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Preparation method of electrospun carbon nanofiber/reduced graphene oxide/polyaniline/basic nickel carbonate composite electrode material

A carbon nanofiber and composite electrode technology, applied in graphene, carbon fiber, nanocarbon, etc., can solve the problems of unfavorable supercapacitor application, easy agglomeration, low conductivity, etc.

Active Publication Date: 2021-04-30
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, soda carbonate usually has problems such as low conductivity and easy agglomeration, which is not conducive to the application of supercapacitors.

Method used

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  • Preparation method of electrospun carbon nanofiber/reduced graphene oxide/polyaniline/basic nickel carbonate composite electrode material
  • Preparation method of electrospun carbon nanofiber/reduced graphene oxide/polyaniline/basic nickel carbonate composite electrode material
  • Preparation method of electrospun carbon nanofiber/reduced graphene oxide/polyaniline/basic nickel carbonate composite electrode material

Examples

Experimental program
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Effect test

Embodiment 1

[0038] Step 1, preparation of electrospun carbon nanofiber / reduced graphene oxide (GCNF) electrode material:

[0039]First, add 1 g of polyacrylonitrile powder into 10 mL of N,N-dimethylformamide solution, heat in an oil bath at 80°C for 2 hours and stir at room temperature for 12 hours to obtain a uniform spinning solution; put the spinning solution into a syringe, Electrospinning was carried out at a voltage of 15kV, the distance between the spinning needle and the receiver was 20cm, and the injection speed was 2mL / h, and the electrospun film was collected; Pre-oxidize in the furnace, the heating time is 200min, the heating temperature is 250°C, and the holding time is 60min. The pre-oxidized film is soaked in 1mg / mL graphene oxide solution for two days, and the film is taken out and rinsed with ethanol for 3 -5 times, and dried in an oven at 50°C to obtain an electrospun film coated with a graphene oxide sheet; carbonize the film in a tube furnace under a nitrogen atmospher...

Embodiment 2

[0053] Step 1. Preparation of electrospun carbon nanofiber / reduced graphene oxide electrode material:

[0054] First, add 1 g of polyacrylonitrile powder into 10 mL of N,N-dimethylformamide solution, heat in an oil bath at 80°C for 2 hours and stir at room temperature for 14 hours to obtain a uniform spinning solution; put the spinning solution into a syringe , at a voltage of 18kV, the distance between the spinning needle and the receiver is 18cm, and the injection speed is 2.5mL / h, electrospinning is carried out, and the electrospun film is collected; the obtained electrospun film is placed in an air atmosphere at Carry out pre-oxidation in a tube furnace, the heating time is 200min, the heating temperature is 250°C, and the holding time is 60min. The pre-oxidized film is soaked in 1mg / mL graphene oxide solution for three days, and the film is taken out with ethanol Rinse 3-5 times, and dry in an oven at 50°C to obtain an electrospun membrane coated with graphene oxide sheet...

Embodiment 3

[0060] Step 1. Preparation of electrospun carbon nanofiber / reduced graphene oxide electrode material:

[0061] First, add 1 g of polyacrylonitrile powder into 10 mL of N,N-dimethylformamide solution, heat in an oil bath at 80°C for 2 hours and stir at room temperature for 10 hours to obtain a uniform spinning solution; the clear and transparent spinning solution Put it into the syringe, carry out electrospinning at a voltage of 13kV, the distance between the spinning needle and the receiver is 15cm, and the injection speed is 1.8mL / h, and collect the electrospun film; Pre-oxidize in a tube furnace under an air atmosphere, the heating time is 200min, the heating temperature is 250°C, and the holding time is 60min. The pre-oxidized film is soaked in 1 mg / mL graphene oxide solution for 2.5 days, and the The membrane was taken out and rinsed with ethanol for 3-5 times, and dried in an oven at 50°C to obtain an electrospun membrane coated with graphene oxide sheets; the membrane wa...

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Abstract

The invention belongs to the technical field of energy materials, and relates to a preparation method and application of an electrospun carbon nanofiber / reduced graphene oxide / polyaniline / basic nickel carbonate composite electrode material. The preparation method comprises the following steps of firstly, preparing a polyacrylonitrile electrospun membrane through an electrostatic spinning method, and carrying out pre-oxidation, graphene oxide solution soaking, carbonization and other steps to obtain electrospun carbon nanofiber / reduced graphene oxide; then successfully coating polyaniline on the basis of the previous step through an in-situ polymerization method; and finally regulating and controlling the hydrothermal time and the concentration through a hydrothermal reaction to obtain the electrospun carbon nanofiber / reduced graphene oxide / polyaniline / basic nickel carbonate composite electrode material. The composite electrode material prepared by the method is not reported in literature, and the method is simple and convenient and easy to operate; and the obtained material has the advantages of stable morphology, high specific surface area, high conductivity, more active sites, excellent electrochemical energy storage performance, and good mechanical stability and electrochemical cycling stability.

Description

technical field [0001] The invention belongs to the technical field of energy materials, and in particular relates to a method for preparing an electrospun carbon nanofiber / reduced graphene oxide / polyaniline / basic nickel carbonate composite electrode material. Background technique [0002] In recent years, with the continuous reduction of fossil energy and the aggravation of environmental pollution, it is imminent to find efficient and green energy storage devices. Supercapacitors, also known as electrochemical capacitors, are widely concerned by countries all over the world because of their higher power density, energy density, high-speed characteristics and long life than batteries and conventional capacitors, and are considered to be the most promising energy storage one of the systems. According to the energy storage mechanism, supercapacitors are classified into two categories, including electric double-layer capacitors (EDLCs) and pseudocapacitors. EDLC results from ...

Claims

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Application Information

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IPC IPC(8): D06M11/74D06M11/76D06M15/61H01G11/36H01G11/86C01B32/15C01B32/19D01F9/22B82Y30/00B82Y40/00D06M101/40
CPCD06M11/74D06M15/61D06M11/76H01G11/86H01G11/36C01B32/15C01B32/19D01F9/225B82Y30/00B82Y40/00D06M2101/40Y02E60/13
Inventor 赵岩王亚清王思超郑吉华刘文杰胡金枝黄云鹏连加彪
Owner JIANGSU UNIV
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