly(1-vinyl-3-ethylimidazolium bromide/polypyrrole/graphene oxide (PVEIB/PPy/GO) nanosheets, comprises (i) ultrasonically dispersing nickel disulfide- molybdenum disulfide/ poly(1-vinyl-3-ethylimidazolium bromide/polypyrrole/graphene oxide (PVEIB/PPy/GO) nanosheets in absolute ethanol to obtain a uniform dispersion of the composite modifier, and (ii) applying a uniform dispersion of the composite modifier onto the surface of a clean glassy carbon electrode, drying at room temperature to obtain glassy carbon electrode modified nickel disulfide- molybdenum disulfide/ poly(1-vinyl-3-ethylimidazolium bromide/polypyrrole/graphene oxide; (2) HER electrocatalytic modified electrode based on a nickel disulfide- molybdenum disulfide/ poly(1-vinyl-3-ethylimidazolium bromide/polypyrrole/graphene oxide material, comprising taking glassy carbon electrode a base electrode, and the nickel disulfide- molybdenum disulfide/ poly(1-vinyl-3-ethylimidazolium bromide , attaching polypyrrole /graphene oxide material to nickel disulfide- molybdenum disulfide/ poly(1-vinyl-3-ethylimidazolium bromide/polypyrrole/graphene oxide modified glassy carbon electrode prepared on a glassy carbon electrode; (3) use of a HER electrocatalytic modified electrode based on nickel disulfide- molybdenum disulfide/ poly(1-vinyl-3-ethylimidazolium bromide/polypyrrole/graphene oxide material for electrocatalytic decomposition of water; and (4) Used method electrocatalytic modified electrode based on nickel disulfide- molybdenum disulfide/ poly(1-vinyl-3-ethylimidazolium bromide/polypyrrole/graphene oxide material as a working electrode, the silver / silver chloride electrode electrode is a reference electrode, platinum electrode is an auxiliary electrode, forming a three-electrode system and electrocatalysis of water in 0.5M aqueous sulfuric acid solution.