Preparation method of electrocatalytic material, corresponding material and use method

Abstract

The invention discloses a preparation method of an electrocatalytic material. The method comprises the following steps: by using foamed nickel as a substrate, sequentially carrying out continuous ultrasonic cleaning with HCl, acetone, ethanol and deionized water, and blow-drying the foamed nickel at room temperature; ultrasonically dispersing a mixed solution of ammonium molybdate tetrahydrate, cobalt nitrate hexahydrate and deionized water into a reaction kettle, keeping the temperature, performing cooling to room temperature, performing cleaning, and blow-drying a sample to obtain a CoMoOx precursor; transferring the cobalt-molybdenum-oxygen precursor sample into a porcelain boat, transferring the porcelain boat into a programmed heating tubular furnace, performing calcining under protective gas, performing cooling to room temperature, and taking out the product to obtain a CoMo / CoMoOx hydrogen evolution electro-catalytic material; according to the method disclosed by the invention,the electro-catalytic hydrogen evolution performance is improved, and the stability is improved; the invention further provides the cobalt-molybdenum oxide hydrogen evolution electro-catalytic material obtained based on the method and a using method of the material.

Description

technical field [0001] The invention belongs to the field of electrocatalytic hydrogen evolution, and in particular relates to a preparation method of an electrocatalytic material, a corresponding material and a method for using the material, in particular to an electrocatalytic material for hydrogen evolution of nanocube rod-shaped cobalt molybdenum oxide based on nickel foam . Background technique [0002] At present, the application of fossil fuels has brought about serious environmental pollution while enabling rapid economic development, so it is urgent to find alternatives to replace fossil fuels. Hydrogen energy stands out from many alternatives due to its high energy density, and the combustion product is only water without any pollution. The transition from a fossil fuel economy to a hydrogen economy requires efficient energy storage technologies that allow clean, sustainable and low-cost production of hydrogen (H 2 ) fuel, conventional routes for large-scale hy...

AI Technical Summary

Problems solved by technology

However, the reported hydrogen evolution performance of non-noble metal catalysts in alkaline environment is still not able to replace noble metal Pt-based materials to realize the commercial application of non-noble metal catalysts. Therefore, it is necessary to find a cheaper way to prepare hydrogen fuel and methods, and the corresponding high-efficiency and low-cost hydrogen electrocatalytic materials are an exploration direction

Images