In-situ preparation method of electrode coated with nickel-copper molybdate composite film

An in-situ preparation and composite film technology, which is applied in the manufacture of hybrid capacitor electrodes, hybrid/electric double layer capacitors, etc., can solve the problems of many processes, complex processes, and the need to add binders, etc., to achieve simple processes, low investment, low cost effect

Active Publication Date: 2021-01-22
NANJING INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art, to provide a method for in-situ preparation of an electrode coated with nickel-copper molybdate composite film, which solves the complex process, many procedures, and the need to add a binder in the prior art. technical problem

Method used

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  • In-situ preparation method of electrode coated with nickel-copper molybdate composite film
  • In-situ preparation method of electrode coated with nickel-copper molybdate composite film
  • In-situ preparation method of electrode coated with nickel-copper molybdate composite film

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Embodiment 1

[0027] An in-situ preparation method of an electrode coated with a nickel-copper molybdate composite film according to an embodiment of the present invention, firstly, conduct a conductive substrate (which can be a pure iron sheet, a pure aluminum sheet or a pure copper sheet) with a length of 35 mm, a width of 10 mm, and a thickness of 0.2 mm. , preferably pure iron sheet) for alkaline degreasing, water washing, activation and water washing, and then electroless plating in an electroless nickel-copper-phosphorus plating solution at (78±1)°C for 120min to obtain an amorphous nickel-copper-phosphorus coating on the surface The current collector, energy spectrum analysis shows that the atomic percentage concentration ratio of nickel and copper in the amorphous nickel copper phosphorus coating is 1.1:1;

[0028] Then put the current collector into the molybdate solution prepared by 200mL / L hydrochloric acid (or sulfuric acid), 40~80g / L ammonium molybdate (or sodium molybdate) and ...

Embodiment 2

[0034] An in-situ preparation method of an electrode coated with a nickel-copper molybdate composite film according to an embodiment of the present invention, firstly, a pure iron sheet with a length of 35mm, a width of 10mm, and a thickness of 0.2mm is subjected to alkaline degreasing, water washing, activation and water washing, and then Electroless nickel-copper-phosphorus plating to obtain a current collector whose surface is covered with an amorphous nickel-copper-phosphorus coating, energy spectrum analysis shows that the atomic percentage concentration ratio of nickel and copper in the amorphous nickel-copper-phosphorus coating is 1.1:1; then the current collector is discharged Add nickel-copper molybdate composite film to the molybdate solution prepared by 200mL / L hydrochloric acid, 40g / L ammonium molybdate and 800mL / L water. The solution is heated with an oven, and the set temperature of the oven is 100°C. The reaction time is 30 minutes. After the reaction is complete...

Embodiment 3

[0037] An in-situ preparation method of an electrode coated with a nickel-copper molybdate composite film according to an embodiment of the present invention, firstly, a pure iron sheet with a length of 35mm, a width of 10mm, and a thickness of 0.2mm is subjected to alkaline degreasing, water washing, activation and water washing, and then Electroless nickel-copper-phosphorus plating to obtain a current collector whose surface is covered with an amorphous nickel-copper-phosphorus coating, energy spectrum analysis shows that the atomic percentage concentration ratio of nickel and copper in the amorphous nickel-copper-phosphorus coating is 1.1:1; then the current collector is discharged Add the molybdate nickel-copper composite film prepared in the molybdate solution prepared by 200mL / L hydrochloric acid, 40g / L ammonium molybdate and 800mL / L water, the solution is heated with a constant temperature water bath, and the temperature of the constant temperature water bath is set at 3...

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Abstract

The invention discloses an in-situ preparation method of an electrode coated with a nickel-copper molybdate composite film. The preparation method comprises the following steps: putting a conductive substrate in a nickel-copper-phosphorus plating solution for chemical plating to obtain a current collector surface-coated with an amorphous nickel-copper-phosphorus plating layer; and putting the current collector plated with the nickel-copper-phosphorus alloy into a molybdate solution, and conducting heating to obtain the electrode coated with the nickel-copper molybdate composite film. The nickel-copper molybdate composite film prepared by using the method is a black film under macroscopic observation, and is a characteristic film with dry-riverbed-like dry mud morphology under microscopic observation. The method has the characteristics of low investment, simple process operation and suitability for industrial production.

Description

technical field [0001] The invention specifically relates to an in-situ preparation method of an electrode coated with a nickel-copper molybdate composite film, and belongs to the technical field of supercapacitor electrode material preparation. Background technique [0002] As a new type of energy storage device, supercapacitors have broad application prospects in engineering. In supercapacitors, electrodes are one of the core components that affect the performance of supercapacitors. Molybdate electrode materials have the advantages of relatively stable structure and excellent physical and chemical properties. In recent years, research on molybdate electrode materials has attracted much attention. [0003] At present, the preparation methods of molybdate electrodes mainly include hydrothermal synthesis method, chemical precipitation method and sol-gel method. These preparation methods usually have the disadvantages of complex process, many procedures, and the need to add...

Claims

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Application Information

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IPC IPC(8): H01G11/86H01G11/30
CPCH01G11/86H01G11/30
Inventor 方信贤戴玉明巴志新王章忠
Owner NANJING INST OF TECH
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