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Copper oxide@nickel molybdate/ foamed copper composite electrode material and preparation method thereof

A composite electrode and foamed copper technology, which is applied in the field of preparation of inorganic non-metallic materials, can solve the problem that the capacitance value of electrode materials is difficult to meet the supercapacitor and other problems, and achieve the effects of excellent electrochemical performance, increasing contact area and reducing resistance.

Inactive Publication Date: 2019-05-21
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the capacitance values ​​of these electrode materials are mostly difficult to meet the needs of supercapacitors, and this problem can be well solved by constructing composite nanomaterials with a core-shell structure

Method used

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  • Copper oxide@nickel molybdate/ foamed copper composite electrode material and preparation method thereof
  • Copper oxide@nickel molybdate/ foamed copper composite electrode material and preparation method thereof
  • Copper oxide@nickel molybdate/ foamed copper composite electrode material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) 20mmol sodium hydroxide and 2mmol ammonium persulfate are fully dissolved in 40 milliliters of deionized water at room temperature, and the cleaned and dried foamed copper is immersed in the above mixed solution to obtain a copper hydroxide / foamed copper composite material;

[0034] (2) Fully dissolve 1.5mmol nickel nitrate and 1.5mmol sodium molybdate in 40 ml of deionized water, immerse the copper hydroxide nanowire array / copper foam obtained in step (1) in the above solution, and conduct a hydrothermal reaction at 90°C After 1 hour, after natural cooling, the obtained sample was washed and dried;

[0035] (3) The product obtained in step (2) was calcined in a nitrogen atmosphere at 350° C. for 2 hours to form a copper oxide@nickel molybdate / copper foam composite electrode material.

[0036] From X-ray Diffraction Spectrum figure 1 , and scanning electron microscope photographs figure 2 It can be seen that step (1) successfully synthesized copper hydroxide nano...

Embodiment 2

[0038] (1) 40 mmol sodium hydroxide and 2 mmol ammonium persulfate are fully dissolved in 40 milliliters of deionized water at room temperature, and the cleaned and dried foamed copper is immersed in the above mixed solution to obtain a copper hydroxide / foamed copper composite material;

[0039] (2) Fully dissolve 1.5mmol nickel nitrate and 1.5mmol sodium molybdate in 40 ml of deionized water, immerse the copper hydroxide nanowire array / copper foam obtained in step (1) in the above solution, and conduct a hydrothermal reaction at 90°C After 2 hours, after natural cooling, the obtained sample was washed and dried;

[0040] (3) The product obtained in step (2) was calcined in a nitrogen atmosphere at 350° C. for 2 hours to form a copper oxide@nickel molybdate / copper foam composite electrode material.

[0041] The copper oxide@nickel molybdate nanoarray obtained under the conditions of Example 2 is basically the same as that in Example 1.

Embodiment 3

[0043] (1) 20mmol sodium hydroxide and 2mmol ammonium persulfate are fully dissolved in 40 milliliters of deionized water at room temperature, and the cleaned and dried foamed copper is immersed in the above mixed solution to obtain a copper hydroxide / foamed copper composite material;

[0044] (2) Fully dissolve 1.5mmol nickel nitrate and 1.5mmol sodium molybdate in 40 ml of deionized water, immerse the copper hydroxide nanowire array / copper foam obtained in step (1) in the above solution, and conduct a hydrothermal reaction at 90°C After 6 hours, after natural cooling, the gained sample was washed and dried;

[0045] (3) The product obtained in step (2) was calcined in a nitrogen atmosphere at 450° C. for 2 hours to form a copper oxide@nickel molybdate / copper foam composite electrode material.

[0046] The copper oxide@nickel molybdate nanoarray obtained under the conditions of Example 3 is basically the same as that obtained in Example 1, but the diameter of the nanowires ob...

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Abstract

The invention relates to a copper oxide@nickel molybdate / foamed copper composite electrode material and a preparation method thereof, and belongs to the field of an inorganic non-metal material. A nickel-molybdate precursor is coated on a copper hydroxide nanowire on a surface of foamed copper in an in-situ way and is calcined under an atmosphere of inert gas to obtain the copper oxide@nickel molybdate / foamed copper composite electrode material with a core-shell structure. The core-shell nanowire array structure is directly grown on the foamed copper and is used as a positive electrode of asupercapacitor. Copper oxide is used as a core, nickel molybdate is used as a shell coated on the surface of the copper oxide, the active sites participating the electrochemical process are increased,and the capacitance value of the electrode material is improved. The material is simple in preparation process, has excellent and stable electrochemical performance, is suitably used as the electrodematerial of the supercapacitor and has wide application space in the field of the electrode material of the supercapacitor.

Description

technical field [0001] The invention belongs to the technical field of preparation of inorganic non-metallic materials, and specifically relates to a copper oxide@nickel molybdate / copper foam composite electrode material and a preparation method thereof. Background technique [0002] Supercapacitor is a new type of electrochemical energy storage device with high power density, excellent cycle stability and fast charging and discharging. It has huge potential applications in many fields such as hybrid vehicles, industrial power, national defense and storage systems. value. But its relatively low energy density greatly limits its application. How to design and prepare electrode materials with excellent electrochemical properties is the key to solving the existing problems of supercapacitors. [0003] Metal oxides with nanostructures such as nanosheets, nanowires or nanotubes are directly grown on conductive substrates, and used as the skeleton or scaffold of other oxides to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/86H01G11/46H01G11/30H01G11/26H01G11/24B82Y30/00B82Y40/00
CPCY02E60/13
Inventor 于德洋刘晓旸张紫晴滕弋非孟雅楠
Owner JILIN UNIV
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