Electrode material in hollow tubular structure, and preparation method for electrode material

A technology of tubular structure and electrode material, which is applied in the field of hollow tubular structure electrode material and its preparation, can solve problems such as insufficient, achieve the effect of shortening the path, good supercapacitive performance, and accelerating effective transfer

Inactive Publication Date: 2016-04-20
BEIJING UNIV OF CHEM TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In other words, while the core-shell nanostructure favors OH - And the transfer of electrons between the electrolyte and the electrode, but this is far from enough, we must also improve the transfer efficiency between them, so as to improve the rate performance of the electrode material

Method used

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  • Electrode material in hollow tubular structure, and preparation method for electrode material
  • Electrode material in hollow tubular structure, and preparation method for electrode material
  • Electrode material in hollow tubular structure, and preparation method for electrode material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A. Pretreatment of copper foam.

[0045] Use copper foam with a purity greater than 90% as raw material, cut 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.

[0046] B. Weigh 10.0g of sodium hydroxide and 2.28g of ammonium persulfate and dissolve them in 100mL of deionized water to form a mixed solution with a concentration of 2.5mol / L and 0.1mol / L respectively. After dipping the substrate in the mixed solution for 20 minutes, take it out, rinse it with deionized water, and dry it in an oven at 60°C for later use. Then, copper hydroxide nanorods can be grown on the foamed copper substrate.

[0047] C. Weigh 2.18g of nickel nitrate and 2.18g of cobalt nitrate and dissolve them in 50mL of deionized water as the electrolyte solution. The copper hydroxide / copper foam obtained in step B is used as a workin...

Embodiment 2

[0049] A. Select a copper mesh with a purity greater than 99% and cut it into 4.0*3.0cm 2 The sheet of area size is processed with the processing method of embodiment 1.

[0050] B. Weigh 5.0g of sodium hydroxide and 1.85g of ammonium persulfate, dissolve them in 100mL of deionized water to make a mixed solution, immerse the pretreated copper mesh substrate in the mixed solution for 25min, take it out, and use Rinse with deionized water and dry in an oven at 60°C for later use.

[0051] C. Weigh 1.09g of cobalt nitrate and 0.41g of ferric chloride and dissolve them in 50mL of deionized water as an electrolyte solution. The copper hydroxide / copper grid obtained in step B is used as a working electrode, Pt is used as a counter electrode, and Ag / AgCl is used as a reference electrode. Co 0.5 Fe 0.33 (OH) 2 Cobalt-iron composite hydroxide / copper hydroxide / copper mesh tubular structure material.

Embodiment 3

[0053] A. With embodiment 1.

[0054] B. Weigh 5.0g of sodium hydroxide and 1.44g of ammonium persulfate, dissolve them in 100mL of deionized water to make a mixed solution, immerse the pretreated foamed copper substrate in the mixed solution for 30min, take it out, and use Rinse with deionized water and dry in an oven at 45°C for later use.

[0055] C. Weigh 1.09g of nickel nitrate and 0.60g of ferric sulfate, and dissolve them in 50mL of deionized water as an electrolyte solution. The copper hydroxide / copper foam obtained in step B is used as a working electrode, Pt is used as a counter electrode, and Ag / AgCl is used as a reference electrode. Ni 0.625 Fe 0.25 (OH) 2 Nickel-iron composite hydroxide / copper hydroxide / copper foam hollow tubular structure material.

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Abstract

The invention provides an electrode material in a hollow tubular structure, and the electrode material is in the hollow tubular structure which consists of a composite hydroxide/copper hydroxide/copper-contained metal substrate. The chemical formulation of the composite hydroxide is MxM'y(OH)2, wherein M is Ni2+ or Co2+, M' is Co2+, Al3+, or Fe3+. According to the invention, a method of solution dipping and constant potential deposition, and a copper hydroxide nanowire array grows on the copper-contained metal substrate in an in-situ manner. The composite hydroxide is deposited on a copper hydroxide nanorod in electrolyte containing mixed metal salt solution in a manner of electro-deposition through employing the method of constant potential deposition. Meanwhile, electrochemical corrosion enables the copper hydroxide nanorod to be dissolved in a process of electro-deposition, thereby obtaining the hollow tubular structure of the composite hydroxide/copper hydroxide/copper-contained metal substrate. The electrode material is good in super-capacitance performance, and can be used for a super-capacitor.

Description

Technical field: [0001] The invention relates to a hollow tubular structure electrode material and a preparation method thereof, in particular to a composite hydroxide / copper hydroxide / copper-containing metal substrate hollow tubular structure electrode material and a preparation method thereof. Background technique: [0002] Over the past few decades, a great deal of effort has been expended to design and build new types of energy storage devices. Supercapacitors have attracted more and more attention due to their high energy density, good cycle stability and efficient charge and discharge performance. It was found that in order to obtain ideal supercapacitive performance, we must consider two aspects: the loading of electroactive components and the charge transfer process (including ions in the electrolyte and electrons in redox reactions). The research on the core-shell structure of one-dimensional nanowires makes the supercapacitor electrode materials burst into infinit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/86H01G11/24H01G11/30H01G11/26
CPCY02E60/13H01G11/86H01G11/24H01G11/26H01G11/30
Inventor 雷晓东张东彬梅运谊孔祥贵夏梦棋王雨薇刘晓华
Owner BEIJING UNIV OF CHEM TECH
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