Method for synthesizing high-activity Ni-Mo-Co hydrogen evolution catalyst under acid environment

Abstract

The invention discloses a method for synthesizing high-activity Ni-Mo-Co hydrogen evolution catalyst under the acid environment. The method comprises the following steps: (1) preparing catalyst electroplating liquid; (2) cleaning a substrate; (3) preparing template electrolyte; (4) manufacturing a template; (5) reprocessing the catalyst electroplating liquid; (6) depositing a catalyst. The methodhas the advantages of low cost, simpleness in operation and short period, and the prepared hydrogen evolution catalyst can remarkably reduce hydrogen evolution overpotential and can more remarkably reduce the hydrogen evolution overpotential under the acid environment.

Description

technical field [0001] The invention belongs to the synthesis field of hydrogen evolution catalysts, and in particular relates to a synthesis method of a Ni-Mo-Co catalyst with high hydrogen evolution performance in an acidic environment. Background technique [0002] water (H 2 O) The process of being electrolyzed by direct current to generate hydrogen and oxygen is called electrolysis of water. Current passing through water (H 2 O), a reduction reaction occurs at the cathode to generate hydrogen gas (H 2 ), and at the anode, the oxidation reaction of water to form oxygen (O 2 ). Due to the low energy consumption and low cost, electrolysis of water and hydrogen evolution is an important method to replace hydrogen production by steam reforming and become a new generation of hydrogen fuel. [0003] Although the hydrogen evolution reaction is regarded as the simplest electrochemical reaction, there are still some limiting factors to be improved in the actual hydrogen prod...

AI Technical Summary

Problems solved by technology

[0010] At present, the methods for preparing alloy-based hydrogen evolution catalysts mainly include hydrothermal method and electrodeposition method. The difference in preparation methods and processes will greatly affect the microstructure of the catalyst, and further affect the activity of the catalyst; The other half-reaction of electrolysis, the oxygen evolution reaction, has a relatively high overpotential in an acidic environment. In current industrial applications, in order to reduce production costs, water electrolysis is generally carried out in an alkaline environment. However, in order to adapt to various Due to the needs of industrial production, the current research on "full pH" catalysts is receiving more and more attention. Since many existing hydrogen evolution catalysts are unstable under acidic conditions, during the research process, the activity and stability of the catalysts in acidic environments are important considerations

Images