PEM electrolyzed water catalyst as well as preparation method and application thereof

Abstract

The invention discloses a catalyst which comprises a carrier and noble metal oxide particles uniformly loaded on the surface of the carrier. The invention also discloses a preparation method of the catalyst and application of the catalyst in an electrolytic water oxygen evolution reaction electrode in an acid medium. The catalyst provided by the invention has excellent acidic oxygen evolution activity and stability, greatly reduces the dosage of noble metal, and is superior to a commercial noble metal catalyst.

Description

A kind of PEM electrolysis water catalyst, its preparation method and use technical field The invention belongs to material field, be specifically related to a kind of noble metal oxide catalysis of acid-resistant carrier load particle size controllable The invention discloses an agent, its preparation method and its use as an electrode material in the reaction of acid PEM electrolysis of water and oxygen evolution. Background technique Facing the optimization of energy structure, the implementation of global sustainable development strategy; Exhausted fossil energy makes the development of renewable energy such as wind energy, hydro energy, geothermal energy imminent. Due to the abundant sources of hydrogen energy, High thermal efficiency and cleanliness are seen as the most ideal choice to replace fossil fuels. In the hydrogen energy industry, the use of renewable energy The hydrogen produced from the source is called "green hydrogen". Only by vigorously develop...

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Problems solved by technology

[0003] Compared with the hydrogen evolution reaction, the oxygen evolution reaction is a four-electron transfer process, which has a high reaction energy barrier formed from singlet reactants to triplet oxygen products, so the oxygen evolution reaction with slow kinetics severely restricts the efficiency of hydrogen production

In addition, under the harsh operating conditions of acidity and strong oxidation potential, most oxygen evolution catalyst electrodes are difficult to withstand such double corrosion conditions, so the choice of anode catalysts is very limited, among which IrO 2 or RuO 2 etc. are still the best commercial catalyst powders at present, but their large-scale application is hindered due to the high price and scarce reserves of precious metals.

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