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Nanometer platinum-copper alloy catalytic material for electrolysis of water

A technology of platinum-copper alloys and catalytic materials, which is applied in metal/metal oxide/metal hydroxide catalysts, catalyst activation/preparation, physical/chemical process catalysts, etc., and can solve the problems of expensive precious metals and inability to use them on a large scale , to achieve the effect of many active sites, small size and large aspect ratio

Inactive Publication Date: 2017-02-01
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, most electrodes have not been widely used in actual production due to the high energy consumption caused by high hydrogen evolution overpotential. Therefore, it is of great significance to prepare electrode materials with excellent performance and low hydrogen evolution overpotential.
[0003] So far, noble metals such as Pt and Pd are still the best hydrogen evolution catalysts, but noble metals are expensive and cannot be used on a large scale in industrial production

Method used

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  • Nanometer platinum-copper alloy catalytic material for electrolysis of water
  • Nanometer platinum-copper alloy catalytic material for electrolysis of water
  • Nanometer platinum-copper alloy catalytic material for electrolysis of water

Examples

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Embodiment approach

[0031] A nano-sized platinum-copper alloy electrolytic water catalytic material, the nano-sized platinum-copper alloy electrolytic water catalytic material is a platinum-copper alloy nanoparticle / carbon nanofiber hybrid material, which is prepared by the following steps:

[0032] (1) Put the solvent into the container, then slowly add the polymer, stir continuously until it is completely dissolved, then add the water-soluble platinum source and water-soluble copper source, stir and mix evenly, and prepare the precursor solution; The mass concentration of each component in the precursor solution is as follows: high molecular polymer 8-20%, platinum source 1-50%, copper source 1-50%, solvent balance; the solvent is deionized water or DMF . Preferably, the mass concentration of each component in the precursor solution is as follows: high molecular polymer 8-20%, platinum source 10-30%, copper source 10-30%, solvent balance; the solvent is deionized water or DMF. The high molecu...

Embodiment 1

[0037] Dissolve polyvinyl alcohol (PVA) powder in deionized water to make an aqueous solution with a mass concentration of 12%, then slowly add copper chloride and chloroplatinic acid to the above solution, and keep stirring until the solution is evenly mixed. A precursor solution was obtained, and the mass concentration of each component in the precursor solution was as follows: 12% polyvinyl alcohol, 25% chloroplatinic acid, 5% copper chloride, and the balance of deionized water. Move the prepared precursor solution to a 10mL syringe, and fix the syringe on the electrospinning syringe pump. The needle of the syringe is connected to the positive pole of the high-voltage direct current power supply, and the collecting plate covered with aluminum foil is connected to the negative pole of the high-voltage direct current power supply. Adjust the distance between the collection plate and the needle to 12 cm, the injection speed of the syringe pump to 0.3 mL / h (flow rate), set the p...

Embodiment 2

[0039]Dissolve polyacrylonitrile (PAN) powder in N,N-dimethylformamide solution, then slowly add copper chloride and chloroplatinic acid into the above solution, and keep stirring until the solution is evenly mixed to obtain the precursor The mass concentration of each component in the precursor solution is as follows: 10% polyacrylonitrile, 25% chloroplatinic acid, 5% copper chloride, and the balance of N,N-dimethylformamide. Move the prepared precursor solution to a 10mL syringe, and fix the syringe on the electrospinning syringe pump. The needle of the syringe is connected to the positive pole of the high-voltage direct current power supply, and the collecting plate covered with aluminum foil is connected to the negative pole of the high-voltage direct current power supply. Adjust the distance between the collection plate and the needle to 15 cm, the injection speed of the syringe pump to 0.6 mL / h (flow rate), set the positive voltage to 12 kV, and the negative voltage to 2....

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Abstract

The invention discloses a nanometer platinum-copper alloy catalytic material for electrolysis of water. The nanometer platinum-copper alloy catalytic material for electrolysis of water is prepared by using electrospinning technique and chemical vapor deposition; platinum-copper alloy nanoparticles are uniformly dispersed on carbon nanofibers, and the nanoparticles are free of obvious agglomeration, small in particle size and uniform in distribution and have a great number of active sites, thereby improving the catalytic activity of the material; and a preparation method for the nanometer platinum-copper alloy catalytic material is simple in process flow, free of production of toxic substances, friendly to environment, free of pollution and good in repeatability, and has good industrial application prospect.

Description

technical field [0001] The invention relates to a catalytic material for electrolyzing water, in particular to a catalytic material for electrolyzing water of a nanometer-sized platinum-copper alloy. Background technique [0002] In recent years, problems such as environmental depletion and energy pollution have attracted widespread attention from scientists, and hydrogen, as an ideal and efficient energy source, has great hope to replace fossil fuels and become the leader of new energy sources in the future. Among many hydrogen production technologies, hydrogen production by electrolysis of water has the advantages of simple operation, low cost and no pollution, and is considered to be the most promising hydrogen production technology. Efficient hydrogen evolution electrode materials should have the characteristics of good electrical conductivity, large specific surface area, low hydrogen evolution overpotential, high electrocatalytic activity, good electrochemical stabilit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/89B01J37/34D01F1/10D01F6/44D01F6/50D01F6/54
CPCD01F1/10D01F6/44D01F6/50D01F6/54B01J23/8926B01J37/34B01J35/393B01J35/33B01J35/399
Inventor 杜明亮王娟朱罕张明吴炜巍姚菊明
Owner ZHEJIANG SCI-TECH UNIV
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