A kind of symmetrical button supercapacitor electrode material and symmetrical button supercapacitor

A technology for supercapacitors and electrode materials, applied in the field of symmetrical button supercapacitors and electrode materials for symmetrical button supercapacitors, can solve the problems of low specific capacity, insufficient electrochemical activity, and low energy density, and achieve The effect of uniform particles, broad application market, and large specific surface area

Active Publication Date: 2018-08-10
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the defects of low specific capacity, low energy density and insufficient electrochemical activity in existing activated carbon electrode materials, the purpose of the present invention is to provide a trivalent cerium ion-doped polymer with large specific capacity and high electrochemical activity. Symmetric button-type supercapacitor electrode material with aniline hollow microspheres as the active material

Method used

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  • A kind of symmetrical button supercapacitor electrode material and symmetrical button supercapacitor
  • A kind of symmetrical button supercapacitor electrode material and symmetrical button supercapacitor
  • A kind of symmetrical button supercapacitor electrode material and symmetrical button supercapacitor

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Embodiment 1

[0040]Take 6.32g of absolute ethanol, 72.00g of water, and 2.08g of an aqueous solution containing poly(2-acrylamido-2-methylpropanesulfonic acid) (referred to as PAMPS, with a mass fraction of 20%) into a 250mL beaker, and stir well . Subsequently, 1.86 g of aniline was added to the above mixture, and after ultrasonication for 10 minutes, the temperature of the above mixture containing aniline was raised to 80° C., and magnetically stirred at this temperature for 10 minutes. Quickly add 40mL aqueous solution containing 4.56g of ammonium persulfate at 80°C to the above mixed solution containing aniline, and react at a constant temperature of 80°C for 60s under stirring conditions. Subsequently, the reaction system was placed in an ice-water bath at a temperature of 0-5° C. to continue the reaction for 12 h. The polyaniline hollow microspheres are obtained by using acetone to break the emulsion, washing with water and suction filtering. The obtained polyaniline hollow microsp...

Embodiment 2

[0044] The polyaniline microspheres that are doped with trivalent cerium ions on the surface obtained in Example 1 are used for the composition of the button type supercapacitor:

[0045] Mix cerium-doped polyaniline hollow microspheres, acetylene black, and polytetrafluoroethylene emulsion at a mass ratio of 75:15:10, add a small amount of absolute ethanol to adjust, and ultrasonicate for 10 minutes. The excess ethanol was removed from the sonicated slurry, and then rolled into thin slices with a thickness of about 0.2 mm. Use a die to stamp the sheet into a disc with a diameter of 10 mm, and dry it in vacuum at 70° C. for 12 hours to obtain a pole piece. Two pole pieces with the same mass are used as the positive and negative electrodes of the capacitor respectively, and a layer of non-woven fiber cloth is sandwiched in the middle as the diaphragm, and the 1mol / L H 2 SO 4 As an electrolyte, according to image 3 The form is assembled into a 2016-type button capacitor.

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Abstract

The invention discloses a symmetrical button type supercapacitor electrode material and a symmetrical button type supercapacitor. The electrode material comprises a polyaniline hollow microballoon active substance whose surface is doped with trivalent cerium ions. The material has the advantages of large specific capacity, high energy density, high electrochemical activeness and the like, can be applied to preparation of an electrode slice material of a symmetrical button type supercapacitor, and can obtain a symmetrical button type supercapacitor advantaged in large specific capacity, small AC impedance and good voltage maintenance capability.

Description

technical field [0001] The invention relates to a symmetrical button-type supercapacitor electrode material with polyaniline hollow microspheres doped with trivalent cerium ions on the surface as an active material, and a symmetrical button-type supercapacitor made of the electrode material. It belongs to the field of chemical capacitors. Background technique [0002] Energy crisis and environmental protection have gradually become two major problems in the 21st century. In order to alleviate the increasingly severe energy crisis and a series of environmental problems arising from it, countries all over the world are actively developing new energy industries. Renewable energy sources such as wind energy, solar energy and tidal energy have received a lot of attention. However, these energy sources are often affected by external conditions (such as weather, climate, and geography) and present instability and discontinuity. To solve this problem, it is necessary to develop r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/48H01G11/24
CPCY02E60/13
Inventor 李芝华李彦博
Owner CENT SOUTH UNIV
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