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Hollow foam autocatalytic electrode and preparation method thereof

A catalytic electrode, foam technology, applied in the direction of electrode, electrode shape/type, electrolysis process, etc., can solve the problems of limited specific surface area, complex components, and unfavorable industrial application.

Pending Publication Date: 2020-10-23
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These catalytic electrodes are all composed of a substrate and a catalyst. The components are complex, the specific surface area is limited, and the structural strength is relatively fragile, which is not conducive to industrial application.

Method used

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  • Hollow foam autocatalytic electrode and preparation method thereof
  • Hollow foam autocatalytic electrode and preparation method thereof
  • Hollow foam autocatalytic electrode and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1, the preparation of Ni-B hollow foam autogenous electrode

[0027] (1) Activation of polymer foam matrix

[0028] The 1 cm × 1 cm × 0.15 cm melamine resin foam to be activated was completely submerged in 10 mL of 0.2 mol / L nickel sulfate solution, and 10 mL of 0.3 mol / L (CH 3 ) 4 NB 3 h 8 Stir evenly, and then heat the water bath to 40 °C to initiate the reaction. After 5 min of reaction, rinse the activated non-metallic substrate with deionized water.

[0029] (2) Configure the electroless plating solution containing Ni-B

[0030] The chemical plating solution raw material ratio and process conditions are shown in the table below. Dissolve 1.5 g of sodium sulfate and 2.5 g of sodium succinate in 100 mL of deionized water. After the ultrasonic solution is completely dissolved, add 2.5 g of nickel sulfate hexahydrate to form a stable complex solution; finally add 0.72 g of dimethylamine borane , when it is completely dissolved, the pH of the solution i...

Embodiment 2

[0038] Embodiment 2, the preparation of Ni-Mo-B hollow foam autogenous electrode

[0039] (1) Activation of polymer foam matrix

[0040] Completely immerse the 1 cm × 1 cm × 0.15 cm polyurethane foam to be activated in 10 mL of 0.2 mol / L nickel chloride solution, and add 10 mL of 0.5 mol / L KBH 4 Stir well, and after reacting for 5 min, rinse the activated non-metallic substrate with deionized water.

[0041] (2) Configure the electroless plating solution containing Ni-B

[0042]The chemical plating solution raw material ratio and process conditions are shown in the table below. To configure the electroless plating solution containing Ni-Mo-B, its raw material ratio and process conditions are shown in the table below. Sodium sulfate (1.5 g) and sodium succinate (2.5 g) were dissolved in deionized water (100 mL), and after ultrasonic dissolution was complete, nickel sulfate hexahydrate (2.5 g) and sodium molybdate (0.02 g) were added to form Stable complex solution; add dime...

Embodiment 3

[0050] Embodiment 3, the preparation of Ni-P-B hollow foam autogenous electrode

[0051] (1) Activation of polymer foam matrix

[0052] Completely immerse the 1 cm × 1 cm × 0.15 cm melamine resin foam to be activated in 10 mL of 0.2 mol / L nickel sulfate solution, and add 10 mL of 0.3 mol / L NaBH 4 Stir well, and after reacting for 5 min, rinse the activated non-metallic substrate with deionized water.

[0053] (2) Configure the chemical plating solution

[0054] The chemical plating solution raw material ratio and process conditions are shown in the table below. Sodium sulfate (1.5 g), sodium hypophosphite (0.1 g), and sodium succinate (2.5 g) were dissolved in deionized water (100 mL), and after ultrasonic dissolution was complete, nickel sulfate hexahydrate (2.5 g) was added, A stable complex solution is formed; finally add dimethylamine borane (0.72 g) and wait until it is completely dissolved, and the pH environment of the solution is about 8.0;

[0055] .

[0056] (...

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Abstract

The invention belongs to the technical field of electrochemical catalytic electrodes, and particularly relates to a hollow foam autocatalytic electrode and a preparation method thereof. The autocatalytic electrode is a hollow foam structure electrode constructed by a transition metal catalyst, and is obtained through coating a conductive transition metal catalyst with macromolecule foam, and thenremoving the macromolecule foam through high-temperature treatment. The catalyst is selected from an alloy or a compound consisting of a transition metal and one or more elements of boron, phosphorus,carbon, nitrogen, sulfur and oxygen; the transition metal is one or more of nickel, cobalt, iron, cerium, copper, manganese, vanadium, tungsten and molybdenum; the macromolecule foam is selected frommelamine resin foam, polyurethane foam, polystyrene foam and polyethylene foam. The autocatalytic electrode is low in cost, simple in structure, high in catalytic activity, good in cycling stabilityand excellent in mechanical strength, and has industrial practical value in the fields of water electrolysis, chlor-alkali chemical industry, sewage treatment, industrial catalysis, battery electrodesand the like.

Description

technical field [0001] The invention belongs to the technical field of electrochemical catalytic electrodes, and in particular relates to a novel hollow foam autocatalytic electrode and a preparation method thereof. Background technique [0002] Since the 21st century, hydrogen energy has been vigorously developed as an energy carrier with the most potential to replace traditional fossil fuels. Hydrogen production by electrolysis of water is an effective way to efficiently obtain clean energy. At present, precious metals such as platinum and iridium are excellent catalytic materials, but their industrial application is limited due to their high price. It is of great significance to develop high-efficiency catalytic electrodes that are inexpensive and capable of large-scale production. [0003] Transition metal compounds have a wide range of applications in the field of electrochemical catalysis due to their good electrochemical catalytic activity, conductivity and stabilit...

Claims

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Application Information

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IPC IPC(8): C25B11/03C25B11/04C23C18/16C23C18/20C23C18/32C23C18/31C25B1/04
CPCC25B11/04C25B1/04C23C18/1644C23C18/1641C23C18/2053C23C18/32C23C18/31Y02E60/36
Inventor 郭艳辉刘惠祥
Owner FUDAN UNIV
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