Preparation method and application of alpha-nickel sulfide/graphene composite material

• Main Authors: WU HUAPING, ZHAO LI, LIU AIPING, ZHANG JUNMA
• Format: Patent
• Language: Chinese; English
• Published: 11.05.2016
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The invention discloses a preparation method of an alpha-nickel sulfide/graphene composite material and application thereof as an electrochemical hydrogen evolution catalyst. The alpha-nickel sulfide/graphene composite material is mainly synthesized by virtue of a one-step hydrothermal method, ultrasonically dispersed and then modified onto a glassy carbon electrode to obtain an alpha-nickel sulfide/graphene composite material modified electrode. The alpha-nickel sulfide/graphene composite material modified electrode is mainly applied to electrochemical hydrogen evolution. The catalytic activity of the synthesized alpha-nickel sulfide/graphene composite material is detected by adopting a linear scanning curve (polarized curve), and a cycling voltage-current curve is used for testing the stability of the alpha-nickel sulfide/graphene composite material. By adequately utilizing the synergism of the alpha-nickel sulfide nano particles and graphene in the alpha-nickel sulfide/graphene composite material, the cata