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A kind of preparation method of conductive polymer carbon material composite film

A technology of conductive polymers and composite films, which is applied in the manufacture of hybrid/electric double layer capacitors and electrodes of hybrid capacitors. It can solve the problems of the size limitation of synthesized products, the difficulty of accurately controlling the content and dispersion of CNTs, and achieve energy storage. Enhanced performance, high polymerization efficiency, and improved overall electrical conductivity

Active Publication Date: 2020-12-15
WUHAN BUSINESS UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it is difficult to precisely control the content and dispersion of CNTs in the composites synthesized by these two methods, and the size of the synthesized product will be limited by the size of the electrode.

Method used

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  • A kind of preparation method of conductive polymer carbon material composite film
  • A kind of preparation method of conductive polymer carbon material composite film
  • A kind of preparation method of conductive polymer carbon material composite film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 1.1 Raw materials

[0032] Pyrrole (Pyrrole, Py); multi-walled carbon nanotubes (MWCNTs, diameter 10-20nm, length 10-30μm, purity >95%); perchloric acid (HClO 4 ); chloroform (CHCl) 3 ); concentrated sulfuric acid (H 2 SO 4 ).

[0033] 1.2 Preparation of hydroxylated MWCNTs and assembly of carbon nanotubes at oil / water interface (multi-walled carbon nano-MWCNTs)

[0034] 1.2.1 Preparation of hydroxylated MWCNTs

[0035] Take a certain amount of MWCNTs and put it in a 250mL round-bottomed flask, add 100mL of concentrated sulfuric acid and concentrated nitric acid in a volume ratio of 1:3, shake gently, heat to 140°C, reflux for about 3 hours, cool and filter with suction, the filter cake is used up Washed with ionized water to neutrality, and vacuum-dried at 50 °C for 24 h to obtain hydroxylated MWCNTs, denoted as FCNTs. The acidified FCNTs were ultrasonically dispersed in secondary water to obtain a colloidal aqueous solution of FCNTs. Take 10 mL of FCNTs aqueous...

Embodiment 2

[0045] The steps are the same as above, except that an appropriate content of FCNTs aqueous solution is added in step 3), so that the dispersion concentration at the oil-water interface is 0.033 μg·mm -2 , set aside for use.

Embodiment 3

[0047] The steps are the same as above, except that an appropriate content of FCNTs aqueous solution is added in step 3), so that the dispersion concentration at the oil-water interface is 0.132 μg·mm -2 , set aside for use.

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Abstract

The invention discloses a preparation method of a conductive polymer carbon material composite thin film; the preparation method comprises the following steps of step 1), preparation of a colloidal water solution of hydroxylated multi-walled carbon nano tubes; step 2), assembling of a carbon nano tube oil / water interface; and step 3), electrochemical synthesis of the conductive polymer carbon material composite thin film. By virtue of the PPY / FCNTs composite film, performance complementation of PPY and FCNTs can be realized, and the overall conductivity, the charge migration rate and the stability of the of the composite film are improved; and meanwhile, the composite film has a special three-dimensional net structure, so that the migration of electrons and ions in the charging and discharging process is facilitated, and the energy storage performance is obviously enhanced.

Description

technical field [0001] The invention relates to the field of preparation of conductive thin films. More specifically, the present invention relates to a preparation method of a conductive polymer carbon material composite film. Background technique [0002] Conductive polymers, such as polyaniline (PANI), polypyrrole (PPY), poly-3,4-ethylenedioxythiophene (PEDOT), etc., have good conductivity, high charge storage capacity, and environmental friendliness in the doped state Stability and excellent reversibility [1-3] It is widely used in energy storage and other fields, such as supercapacitors, solar cells, etc. However, the conductive polymer electrode material is prone to swelling and shrinkage during the charging and discharging process, which makes the mechanical properties of the conductive polymer-based electrode deteriorate and the capacitive performance attenuates during the cycle of use. At present, nanomaterials with large specific surface area, high conductivity ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/24H01G11/30H01G11/36H01G11/48H01G11/86
CPCH01G11/24H01G11/30H01G11/36H01G11/48H01G11/86Y02E60/13
Inventor 李闽
Owner WUHAN BUSINESS UNIV