As a hydrogen evolution catalyst, carbon-coated tungsten oxide greatly improves the hydrogen evolution performance of electrolytic water of tungsten oxide in acid media, and shows good electrochemical stability. Wherein, the improvement of the catalytic performance of this kind of catalyst is mainly controlled by Gibbs free energy of hydrogen adsorption of tungsten oxide through carbon coating. Well, what is the mechanism for the enhancement of the electrochemical hydrogen evolution performance of carbon-coated tungsten oxide?
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According to experts, the carbon layer coated on the surface of tungsten oxide has undergone a complex charge transfer process, which effectively improved the Gibbs free energy of hydrogen adsorption and significantly enhanced the electrochemical hydrogen evolution performance of the catalyst. The experimental and theoretical calculation results show that the material has excellent "platinum-like" catalytic properties and has good application prospects. This design idea of carbon-coated metal oxide provides a new way for the development of high-performance non-precious metal hydrogen evolution catalysts.
