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A kind of iron copper oxide/copper-based electrode material and preparation method thereof

A technology of electrode materials and oxides, applied in the field of iron-copper oxide/copper-based electrode materials and their preparation, can solve the problem of low specific capacity of carbon materials and conductive polymers, restricting the matching of positive and negative electrodes of supercapacitors, and affecting the energy of supercapacitors Density and other issues, to achieve good structural and mechanical properties, easy to scale up production and preparation, and low cost

Active Publication Date: 2019-10-18
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In contrast, the research on supercapacitor anode materials has been stagnant, and the specific capacitance values ​​of supercapacitor anode materials reported in the literature are generally lower than 1000F g -1 , which is far lower than the specific capacity of the positive electrode material, which greatly restricts the matching of the positive and negative electrodes of the supercapacitor, affects the improvement of the energy density of the supercapacitor, and limits the application of the supercapacitor in actual production and life.
[0003] At this stage, the research on supercapacitor anode materials is mainly concentrated in the fields of carbon materials, conductive polymers, iron oxides, etc., but due to the generally low specific capacity of carbon materials and conductive polymers, iron oxides are relatively Due to poor performance and other reasons, the specific capacitance value obtained by the actual electrode material is much lower than the theoretical specific capacitance value.

Method used

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  • A kind of iron copper oxide/copper-based electrode material and preparation method thereof
  • A kind of iron copper oxide/copper-based electrode material and preparation method thereof
  • A kind of iron copper oxide/copper-based electrode material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A. Preparation of copper hydroxide / copper-containing metal substrates

[0040] Cut the copper foam with a purity greater than 99% to 4.0*3.0cm 2 Slices of the same size were ultrasonically cleaned with 10% hydrochloric acid for 5 minutes, rinsed with deionized water and absolute ethanol respectively, and dried in an oven at 60°C for later use. Weigh 10.0g of sodium hydroxide and 2.28g of ammonium persulfate and dissolve them in 100mL of deionized water to make a concentration of 2.5mol L -1 and 0.1mol L -1 The mixed solution of the pretreated copper foam substrate was immersed in the mixed solution for 20 minutes, then taken out, rinsed with deionized water, and dried in an oven at 60°C, and the copper hydroxide nanorods grown on the copper foam substrate were obtained. The material, namely Cu(OH) 2 / copper foam.

[0041] B. Weigh 1.515g ferric nitrate nonahydrate, dissolve it in 50mL of deionized water, and use the Cu(OH) obtained in step A as the electrolyte solu...

Embodiment 2

[0046] A. Select a copper mesh with a purity greater than 99%, and cut it into 4.0*3.0cm 2 Slices of the same size were ultrasonically cleaned with 10% hydrochloric acid for 5 minutes, rinsed with deionized water and absolute ethanol respectively, and dried in an oven at 60°C for later use. Weigh 10.0g of sodium hydroxide and 2.28g of ammonium persulfate and dissolve them in 100mL of deionized water to make a concentration of 2.5molL -1 and 0.1mol L -1 The mixed solution, the pretreated copper mesh was immersed in the mixed solution for 20min, then taken out, rinsed with deionized water, and dried in an oven at 60°C, so that copper hydroxide nanorod arrays were grown on the surface of the copper mesh substrate. ie Cu(OH) 2 / copper mesh

[0047] B. Weigh 1.25g of ferric chloride and 0.5g of ferrous sulfate and dissolve them in 50mL of deionized water as the electrolyte solution. Cu(OH) obtained in step A 2 / copper mesh as the working electrode, Pt as the counter electrode...

Embodiment 3

[0052] A. Choose a copper sheet with a purity greater than 99%, and cut it into 4.0*3.0cm 2 Slices of the same size were ultrasonically cleaned with 10% hydrochloric acid for 5 minutes, rinsed with deionized water and absolute ethanol respectively, and dried in an oven at 60°C for later use. Weigh 10.0g of sodium hydroxide and 2.28g of ammonium persulfate and dissolve them in 100mL of deionized water to make a concentration of 2.5molL -1 and 0.1mol L -1 The mixed solution, the pretreated copper grid was immersed in the mixed solution for 20 minutes, then taken out, rinsed with deionized water, and dried in an oven at 60 ° C, so that copper hydroxide nanorod arrays were grown on the surface of the copper substrate. ie Cu(OH) 2 / copper sheet.

[0053] B. Weigh 2.5g of ferric chloride and dissolve it in 50mL of deionized water as the electrolyte solution. Cu(OH) obtained in step A 2 / copper sheet as the working electrode, Pt as the counter electrode, and Ag / AgCl as the refe...

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Abstract

The invention provides an iron-copper oxide / copper base electrode material and a preparation method thereof. The iron-copper oxide / copper base electrode material is expressed as Fe3O4 / CuO / copper base.A copper hydroxide nanowire array, i.e. Cu(OH)2 / copper base, is grown on the copper base in an in-situ way; then ferric hydroxide is electrodeposited on the Cu(OH)2 / copper base in the electrolyte solution containing iron ions by using the method of potentiostatic electro-deposition so as to form the hollow tubular structure Fe(OH)3 / Cu(OH)2 / copper base; and then the ferric hydroxide is transformedinto ferric oxide and the copper hydroxide is transformed into copper oxide through high temperature roasting, and the hollow tubular structure is maintained so that the hollow tubular structure Fe3O4 / CuO / copper base material is obtained. The material has great super capacitance performance and is suitable for being used as the supercapacitor electrode material.

Description

Technical field: [0001] The invention relates to an electrode material and a preparation method thereof, in particular to an iron-copper oxide / copper-based electrode material and a preparation method thereof. Background technique: [0002] Supercapacitor (ultracapacitor), as a new type of energy storage device, has attracted more and more attention due to its high power density, good cycle stability and efficient charge and discharge performance. In recent years, research on supercapacitors has mainly focused on cathode materials. At present, the research on supercapacitor cathode materials has made considerable progress, and its specific capacitance can reach 2000-3000F g -1 . In contrast, the research on supercapacitor anode materials has been stagnant, and the specific capacitance values ​​of supercapacitor anode materials reported in the literature are generally lower than 1000F g -1 , which is far lower than the specific capacity of the positive electrode material, w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/24H01G11/30H01G11/46H01G11/86H01M4/36H01M4/38H01M4/485H01M4/525H01M10/052
CPCH01G11/24H01G11/30H01G11/46H01G11/86H01M4/366H01M4/38H01M4/485H01M4/525H01M10/052Y02E60/10Y02E60/13
Inventor 雷晓东邵渊孔祥贵张东彬
Owner BEIJING UNIV OF CHEM TECH
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