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Preparation method of super capacitor based on one-dimensional metal-carbon nano tube coaxial heterojunction

A coaxial heterojunction, carbon nanotube technology, applied in the fields of nanotechnology and energy storage, can solve the problems of poor orientation of carbon nanotubes, limited practical application, high filling rate, etc., to reduce contact resistance and shorten charging and discharging time. , reduce the effect of bad contact

Inactive Publication Date: 2012-01-18
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantage of this method is that the orientation of carbon nanotubes is poor, and due to the limitation of the iron-carbon ratio of ferrocene itself, it is difficult to obtain a higher filling rate by applying this method
Other one-step methods such as arc discharge also have the disadvantages of poor orientation and low filling rate, which limits the practical application of this type of method

Method used

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  • Preparation method of super capacitor based on one-dimensional metal-carbon nano tube coaxial heterojunction
  • Preparation method of super capacitor based on one-dimensional metal-carbon nano tube coaxial heterojunction
  • Preparation method of super capacitor based on one-dimensional metal-carbon nano tube coaxial heterojunction

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Effect test

Embodiment 1

[0032] like figure 1 As shown, a layer of silver film 2 is plated on one side of the through-hole anodized aluminum template 1 using a magnetron sputtering coating machine, as an electrode for electrochemical deposition. Silver film 2 was chosen because of the greater conductivity of silver.

[0033] The above-mentioned anodized aluminum oxide template 1 is used as the cathode, and the silver single substance sheet is used as the anode, and silver nanowires 3 are deposited in the pores of the anodized aluminum oxide template 1 by electrochemical deposition. The composition of the electroplating solution is: 15g L -1 C 6 h 8 o7 ·H 2 O, 4g L -1 AgNO 3 , 20g·L -1 MgSO 4 , The deposition voltage is 0. 4V, and the deposition time is 15min. After removal, rinse with deionized water and dry.

[0034] Use a phosphoric acid solution with a temperature of 50°C and a volume ratio of 5% to expand the pores of the anodized aluminum template 1 that has been deposited with silver ...

Embodiment 2

[0040] like figure 1 As shown, a layer of silver film 2 is plated on one side of the through-hole anodized aluminum template 1 using a magnetron sputtering coating machine, as an electrode for electrochemical deposition. Silver film 2 was chosen because of the greater conductivity of silver.

[0041] The above-mentioned anodized aluminum oxide template 1 is used as the cathode, and the silver single substance sheet is used as the anode, and silver nanowires 3 are deposited in the pores of the anodized aluminum oxide template 1 by electrochemical deposition. The composition of the electroplating solution is: 15g L -1 C 6 h 8 o 7 ·H 2 O, 4g L -1 AgNO 3 , 20g·L -1 MgSO 4 , The deposition voltage was 0.3V, and the deposition time was 30min. After removal, rinse with deionized water and dry.

[0042] Use a phosphoric acid solution with a temperature of 50°C and a volume ratio of 10% to expand the pores of the anodized aluminum template 1 that has been deposited with sil...

Embodiment 3

[0048] like figure 1 As shown, a layer of silver film 2 is plated on one side of the through-hole anodized aluminum template 1 using a magnetron sputtering coating machine, as an electrode for electrochemical deposition. Silver film 2 was chosen because of the greater conductivity of silver.

[0049] The above-mentioned anodized aluminum oxide template 1 is used as the cathode, and the silver single substance sheet is used as the anode, and silver nanowires 3 are deposited in the pores of the anodized aluminum oxide template 1 by electrochemical deposition. The composition of the electroplating solution is: 15g L -1 C 6 h 8 o 7 ·H 2 O, 4g L -1 AgNO 3 , 20g·L -1 MgSO 4 , the deposition voltage is 0.6V, and the deposition time is 15min. After removal, rinse with deionized water and dry.

[0050] Use a phosphoric acid solution with a temperature of 50°C and a volume ratio of 5% to expand the pores of the anodized aluminum template 1 that has been deposited with silver...

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Abstract

The invention discloses a preparation method of a super capacitor based on a one-dimensional metal-carbon nano tube coaxial heterojunction. The preparation method comprises the steps of: 1, depositing a metal nano wire in an anodised aluminium template by using electrochemical deposition; 2, chambering the anodised aluminium template by using low-concentration acid-base; 3, growing a carbon nano tube by using the chambered anodised aluminium template through applying chemical vapor deposition; 4, depositing a silver film at one side of the anodised aluminium template, wherein the metal nano wire is deposited at the side of the anodised aluminium template; 5, dissolving the anodised aluminium template by using an acid or base solution with stronger corrosion capacity to Al2O3; and 6, constructing the super capacitor by using the metal nano wire and the silver film jointly as a collector and the carbon nano tube as an electrode. The collector and the electrode of the super capacitor prepared by the invention are ordered in height, thus filling rate of metal in the carbon nano tube is increased to ensure that the metal is in surface contact with the carbon nano tube, charge and discharge current density of the super capacitor is increased, charge and discharge time is shortened, and energy storage density is increased.

Description

technical field [0001] The invention belongs to the field of nanotechnology and energy storage, and in particular relates to a method for preparing a supercapacitor based on a one-dimensional metal / carbon nanotube coaxial heterojunction. Background technique [0002] Energy storage is an important issue in energy utilization. The emergence of supercapacitors has suddenly increased the limit capacity of capacitors by 3-4 orders of magnitude, reaching a large capacity of nearly 1000F / g. It is a new type of high-power energy storage device between batteries and traditional capacitors. It has higher power density than batteries and higher energy density than traditional capacitors. High, long cycle life and other advantages. Therefore, supercapacitors have extremely important and broad application prospects in mobile communications, information technology, aerospace and defense technology. Research on the development of supercapacitors with higher energy density is an importan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/004H01G9/04H01G9/042
CPCY02E60/13
Inventor 张迎九米振宇王瑞丽陈厚尊金亮亮黄迪
Owner ZHENGZHOU UNIV
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