Preparation method of porous nano flaky nickel phosphide material loaded by multiple substrates

Abstract

The invention discloses a preparation method of a porous nano flaky nickel phosphide material loaded by multiple substrates. The preparation method comprises the following steps: firstly, carrying outultrasonic cleaning on a substrate, putting the substrate into a catalyst solution to carry out loading of an electroless nickel plating catalyst, putting the substrate loaded with the catalyst intoan electroless nickel plating solution to carry out electroless nickel plating, and finally placing phosphorus at the bottom of a crucible, placing the nickel-plated substrate above the phosphorus, covering the crucible with a cover, and putting the crucible in a tubular furnace for phosphating so as to obtain the porous nano flaky nickel phosphide material loaded by the substrate. The method is simple in process, low in cost and short in period. The prepared nickel phosphide / conductive substrate material has high electrocatalytic hydrogen evolution activity in an acidic electrolyte, has verylow overvoltage potential and Tafel slope, has high stability, is good in mechanical property, can be directly used as a hydrogen evolution electrode to assemble an acidic electrolytic cell, and has avery high application value.

Description

technical field [0001] The invention relates to the field of non-noble metal electrocatalytic decomposition of water to produce hydrogen, in particular to a method for preparing a variety of substrate-loaded porous nano-sheet nickel phosphide materials. Background technique [0002] Hydrogen has the advantages of high calorific value, abundant reserves, pollution-free, renewable, and environmentally friendly. It is a new generation of energy carrier that can replace traditional fossil fuels such as coal, oil, and natural gas in the future. Using collected solar energy, wind energy, geothermal energy and other clean energy combined with electrolysis water hydrogen production technology will be the most promising ideal way to produce hydrogen. However, even with this approach, catalysts are needed to achieve efficient water electrolysis for hydrogen production. At present, the most efficient electrocatalysts are precious metal materials such as platinum, whose rare reserves a...

AI Technical Summary

Problems solved by technology

At present, most nickel phosphide hydrogen evolution catalysts cannot meet these requirements. Most of them have cumbersome preparation process, poor stability and poor mechanical properties, which are not conducive to large-scale commercial production.

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