A kind of preparation method of copper cobalt oxide porous microrod/nickel foam composite electrode material

A composite electrode, nickel foam technology, applied in the field of preparation of inorganic non-metallic materials, can solve the problems of high price, low porosity, hindering the commercialization progress of RuO2, etc., to improve utilization, increase electrical conductivity, and excellent electrochemical properties. Effect

Inactive Publication Date: 2018-06-01
BOHAI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

So far, the metal oxide electrode material with the best electrochemical performance is RuO 2 , it has good electrical conductivity, is very stable in solution and can form a very high specific capacity, but its high price, low porosity and other shortcomings seriously hinder the development of RuO 2 commercialization progress

Method used

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  • A kind of preparation method of copper cobalt oxide porous microrod/nickel foam composite electrode material
  • A kind of preparation method of copper cobalt oxide porous microrod/nickel foam composite electrode material
  • A kind of preparation method of copper cobalt oxide porous microrod/nickel foam composite electrode material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038]Immerse the clean nickel foam into 1.5 mol / L oxalic acid aqueous solution, and add the mixed aqueous solution of copper nitrate and cobalt nitrate dropwise to the oxalic acid aqueous solution at a temperature of 25 °C and a stirring speed of 100 rpm. The molar concentration of copper was 0.25 mol / L, the molar concentration of cobalt nitrate was 0.5 mol / L, the dropping rate was 120 drops / min, and the final molar ratio of copper nitrate and oxalic acid was 1:30. The stirring reaction time was 20 minutes. After the reaction, the nickel foam was taken out and washed, then put into an oven with a programmed temperature rise rate of 5 °C / min, and dried at 100 °C for 2 hours. Then place it in a muffle furnace for calcination, the calcination time is 2.5 hours, the calcination temperature is 350°C, and the heating rate is 10°C / min. After natural cooling, the copper cobaltate porous microrod / foam nickel composite electrode material is obtained.

[0039] In terms of mass percent...

Embodiment 2

[0041] Immerse the clean nickel foam into 1.0 mol / L oxalic acid aqueous solution, and add the mixed aqueous solution of copper nitrate and cobalt nitrate dropwise to the oxalic acid aqueous solution at a temperature of 25 °C and a stirring speed of 120 rpm, in which the nitric acid The molar concentration of copper was 0.25 mol / L, the molar concentration of cobalt nitrate was 0.5 mol / L, the dropping rate was 120 drops / min, and the final molar ratio of copper nitrate and oxalic acid was 1:30. The stirring reaction time was 20 minutes. After the reaction, the nickel foam was taken out and washed, then put into an oven with a programmed temperature rise rate of 5 °C / min, and dried at 100 °C for 2 hours. Then place it in a muffle furnace for calcination, the calcination time is 2.5 hours, the calcination temperature is 350°C, and the heating rate is 10°C / min. After natural cooling, the copper cobaltate porous microrod / foam nickel composite electrode material is obtained.

[0042...

Embodiment 3

[0044] Immerse the clean nickel foam into 1.5 mol / L oxalic acid aqueous solution, and add the mixed aqueous solution of copper nitrate and cobalt nitrate dropwise to the oxalic acid aqueous solution at a temperature of 25 °C and a stirring speed of 100 rpm. The molar concentration of copper is 0.25 mol / L, wherein the molar concentration of cobalt nitrate is 0.5 mol / L, the dropping rate is 120 drops / min, and the final molar ratio of copper nitrate and oxalic acid is 1:10. The stirring reaction time was 15 minutes. After the reaction, the nickel foam was taken out and washed, then put into an oven with a programmed temperature rise rate of 5 °C / min, and dried at 100 °C for 2 hours. Then place it in a muffle furnace for calcination, the calcination time is 2.5 hours, the calcination temperature is 350°C, and the heating rate is 10°C / min. After natural cooling, the copper cobaltate porous microrod / foam nickel composite electrode material is obtained.

[0045] In terms of mass pe...

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Abstract

The invention belongs to the field of preparation of inorganic non-metallic materials, and in particular relates to a preparation method of copper cobaltate porous microrod / nickel foam composite electrode material. Clean foamed nickel is immersed in oxalic acid aqueous solution, and the above-mentioned A mixed aqueous solution of soluble copper salt and soluble cobalt salt is added dropwise into the solution. Stirring and reacting until the microstructure precursor grows on the surface of the foamed nickel, taking out the foamed nickel, washing, drying and calcining in sequence to obtain the copper cobaltate porous microrod / foamed nickel composite electrode material. The process of the invention is simple and easy, the product is high in purity, and the preparation cost is low. The diameter of the copper cobaltate microrod is between 0.5 and 2 μm, the length is about 5 to 10 μm, the size of the nanopore is between 10 and 50 nm, and the product The uniformity and dispersion are good, and it can be directly applied to supercapacitor electrode materials, and the production process is relatively simple, which is easy to apply to actual large-scale production.

Description

technical field [0001] The invention belongs to the technical field of preparation of inorganic non-metallic materials, and in particular relates to a preparation method of a copper cobaltate porous microrod / foam nickel composite electrode material. Background technique [0002] Metal oxide supercapacitor materials are favored by researchers because of their high specific capacitance and excellent electronic conductivity. The Faraday pseudo-capacitance of metal oxide electrode materials is 10 to 100 times that of the electric double layer capacitance of carbon materials. So far, the metal oxide electrode material with the best electrochemical performance is RuO 2 , it has good electrical conductivity, is very stable in solution and can form a very high specific capacity, but its high price, low porosity and other shortcomings seriously hinder the development of RuO 2 commercialization progress. The development of new metal oxide electrode materials has become a research h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/24H01G11/86H01G11/46
CPCY02E60/13
Inventor 张杰许家胜
Owner BOHAI UNIV
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