Carbon-coated iridium dioxide electrolytic water hydrogen production catalyst, and preparation method and application thereof

Abstract

The present application relates to the technical field of hydrogen production catalyst for water electrolysis, in particular to a carbon-coated iridium dioxide hydrogen production catalyst for water electrolysis, a preparation method and application thereof, wherein the preparation method of the carbon-coated iridium dioxide hydrogen production catalyst for water electrolysis comprises the following steps: preparing a carbon-coated iridium dioxide precursor powder by using iridium compounds, carboxyl carbon compounds and an oxidizing agent, then performing a calcination oxidation reaction, immediately performing a rapid cooling treatment after the calcination is completed to obtain an initial catalyst, and finally obtaining the carbon-coated iridium dioxide hydrogen production catalyst for water electrolysis by washing, filtering and heating drying. The prepared catalyst has excellent electrocatalytic activity and stability, and the catalyst crystal has a microporous structure and a high specific surface area. The nano structure with a high specific surface area is beneficial to further improving the catalytic activity, and the catalyst load of Ir is reduced while ensuring the catalytic activity, thereby significantly reducing the cost. The catalyst has a good application prospect in the hydrogen evolution and oxygen evolution reactions of water electrolysis.