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Preparation method of copper cobaltate porous microrod and nickel foam composite electrode material

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

Inactive Publication Date: 2016-02-17
BOHAI UNIV
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  • Summary
  • 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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  • Preparation method of copper cobaltate porous microrod and nickel foam composite electrode material
  • Preparation method of copper cobaltate porous microrod and nickel foam composite electrode material
  • Preparation method of copper cobaltate porous microrod and nickel foam composite electrode material

Examples

Experimental program
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Effect test

Embodiment 1

[0038] Immerse the clean nickel foam into 1.5mol / 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 0.25mol / L, wherein the molar concentration of cobalt nitrate is 0.5mol / L, the dropping rate is 120 drops / min, and the final molar ratio of copper nitrate and oxalic acid is 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 increase rate of 5°C / min, and dried at 100°C for 2 hours. Then put 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. / minute. After natural cooling, the copper cobaltate porous microrod / foam nickel composite electrode material is obtained.

[0039]In terms of mass ...

Embodiment 2

[0041] Immerse the clean nickel foam into 1.0mol / L oxalic acid aqueous solution, and add the mixed aqueous solution of copper nitrate and cobalt nitrate dropwise to the oxalic acid aqueous solution under the condition of the temperature of 25°C and the stirring speed of 120 rpm, in which the nitric acid The molar concentration of copper is 0.25mol / L, wherein the molar concentration of cobalt nitrate is 0.5mol / L, the dropping rate is 120 drops / min, and the final molar ratio of copper nitrate and oxalic acid is 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 increase rate of 5°C / min, and dried at 100°C for 2 hours. Then put 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. / minute. After natural cooling, the copper cobaltate porous microrod / foam nickel composite electrode...

Embodiment 3

[0044] Immerse the clean nickel foam into 1.5mol / 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 0.25mol / L, wherein the molar concentration of cobalt nitrate is 0.5mol / 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 increase rate of 5°C / min, and dried at 100°C for 2 hours. Then put 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. / minute. After natural cooling, the copper cobaltate porous microrod / foam nickel composite electrode material is obtained.

[0045] In terms of mass...

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Abstract

The invention belongs to the field of preparation of inorganic nonmetallic materials, and particularly relates to a preparation method of a copper cobaltate porous microrod and nickel foam composite electrode material. The preparation method comprises the steps that clean nickel foam is soaked in an oxalic acid aqueous solution, and a mixed aqueous solution of soluble copper salt and soluble cobalt salt is dropwise added into the oxalic acid aqueous solution under the condition of stirring at room temperature; stirring reaction is conducted till micron-structure precursors grow out on the surface of the nickel foam, the nickel foam is taken out, cleaning, drying and calcining are sequentially conducted, and the copper cobaltate porous microrod and nickel foam composite electrode material is obtained. According to the preparation method of the copper cobaltate porous microrod and nickel foam composite electrode material, the technology is simple and easy to carry out, the product purity is high, the preparation cost is low, the diameter of a copper cobaltate microrod ranges from 0.5 micrometer to 2 micrometers, the length of the copper cobaltate microrod is about 5-10 micrometers, the size of a nano pore channel ranges from 10 nm to 50 nm, the uniformity and the dispersity of the product are both good, the copper cobaltate porous microrod and nickel foam composite electrode material can be directly applied to electrode materials of supercapacitors, the production technology is simple, and the preparation method is prone to be applied to practical 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 Applications(China)
IPC IPC(8): H01G11/24H01G11/86H01G11/46
CPCY02E60/13H01G11/24H01G11/46H01G11/86
Inventor 张杰许家胜
Owner BOHAI UNIV
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