Nickel-and-molybdenum based bimetallic carbide loaded on nickel foam and preparation method and application thereof

Abstract

The invention discloses a nickel-and-molybdenum based bimetallic carbide loaded on nickel foam and a preparation method and application thereof. Nickel nitrate and ammonium molybdate are adopted as a nickel source and a molybdenum source correspondingly, glucose is adopted as a carbon source, and the bimetallic carbide Mo6Ni6C is grown on the surface of the nickel foam in situ through a hydrothermal and high-temperature carburizing method. The method is easy and convenient to implement, the raw materials are easy to obtain, the preparation cost is low, the reaction period is short, and repeatability is high. The material has the excellent hydrogen evolution performance in the field of electrocatalytic decomposition of water. When the overpotential of hydrogen evolution is -51 mV in an acid electrolyte solution, the electric current density can reach 8-12 mA / cm<2> and is not decreased obviously under the stable work for more than 200 hours; and at the same time, when the overpotential of hydrogen evolution is -34 mV in an alkali electrolyte solution, the electric current density can also reach 8-12 mA / cm<2> and is not decreased obviously under the stable work for more than 300 hours. The nickel-and-molybdenum based bimetallic carbide loaded on the nickel foam not only can be directly used as a working electrode of electrocatalytic hydrogen evolution, but also can be used in the fields of the chlor-alkali industry, the water electrolysis process, solar energy water electrolysis and hydrogen manufacturing and the like.

Description

Technical field [0001] The invention belongs to a nickel-molybdenum-based bimetallic carbide nanomaterial loaded on nickel foam. The material is prepared by hydrothermal and high-temperature carburization methods. It has excellent performance in electrocatalytic hydrogen evolution and can also be used in other fields of energy development and environmental protection. Has potential application value. Background technique [0002] Energy issues have been one of the ten major issues faced by human development in the past fifty years. Energy is the material basis of human activities. The development of human society is inseparable from the emergence of high-quality energy and the use of advanced energy technology. At the same time, the environmental issue ranked fourth cannot be underestimated. At present, traditional energy sources such as coal, oil, and natural gas still play a decisive role in global energy. However, the reserves of these resources on the earth are very lim...

AI Technical Summary

Problems solved by technology

Hydrogen production by electrolysis of water is one of the most promising and cleanest hydrogen production methods. However, due to the high overpotential of hydrogen evolution, the energy consumption increases, so the development of highly active hydrogen evolution materials to improve hydrogen production efficiency is the current research topic. cutting-edge hot issues

The traditional ideal electrode material that can effectively reduce the hydrogen evolution overpotential is mainly the noble metal Pt, but the storage content of Pt on the earth is very low, and the price is too expensive to achieve large-scale promotion.

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