Preparation method of efficient nickel nitride hydrogen evolution electrodes

• Main Authors: SHI XIAO, YANG HUIDONG, LIU WENNA, YE YUMIN
• Format: Patent
• Language: Chinese; English
• Published: 26.07.2019
• Subjects: APPARATUS THEREFOR; CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DIFFUSION TREATMENT OF METALLIC MATERIAL; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTIONOF COMPOUNDS OR NON-METALS; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; METALLURGY; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION

The invention discloses a preparation method of efficient nickel nitride hydrogen evolution electrodes. The method includes: pretreating a nickel matrix; performing an ion nitriding process; placing nickel foam pretreated in an ion nitriding furnace for nitrogen treatment to obtain the nickel nitride hydrogen evolution electrodes, wherein the electrodes are supported by three-dimensional porous nickel foam. The nickel nitride directly grows on the nickel foam to form the supported electrodes, and overpotential can be reduced; large specific surface area is large, the contact area with a solution is enlarged, and the catalytic efficiency is improved; hydrogen evolution overpotential of the efficient nickel nitride hydrogen evolution electrodes is lowered, the performance of electrocatalytichydrogen evolution is improved, good stability of the electrodes is achieved, and energy consumption is reduced; the preparation method is simple in process and simple in operation, and the efficientnickel nitride hydrogen e