Preparation method for polyaniline/graphene/nano-copper composite material

A composite material, graphene technology, applied in electrolytic capacitors, electrical components, circuits, etc., can solve the problem of low specific capacitance and achieve the effect of increasing the contact area

Inactive Publication Date: 2013-07-10
HEILONGJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that the existing polyaniline is used as a supercapacitor electrode material with a low specific capacitance value, and to provide a preparation method of polyaniline / graphene / nano-copper composite material

Method used

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  • Preparation method for polyaniline/graphene/nano-copper composite material
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  • Preparation method for polyaniline/graphene/nano-copper composite material

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specific Embodiment approach 1

[0022] Specific embodiment one: the preparation method of polyaniline / graphene / nano-copper composite material of this embodiment is realized according to the following steps:

[0023] 1. Add 15mL of graphene oxide to 50mL of copper sulfate solution with a concentration of 0.05mol / L, ultrasonicate for 30-40min to obtain a mixed solution, then add 25mL of NaOH solution with a concentration of 2mol / L and 25ml of NaOH solution with a concentration of 3mol / L hydrazine hydrate solution, and reacted at 70°C and a stirring speed of 300r / min for 4h, cooled to room temperature, filtered and washed the product, and vacuum-dried at room temperature for 24h to obtain a graphene / nano-copper composite material;

[0024] 2. Dissolve 1.0g of aniline in 15mL of hydrochloric acid solution with a concentration of 1.5mol / L, then add 0.1g of graphene / nano-copper composite material and sonicate for 30-40min, then add dropwise 10mL of persulfuric acid with a concentration of 1mol / L Ammonium solution ...

specific Embodiment approach 2

[0027] Embodiment 2: This embodiment differs from Embodiment 1 in that the ultrasonic power in step 1 is 500W. Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0028] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the ultrasonic power in step 2 is 500W. Other steps and parameters are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

The invention relates to a preparation method for a polyaniline / graphene / nano-copper composite material and relates to the field of capacitor electrode materials. The invention aims to solve the problems of low specific capacitance value, low electrochemical utilization ratio and rapid attenuation of capacity caused by the fact that polyaniline serves as the electrode material of a supercapacitor. The method comprises the following steps: 1, adding graphene oxide into a copper sulfate solution, adding a NaOH solution and a hydrazine hydrate solution, cooling to room temperature after reaction, performing suction filtration on the product, completely washing the product and drying to obtain a graphene / nano-copper composite material; and 2, dissolving polyaniline in a hydrochloric acid solution, adding the graphene / nano-copper composite material, then adding an ammonium sulfate solution, performing suction filtration on the product after reaction, completely washing the product and drying. In the polyaniline / graphene / nano-copper composite electrode material prepared by an in-situ polymerization method, when the doping amount of a nano-copper / carbon nanotube is 10 percent of the weight of the polyaniline, the specific capacitance value is up to 577.92 F / g.

Description

technical field [0001] The invention relates to a chemical preparation method of polyaniline / graphene / nanometer copper composite material, which is core-shell type and used in the field of capacitor electrode materials. Background technique [0002] Polyaniline is a conductive polymer with high Faradaic pseudocapacitance. It has doping / dedoping properties, high specific surface area, simple preparation process, low cost, and high yield, making it an ideal supercapacitor electrode material. However, the disadvantages of low electrochemical utilization and rapid capacity decay limit its practical application. [0003] Graphene is an electrode material of a typical electric double layer capacitor. The carbon atoms on the surface form two large π bonds up and down to form the double electron layer of graphene. With its high strength, high specific surface area and excellent electrochemical performance And famous. The high specific surface area can be used as a carrier to depos...

Claims

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Application Information

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IPC IPC(8): C08G73/02C08K9/02C08K7/00C08K3/04H01G9/042
CPCY02E60/13
Inventor赵东宇王玉凤闫飞王琳
OwnerHEILONGJIANG UNIV