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Method for preparing polymer electrode material for supercapacitor

A technology for supercapacitors and electrode materials, applied in the field of capacitors, can solve the problems of low volume energy density of supercapacitors, and achieve the effects of reducing ion transmission impedance, improving cycle life, and reducing polarization impedance.

Inactive Publication Date: 2012-08-01
SICHUAN JIUXIN TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the inherent defects of the activated carbon electrode material itself, its gram capacity in the aqueous electrolyte is usually around 200F / g, which makes the volume energy density of the manufactured supercapacitor low, which cannot further meet the market's demand for high energy density of supercapacitors.

Method used

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  • Method for preparing polymer electrode material for supercapacitor
  • Method for preparing polymer electrode material for supercapacitor
  • Method for preparing polymer electrode material for supercapacitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] First use 100g nano carbon black with 20%HNO 3 Repeated washing, filtering and washing until the washing water is neutral, add 460ml of aniline monomer and 1100g of ammonium persulfate to 1L of 1M hydrochloric acid solution, stir well, add carbon black to the mixed solution of aniline monomer and hydrochloric acid, and add Dispersant Dispersed with a small amount of ethanol, ultrasonically dispersed for 0.5h, so that the carbon black is completely dispersed in the aniline solution, transferred to an ice bath for stirring, and the temperature is controlled below 4°C; at the same time, slowly drop into the hydrochloric acid solution in which ammonium persulfate is dissolved. When the titration started, a black-green precipitate appeared in the container, the reaction time was controlled to be 5 hours, and the mass percentage of carbon black in the composite electrode material was 5%. After the reaction is over, filter the precipitate, wash it with deionized water until it...

Embodiment 2

[0030] Others are the same as in Example 1, except that the pyrrole monomer is replaced by aniline monomer, and the filtered precipitate is dried at 70° C. for 40 hours.

Embodiment 3

[0032] Others are the same as in Example 1, except that the dispersant ethanol is replaced by a mixed solution of acetone and ethanol, and the filtered precipitate is dried at 60° C. for 30 hours.

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Abstract

The invention provides a method for preparing a polymer electrode material for a supercapacitor. According to the method disclosed by the invention, phenylamine or pyrrole monomer is taken as a raw material, and the sphere-like polymer electrode material with uniform particle size distribution is obtained by adding a nanometer carbon material in a polymer preparation process and controlling polymerization conditions of macromolecules so as to subjecting the polymer electrode material to in-situ polymerization and uniform coating on the surface of the nanometer carbon material; and the supercapacitor manufactured by using the polymer electrode material has the advantages of high specific capacitance, small internal resistance and good cycle performance.

Description

technical field [0001] The invention belongs to the technical field of capacitors, and in particular relates to a preparation method of a polymer electrode material for a super capacitor. Background technique [0002] In recent years, as a new type of energy device, supercapacitors have been widely used in consumer electronics, solar energy industry, electric vehicles, and national defense industry. Electrode materials are the key factors determining the performance of supercapacitors. At present, the electrode materials for supercapacitors used in large-scale commercial applications are mainly carbon electrode materials. Due to the inherent defects of the activated carbon electrode material itself, its gram capacity in the aqueous electrolyte is usually around 200F / g, which makes the volume energy density of the manufactured supercapacitor low, which cannot further meet the market's demand for high energy density of supercapacitors. . [0003] Conductive polymer electrod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/042
CPCY02E60/13
Inventor 李晶李信绪明王耀华杜开立颜传彬熊天才
Owner SICHUAN JIUXIN TECH GRP
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