Oxygen-enriched vacancy tungsten oxide supported catalyst and preparation method thereof

Abstract

The invention discloses an oxygen-enriched vacancy tungsten oxide supported catalyst and a preparation method thereof, and belongs to the field of fuel cell catalyst synthesis and application. The method comprises the steps of preparing an oxygen-enriched vacancy tungsten oxide carrier with a mesoporous structure by a solvothermal method; dispersing the oxygen-enriched vacancy tungsten oxide carrier into a transition metal salt solution; regulating pH to neutral, stirring to enable transition metal salt to be uniformly adsorbed on the oxygen-enriched vacancy tungsten oxide carrier, then addinga reducing agent for reduction treatment, and finally partially oxidizing the transition metal by adopting a method of annealing in air to prepare the oxygen-enriched vacancy tungsten oxide supportedcatalyst, wherein the transition metal salt is one or more of nickel salt, cobalt salt or ruthenium salt. The reaction process is simple, efficient, easy to control and high in yield, and the prepared catalyst has good hydrogen evolution performance and excellent stability.

Description

Technical field [0001] The invention relates to the technical field of fuel cell catalyst preparation, and more specifically, to an oxygen-rich vacancy tungsten oxide supported catalyst and a preparation method thereof. Background technique [0002] With the gradual increase in the consumption of fossil fuels and the decrease in reserves year by year, environmental problems and energy crises have caused mankind to pay more and more attention to environmental protection, and the urgency of people to develop green and renewable energy is increasing. Therefore, it is necessary to find renewable clean energy to replace traditional fossil energy. Widespread use of hydrogen has the potential to reduce dependence on fossil fuels and benefit the environment by reducing greenhouse gas emissions. Electrocatalytic water splitting hydrogen production (HER) seems to be one of the cleanest and most sustainable methods for large-scale hydrogen production. In practical applications, an efficie...

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Problems solved by technology

However, the consumption of pure ruthenium catalyst is not much different from that of platinum, and the hydrogen evolution overpotential is also larger than that of platinum, which is not conducive to its commercial development.

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