Preparation method of molybdenum-oxide-based efficient catalyst for electrocatalytic hydrogen evolution

Abstract

The invention belongs to the technical field of preparation of catalysts for electrocatalytic hydrogen evolution and discloses a preparation method of a molybdenum-oxide-based efficient catalyst for electrocatalytic hydrogen evolution. Substoichiometric molybdenum oxide is prepared; the molybdenum oxide and a chloroplatinic acid solution are subjected to magnetic stirring to react for 1-5 h, carbon black is added to a reaction liquid, the mixture is subjected to uniform ultrasonic dispersion and dried, and the molybdenum-oxide-based efficient catalyst for electrocatalytic hydrogen evolution is obtained, wherein platinum contained in the chloroplatinic acid solution accounts for 1%-10% by mass of molybdenum oxide, and the mass ratio of molybdenum to the carbon black added later is (1:9)-(9:1). A traditional platinum supporting method is broken through, platinum deposition is realized in a lightproof environment, the platinum is composited with the carbon black, accordingly, the high utilization rate of platinum atoms is guaranteed, raw materials are rich, and the preparation technique is environment-friendly and pollution-free.

Description

technical field [0001] The invention belongs to the technical field of preparation of electrocatalytic hydrogen evolution catalysts, and in particular relates to a preparation method of molybdenum oxide-based high-efficiency electrocatalytic hydrogen evolution catalysts. Background technique [0002] Hydrogen is a clean new energy, and its by-product after consumption is water, which is non-polluting to the environment, and is currently one of the ideal new energy sources to replace fossil fuels. The main methods of hydrogen production are divided into electrocatalytic hydrogen production and photocatalytic hydrogen production. From the perspective of practical application, electrocatalytic hydrogen production has high efficiency and is easy to implement. However, the efficiency of electrocatalytic hydrogen evolution depends on the selection of electrocatalysts. At present, the commercial high-efficiency catalysts are still based on platinum-carbon catalysts, but the utiliza...

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Problems solved by technology

However, the efficiency of electrocatalytic hydrogen evolution depends on the selection of electrocatalysts. At present, the commercial high-efficiency catalysts are still based on platinum-carbon catalysts, but the utilization efficiency of platinum is low.

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