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Electrolytic water catalytic material of gold-copper twin structure

A catalytic material and water electrolysis technology, applied in the electrolysis process, electrolysis components, electrodes, etc., can solve problems such as high cost and scarcity, and limit practical applications, achieve high universality, good industrial application prospects, and improve hydrogen evolution active effect

Active Publication Date: 2017-11-24
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In hydrogen evolution, platinum is the catalyst with the best performance, but the high cost and scarcity of Pt limit its practical application.

Method used

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  • Electrolytic water catalytic material of gold-copper twin structure
  • Electrolytic water catalytic material of gold-copper twin structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0025] A gold-copper twin structure electrolytic water catalytic material, the electrolytic water catalytic material is a gold-copper twin structure nanoparticle / carbon nanofiber hybrid material, prepared through the following steps:

[0026] (1) Put deionized water into the container, slowly add the water-soluble polymer under stirring conditions, heat the oil bath to 80°C until the solution becomes transparent, then add water-soluble gold salt and water-soluble copper salt , stirring and mixing evenly to prepare a precursor solution; the fineness of the carbon nanofibers is 300-600 nm. The particle size of the gold-copper twin structure nanoparticles is 5-30 nm. The water-soluble high molecular polymer is one or more of polyvinyl alcohol, polyetherimide and polyvinylpyrrolidone. The mass concentration of each component in the precursor solution is as follows: 10-15% of water-soluble high molecular polymer, 1-10% of gold salt and copper salt in total, and the balance of deio...

Embodiment 1

[0031] Add a certain volume of deionized water to the three-necked flask, then slowly add 1.5 grams of polyvinyl alcohol (PVA) dissolved powder under stirring conditions, heat the oil bath to 80 ° C until the solution becomes transparent, and then add 0.05 grams of copper chloride and 0.025 g of chloroauric acid are slowly added to the above solution, and the precursor solution containing gold salt and copper salt can be obtained after 30 minutes. The mass concentration of each component in the precursor solution is as follows: polyvinyl alcohol 12%, chloroauric acid 0.2%, copper chloride 0.4%; transfer the obtained precursor solution to a 10mL syringe, then fix the syringe on the electrospinning syringe pump, the positive pole of the high-voltage DC power supply is connected to the needle tip of the syringe, the high-voltage DC power supply The negative electrode is connected to the receiving plate covered with aluminum foil, the distance between the collecting plate and the n...

Embodiment 2

[0033]Add a certain volume of deionized water to the three-necked flask, then slowly add 1.5 grams of polyetherimide (PEI) dissolved powder under stirring conditions, heat the oil bath to 80 ° C until the solution becomes transparent, and then add 0.025 grams of chlorine Copper chloride and 0.05 g of chloroauric acid are slowly added to the above solution, and a precursor solution containing gold salt and copper salt can be obtained after 30 minutes. The mass concentration of each component in the precursor solution is as follows: polyetherimide 12% , 0.4% chloroauric acid, 0.2% copper chloride; transfer the obtained precursor solution to a 10 mL syringe, then fix the syringe on the syringe pump for electrospinning, and connect the positive pole of the high-voltage DC power supply to the needle tip of the syringe, The negative pole of the high-voltage DC power supply is connected to the receiving plate covered with aluminum foil, the distance between the collecting plate and th...

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Abstract

The invention discloses an electrolytic water catalytic material of a gold-copper twin structure. The electrolytic water catalytic material is a nano-particle / carbon nanofiber hybrid material of the gold-copper twin structure. According to the electrolytic water catalytic material, the size of the gold-copper twin structure nanometer material is uniform, no obvious agglomeration phenomenon exists, a large number of nanometer interfaces of the electrolytic water catalytic material can effectively improve the catalytic activity, and good stability and repeatability are achieved.

Description

technical field [0001] The invention relates to a catalytic material for electrolysis of water, in particular to a catalytic material for electrolysis of water with a gold-copper twin structure. Background technique [0002] With the increasing demand for renewable energy in today's world, electrocatalysts have received extensive attention due to their unique role in the production of renewable energy such as hydrogen. In the future, solutions to energy shortages will rely on efficient energy conversion, such as converting electrical energy into chemical energy or converting solar energy into chemical energy. Among the various ways of converting electrical energy into chemical energy, the energy conversion method of electrolysis of water to produce hydrogen and oxygen has received extensive attention. In the electrolysis of water, efficient electrocatalysts often exhibit excellent electrocatalytic performance, such as reducing the onset potential in the process of electroly...

Claims

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Application Information

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IPC IPC(8): C25B11/06C25B1/04
CPCC25B1/04C25B11/093Y02E60/36
Inventor 杜明亮王娟朱罕张明
Owner ZHEJIANG SCI-TECH UNIV
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