Preparation method of electrocatalyst with multiple defects and active sites

Abstract

The invention relates to a preparation method of an electrocatalyst, in particular to a preparation method of an electrocatalyst with multiple defects and active sites, and aims to solve the problemsof expensive noble metal catalysis price, rare reserves, low electrocatalytic efficiency in electrocatalytic decomposition of water, poor stability after long-time use and complex preparation of electrodes by using a powder type electrocatalyst in the field of hydrogen production by water electrolysis. The method comprises the following steps: 1, stirring and dissolving metal salt, ammonium fluoride and urea in deionized water to obtain a mixed solution; 2, dipping a conductive substrate in the mixed solution, and carrying out a heat preservation reaction to obtain the conductive substrate onwhich a precursor grows; and 3, putting a reaction source and the conductive substrate on which the precursor grows into a chemical vapor deposition device to react, thereby completing the preparationmethod of the electrocatalyst with multiple defects and active sites.

Description

technical field [0001] The invention relates to a preparation method of an electrocatalyst. Background technique [0002] Currently, electrocatalytic water splitting is a clean, pollution-free, and scalable method for producing high-purity hydrogen. In order to overcome the huge energy barrier in the process of electrocatalytic water splitting, highly efficient electrocatalysts are often needed to reduce the overpotential of the hydrogen evolution reaction and oxygen evolution reaction, thereby reducing the total decomposition voltage of the entire reaction system, in order to achieve lower energy consumption. Efficient production of hydrogen under these conditions. However, the catalysts traditionally used for electrocatalytic water splitting are often Pt, RuO 2 , IrO 2 etc. It has problems such as high price and scarce reserves. At the same time, the use of different electrocatalysts on both sides of the cathode and anode in the electrocatalytic water splitting is ofte...

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Problems solved by technology

[0003] The present invention aims to solve the problems in the field of hydrogen production by electrolysis of water, such as expensive noble metal catalysis, scarce reserves, low electrocatalysis efficiency in electrocatalytic decomposition of water, poor stability in long-term use, and complicated preparation of electrodes by using powder type electrocatalysts, and provides a multi- Preparation of electrocatalysts with defects and active sites

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