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Iron-copper oxide/copper base 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: 2018-09-14
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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  • Iron-copper oxide/copper base electrode material and preparation method thereof
  • Iron-copper oxide/copper base electrode material and preparation method thereof
  • Iron-copper oxide/copper base electrode material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

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

[0040] Cut the foamed copper with a purity greater than 99% into 4.0*3.0cm 2 The size of the slice is ultrasonically cleaned with 10% hydrochloric acid for 5 minutes, then rinsed with deionized water and absolute ethanol, and dried in an oven at 60°C for use. Weigh 10.0g of sodium hydroxide and 2.28g of ammonium persulfate and dissolve them in 100mL of deionized water to make the concentration 2.5mol L respectively. -1 And 0.1mol L -1 After immersing the pretreated foamed copper substrate in the mixed solution for 20 minutes, take it out, rinse with deionized water, and dry it in an oven at 60°C to obtain copper hydroxide nanorods grown on the foamed copper substrate. Material, namely Cu(OH) 2 / Foam copper.

[0041] B. Weigh 1.515g of ferric nitrate nonahydrate, and dissolve it in 50mL of deionized water as an electrolyte solution. The Cu(OH) obtained in step A 2 / Foam copper as the working electrode, Pt ...

Embodiment 2

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

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

Embodiment 3

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

[0053] B. Weigh 2.5 g of ferric chloride and dissolve it in 50 mL of deionized water as an electrolyte solution. The Cu(OH) obtained in step A 2 / Copper as the working electrode, Pt as the counter electrode and Ag / AgCl as the reference electrode. Under the condition of -1.0V ...

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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] Supercapacitors (supercapacitors), as a new type of energy storage device, have attracted more and more attention due to their high power density, better 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 anode materials for supercapacitors has been stagnant, and the specific capacitance values ​​of anode materials for supercapacitors reported in the literature are generally lower than 1000F g. -1 , Is much lower than the specific capacity of the positive electrode mater...

Claims

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Application Information

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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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