Super capacitor taking polyaniline/aligned carbon nanotube compound film as electrode and manufacturing method thereof

A technology of oriented carbon nanotubes and supercapacitors, applied in electrolytic capacitors, hybrid capacitor electrodes, capacitors, etc., can solve the problems of rare supercapacitors, flexible transparent supercapacitors with high electrical performance, etc., to improve cycle stability and good flexibility. and transparency, the effect of stable cycle performance

Active Publication Date: 2012-12-05
宁国市龙晟柔性储能材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, supercapacitors using aligned carbon nanotube composites are rare
On the other hand, flexible transparent supercapacitors, currently promising as unique integrated devices, have yet to achieve high electrical performance [12–18].

Method used

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  • Super capacitor taking polyaniline/aligned carbon nanotube compound film as electrode and manufacturing method thereof
  • Super capacitor taking polyaniline/aligned carbon nanotube compound film as electrode and manufacturing method thereof
  • Super capacitor taking polyaniline/aligned carbon nanotube compound film as electrode and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 1. Synthesis of aligned carbon nanotube arrays[19, 20]

[0030] Aligned carbon nanotube arrays with Fe(1.2nm) / Al 2 o 3 (3nm) / SiO2 2 / Si as a catalyst was synthesized using a typical chemical vapor deposition method in a quartz tube of a tube furnace. Al in the catalyst 2 o 3 Located in the middle of the silicon wafer and Fe, as a buffer layer, Fe as a catalyst, Al 2 o 3 and Fe are prepared by depositing a nanometer-thick film on a silicon wafer by an electron beam evaporation coater;

[0031] Using chemical vapor deposition method, using ethylene as carbon source, argon and hydrogen as carrier gas (gas flow: ethylene 90sccm, hydrogen 30sccm, argon 400sccm), synthesized spinnable aligned carbon nanotube arrays on Si substrate with oxide layer , the diameter of the obtained aligned carbon nanotubes is 12nm.

[0032] 2. Preparation of Polyaniline / Aligned Carbon Nanotube Films

[0033] a) Aligned carbon nanotube films were prepared by a dry spinning process. Using...

Embodiment 2

[0039] 1. Synthesis of aligned carbon nanotube arrays[19, 20]

[0040] Synthetic method is with embodiment 1, and wherein Fe particle diameter is 1.0nm, Al 2 o 3 The particle diameter is 2nm, the gas flow rate is: ethylene 85sccm, hydrogen 25sccm, argon 400sccm, and the diameter of the obtained aligned carbon nanotube array is 8nm.

[0041] 2. Preparation of Polyaniline / Aligned Carbon Nanotube Films

[0042] a) The aligned carbon nanotube film is prepared by a dry spinning process, the preparation method is the same as in Example 1, and the mass surface density of the obtained carbon nanotube film is: 1.30 μg / cm 2 ;

[0043] b) After the drawn carbon nanotube film, first coat one side with silver glue, and then coat the other side with two-component modified epoxy resin adhesive 504 glue and dry at 60-80°C;

[0044] c) preparation of electrolyte: method is the same as embodiment 1, and in the solution obtained, sulfuric acid concentration is 1.6M, and aniline concentration...

Embodiment 3

[0048] 1. Synthesis of aligned carbon nanotube arrays[19, 20]

[0049] Synthetic method is the same as embodiment 1, and wherein Fe particle diameter is 1.3nm, Al 2 o 3 The particle diameter is 3nm, the gas flow rate is: ethylene 95sccm, hydrogen 35sccm, argon 410sccm, and the diameter of the obtained aligned carbon nanotube array is 10nm.

[0050] 2. Preparation of Polyaniline / Aligned Carbon Nanotube Films

[0051] a) The aligned carbon nanotube film is prepared by a dry spinning process, the preparation method is the same as in Example 1, and the mass surface density of the obtained carbon nanotube film is: 1.50 μg / cm 2 ;

[0052] b) The drawn carbon nanotube film is first coated with silver glue on one side, and then coated with two-component modified epoxy resin adhesive 504 glue on the other side, and dried at 60-80°C for about 2 hours;

[0053] c) preparation of electrolyte: method is the same as embodiment 1, and in the solution obtained, sulfuric acid concentration...

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Abstract

The invention belongs to the technical field of super capacitors, in particular to a super capacitor taking a polyaniline/aligned carbon nanotube compound film as an electrode and a manufacturing method thereof. The method comprises the following steps of: adsorbing a polymer monomer onto the surface of a carbon tube by adopting an electrochemical polymerization method; and performing constant-potential electro-deposition of three electrodes in an aniline-sulfuric acid electrolyte to obtain the polyaniline/aligned carbon nanotube compound film. The super capacitor constructed by using the compound film as an electrode has high specific capacity and stable circulating performance; and meanwhile, the super capacitor has high flexibility and high transparency. The invention designs a method for manufacturing a flexible, transparent and efficient super capacitor.

Description

technical field [0001] The invention belongs to the technical field of supercapacitors, and in particular relates to a flexible and transparent high-efficiency supercapacitor and a preparation method thereof. Background technique [0002] Conductive polymers such as polyaniline, polypyrrole, and poly(3,4-ethylenedioxythiophene) have been widely used as electrode materials for electrochemical supercapacitors due to their high pseudocapacitance and low cost of preparation [1 -7]. However, the large volume change caused by repeated intercalation during the charge and discharge process leads to a rapid decay of the capacity of the capacitor [8]. Carbon nanotubes (CNTs) are widely used in supercapacitors to improve their performance due to their high specific surface area and mechanical strength, good electrical conductivity and chemical stability [9,10]. However, when random carbon tubes are used, the generated charges must cross the random CNT network [11], which reduces the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/058H01G9/155
CPCY02E60/13H01G11/36
Inventor 彭慧胜林惠娟李立
Owner 宁国市龙晟柔性储能材料科技有限公司
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