Carbon nano-tube net/Ni(OH)<2>/PPY composite electrode, preparation method and application

A technology of carbon nanotubes and composite electrodes, applied in hybrid capacitor electrodes, hybrid/electric double-layer capacitor manufacturing, nanotechnology, etc., can solve problems such as complex preparation processes, achieve uniform coating layer, reduce the probability of side reactions, high power effect

Inactive Publication Date: 2016-11-30
深圳博磊达新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although it has high mechanical strength, high toughness, excellent electrical conductivity, ductility and bending properties, the preparation process is relatively complicated. In the process of liquid phase synthesis or electrochemical deposition, it is necessary to place the carbon nanotube film on two glass slides first. A sandwich structure is formed between them, or the two sides of the film are glued to the platinum sheet with conductive adhesive to make the working electrode, and then the pseudocapacitive material is compounded.

Method used

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  • Carbon nano-tube net/Ni(OH)&lt;2&gt;/PPY composite electrode, preparation method and application
  • Carbon nano-tube net/Ni(OH)&lt;2&gt;/PPY composite electrode, preparation method and application
  • Carbon nano-tube net/Ni(OH)&lt;2&gt;/PPY composite electrode, preparation method and application

Examples

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Effect test

Embodiment 1

[0033] Carbon nanotube network / Ni(OH) 2 / PPY composite electrode is made of carbon nanotube network / Ni(OH) 2 The basic electrode formed by the composite material is obtained by electrodepositing polypyrrole on the surface, and the preparation steps are as follows:

[0034] 1) Preparation of basic electrodes

[0035] Disperse 3g of carbon nanotube networks (CNTN) with connection points into 250mL Ni(NO 3 ) 2 ·6H 2 In the O solution, slowly add 150 mL of KOH solution with a concentration of 0.1 mol / L dropwise under the condition of magnetic stirring. After 30 minutes, the dropwise addition is completed. 2 composite materials;

[0036] The 9g carbon nanotube network / Ni(OH) that will weigh 2Composite material, 5g acetylene black and 5g polytetrafluoroethylene emulsion (PTFE, solid content 60%) are mixed, add 15g N-methylpyrrolidone and stir evenly, obtain electrode slurry; Electrode slurry is coated on foamed nickel current collector The surface is pressed and formed with a...

Embodiment 2

[0041] Carbon nanotube network / Ni(OH) 2 / PPY composite electrode is made of carbon nanotube network / Ni(OH) 2 The basic electrode formed by the composite material is obtained by electrodepositing polypyrrole on the surface, and the preparation steps are as follows:

[0042] 1) Preparation of basic electrodes

[0043] Disperse the weighed 1g carbon nanotube network with connection points into 250mL Ni(NO 3 ) 2 ·6H 2 In the O solution, slowly add 50 mL of KOH solution with a concentration of 0.1 mol / L dropwise under the condition of magnetic stirring, and the dropwise addition is completed in 10 minutes. 2 composite materials;

[0044] The 9.5g carbon nanotube network / Ni(OH) 2 Composite material, 2g acetylene black and 3g polytetrafluoroethylene emulsion (solid content 60%) are mixed, add 15g N-methylpyrrolidone and stir evenly, obtain electrode slurry; Electrode slurry is coated on foamed nickel current collector surface, Press and form with a roller press (pressure 5MPa)...

Embodiment 3

[0049] Carbon nanotube network / Ni(OH) 2 / PPY composite electrode is made of carbon nanotube network / Ni(OH) 2 The basic electrode formed by the composite material is obtained by electrodepositing polypyrrole on the surface, and the preparation steps are as follows:

[0050] 1) Preparation of basic electrodes

[0051] Disperse 5 g of carbon nanotube networks with connection points into 250 mL of Ni(NO) with a concentration of 0.1 mol / L 3 ) 2 ·6H 2 In the O solution, slowly add 250 mL of KOH solution with a concentration of 0.1 mol / L dropwise under the condition of magnetic stirring, and the dropwise addition is completed in 50 minutes. 2 composite materials;

[0052] The 9.2g carbon nanotube network / Ni(OH) 2 After composite material, 3.5g acetylene black and 4g polytetrafluoroethylene emulsion (solid content 60%) are mixed, add 15g N-methylpyrrolidone and stir evenly, obtain electrode slurry; Electrode slurry is coated on foamed nickel current collector surface , press an...

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Abstract

The invention discloses a carbon nano-tube net/Ni(OH)<2>/PPY composite electrode, a preparation method and application, belonging to the technical field of super capacitors. The carbon nano-tube net/Ni(OH)<2>/PPY composite electrode is a core-shell structure; a core is composed of Ni(OH)<2> and a carbon nano-tube net doped therein; and a shell is uniform and compact PPY formed through an electrochemical deposition method. The composite electrode exerts a double-electrode-layer effect by utilizing the carbon nano-tube net having high specific surface area; with the help of the pseudocapacitance characteristic of the nano metallic oxide Ni(OH)<2>, the specific capacity is increased; simultaneously, depending on the high electric conductivity and the high specific energy density of the polymeric conductive polymer PPY, the discharge capability of the super capacitors under a high rate can be improved; the carbon nano-tube net with a connection point in a composite pole piece is doped in Ni(OH)<2>; therefore, the electric conductivity and the liquid sucking and keeping capability of the material are easily improved; and furthermore, the structural stability of the material can be improved through a net type structure.

Description

technical field [0001] The invention relates to a carbon nanotube network / Ni(OH) 2 The invention relates to a composite electrode / PPY, and also relates to a preparation method and application of the composite electrode, and belongs to the technical field of supercapacitors. Background technique [0002] Supercapacitor is a new type of electrochemical energy storage device between traditional capacitors and batteries. Compared with traditional capacitors, supercapacitors have higher energy density; compared with batteries, they have higher power density and better cycle life. Therefore, it combines the advantages of traditional capacitors and batteries, is a chemical power source with broad application prospects, and belongs to the emerging category of power compensation and energy storage devices. [0003] Supercapacitors are divided into electric double layer supercapacitors and pseudocapacitors. The electrode materials of electric double layer supercapacitors are mainly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/24H01G11/48H01G11/36H01G11/30H01G11/86B82Y30/00B82Y40/00
CPCY02E60/13H01G11/24B82Y30/00B82Y40/00H01G11/30H01G11/36H01G11/48H01G11/86
Inventor 王燕薛历兴原东甲王维毛国华
Owner 深圳博磊达新能源科技有限公司
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