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A kind of preparation method of capacitor electrode material

A capacitor electrode and injector technology, which is used in the manufacture of hybrid capacitor electrodes and hybrid/electric double-layer capacitors, can solve the problems of no significant increase in specific capacitance, harsh conditions, and complicated steps, and achieve good current charging and discharging. The effect of ability, short process and simple preparation process

Inactive Publication Date: 2018-02-16
NORTHEAST NORMAL UNIVERSITY
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

The currently obtained nitrogen-doped porous carbon materials with high specific surface area are either carbon materials dominated by microporous structure. Although they have high specific surface area, the specific capacitance has not been greatly improved; or they involve cumbersome steps. , complex process, harsh conditions and high cost limit its further application in supercapacitors

Method used

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  • A kind of preparation method of capacitor electrode material
  • A kind of preparation method of capacitor electrode material
  • A kind of preparation method of capacitor electrode material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Weigh 1.5g of polyacrylonitrile polymer and dissolve it in 10ml of N,N dimethylformamide solution, stir for 24h until uniform and transparent.

[0024] (2) Electrospinning the precursor solution in step (1) to prepare polyacrylonitrile nanofibers. Pour approximately 2 ml of the above solution into a medical syringe each time (note: the volume of the syringe is 10 ml; the length of the needle of the syringe is 2.5 cm; the outer diameter of the tip of the syringe is 0.7 mm). The distance between the syringe tip and the collecting plate was 15-20 cm, and the electrode voltage was 10 kV for spinning to obtain a uniform polyacrylonitrile nanofiber cloth with a diameter of about 300-400 nm.

[0025] (3) Dissolve 1.5g of anhydrous ferric chloride and 0.5ml of concentrated hydrochloric acid in 30ml of deionized water and stir for 30 minutes to prepare a mixed aqueous solution of ferric chloride and hydrochloric acid. Put the polyacrylonitrile nanofiber cloth (note: 1cm*2cm...

Embodiment 2

[0029] Example 2: The difference between this example and Example 1 is that the amount of aniline monomer in step (3) is 0.2ml. Others are the same as in Example 1.

Embodiment 3

[0030] Example 3: The difference between this example and Example 1 is that the amount of aniline monomer in step (3) is 0.8ml. Others are the same as in Example 1.

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Abstract

The present invention provides a preparation method of nitrogen-doped porous carbon nanofiber material with high specific surface area. Electrospun polyacrylonitrile / polyaniline composite nanofibers are treated at an appropriate temperature in an inert atmosphere to obtain high specific surface area carbon nanofibers. Nitrogen-doped porous carbon nanofibrous materials. Compared with the prior art, the invention directly uses electrospun polyacrylonitrile nanofibers as a base to grow polyaniline nanowires to synthesize electrospun polyacrylonitrile / polyaniline composite nanofibers. In addition to the high content of nitrogen atoms, the composite nanofiber also has a rich pore structure on its surface. The composite nanofiber can obtain nitrogen-doped porous carbon nanofiber material with high specific surface area after heat treatment. The material is an electrode material of a supercapacitor and has very good electrochemical properties. In particular, the preparation method of the supercapacitor electrode material of the present invention has simple preparation process, short process, low equipment dependence, and is suitable for large-scale industrial production.

Description

technical field [0001] The invention belongs to the technical field of electrochemical capacitors, in particular to a method for preparing capacitor electrode materials. Background technique [0002] As people pay more and more attention to environmental protection and constantly seek clean and efficient forms of renewable energy utilization, supercapacitors have huge potential applications not only in new energy devices such as hybrid vehicles because they have the advantages of both batteries and traditional capacitors Value, also plays an important role in communications, aerospace, national defense, etc., and therefore has become the object of concern and research and development of the majority of scientific research workers. [0003] As a key component of supercapacitors, electrode materials determine the basic characteristics of supercapacitors. Carbon materials are often used as supercapacitor electrode materials because of their cheap and easy availability, wide op...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/24H01G11/86H01G11/38
CPCY02E60/13
Inventor 邵长路苗富军李兴华张昕彤刘益春
Owner NORTHEAST NORMAL UNIVERSITY
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