Preparation method based on ptaufe/c composite hydrogen evolution catalyst in sulfuric acid electrolyte

Abstract

The invention discloses a preparation method of PtAuFe / C composite hydrogen evolution catalyst based on a sulfuric acid (H2SO4) electrolyte. The method comprises the following steps: 1), taking and mixing a certain amount of platinochloric acid (H2PtCl6) solutions, chlorauric acid (HAuCl4) solutions and ferrous chloride (FeCl2); then adding an excessive amount of sodium borohydride (NaBH4) solutions with concentration of 0.5 mol.L<-1>, standing for several hours to ensure complete reaction to prepare a PtAuFe mixed solution; 2), carrying out ultrasonic operation on the mixed solution; 3), putting the mixed solution into a centrifuge tube for centrifugation; 4), putting a centrifugal product into a baking oven for drying to obtain PtAuFe metal powder; 5), ultrasonically mixing the PtAuFe powder with a certain amount of carbon powder in isopropyl alcohol to obtain a PtAuFe / C hydrogen evolution catalyst. The PtAuFe / C hydrogen evolution catalyst prepared by the invention has preferable electrochemical activity and stability, so that the hydrogen evolution reaction efficiency can be improved, and the cycle service life can be greatly prolonged.

Description

technical field [0001] The present invention relates to a kind of preparation method of PtAuFe / C hydrogen evolution catalyst, particularly a kind of in sulfuric acid (H 2 SO 4 ) Preparation method of PtAuFe / C hydrogen evolution catalyst in electrolyte. Background technique [0002] As one of the three pillars of modern society, energy plays an important role in social development. However, with the development of the economy, the extensive use of fossil fuels by human beings not only results in the reduction of non-renewable energy until it is exhausted. Moreover, in the process of burning fossil fuels, a large amount of polluting gases, such as NO x , CO x , SO x The formation of acid rain and the greenhouse effect endanger the environment. Therefore, people gradually realize the importance of finding clean energy. The clean energy discovered in recent years mainly includes solar energy, hydrogen energy, wind energy, ocean energy, and geothermal energy. Among them, ...

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Problems solved by technology

However, in the process of electrolyzing water, due to the existence of overpotential, the voltage required for electrolysis will increase, which will greatly increase the required energy consumption. Therefore, it is very necessary to study high-performance catalysts that can significantly reduce overpotential.

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