SO2 toxicity-resistant fuel cell oxygen-reduction nobel metal catalyst and preparation method and application thereof

A noble metal catalyst and fuel cell technology, applied in battery electrodes, circuits, electrical components, etc., can solve problems such as air pollution, Pt catalyzed oxygen reduction reaction activity reduction, etc., to avoid the formation of alloys, improve the anti-SO2 poisoning performance, reduce The effect of competitive adsorption
CN109449449AInactive Publication Date: 2019-03-08HARBIN INST OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HARBIN INST OF TECH
Publication Date
2019-03-08
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a SO2 toxicity-resistant fuel cell oxygen-reduction nobel metal catalyst and preparation method and application thereof. In the SO2 toxicity-resistant fuel cell oxygen-reduction nobel metal catalyst, the absorption energy of a SO2 oxide on Pt is changed by a catalyst metal core modification surface layer Pt electron structure, the competitive absorption with active oxygen-containing particle is reduced, and active sites can be timely released. With the SO2 toxicity-resistant fuel cell oxygen-reduction nobel metal catalyst disclosed by the invention, the toxicity-resistant performance of the catalyst is improved on the basis that the oxygen-reduction activity is not reduced; and compared with commercial Pt / C, the catalyst prepared by the invention has the advantagesthat the SO2 toxicity-resistant performance is obviously improved, and the commercial development of a fuel cell is favorably promoted.
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Description

Technical field

[0001] The present invention relates to the field of fuel cells, and more specifically to an anti-SO 2 A poisoned fuel cell oxygen reduction noble metal catalyst and its preparation method and application. Background technique

[0002] At present, with the increasingly serious environmental problems caused by the burning of coal and other fossil fuels, the research and development of hydrogen energy and fuel cells have received more and more attention from governments and scientific circles around the world. Fuel cells are considered to be a new energy technology that is most likely to replace existing energy sources on a large scale due to its rich and diverse fuel sources, high energy conversion efficiency, and low environmental impact (zero or low emissions). One of the important technical means for energy problems and serious environmental pollution caused by burning fossil energy. The cathode fuel of fuel cells is air, but due to industrial exhaust gas and a...

Claims

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