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Electrode material, its preparation method, its application and supercapacitor

A technology of electrode materials and conductive polymers, applied in the field of electrode materials and supercapacitor manufacturing, can solve the problems of high cost and large internal resistance of electrode materials.

Inactive Publication Date: 2017-09-05
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The main purpose of the present invention is to provide a kind of electrode material, its preparation method, its application and supercapacitor, to solve the problem of large internal resistance and high cost of electrode material in the prior art

Method used

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  • Electrode material, its preparation method, its application and supercapacitor
  • Electrode material, its preparation method, its application and supercapacitor
  • Electrode material, its preparation method, its application and supercapacitor

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preparation example Construction

[0040] In addition, the present invention also provides a method for preparing electrode materials, which includes the following steps: dissolving polyvinylidene fluoride-based polymers in a first organic solvent, and adding additives to obtain a first mixed solution; wherein the additives are alkali metal a salt and / or an alkaline substance; dissolving the conductive polymer in a second organic solvent to obtain a second mixed solution; and mixing the first mixed solution and the second mixed solution, and coating the obtained mixture on a substrate for drying, An electrode material is obtained; wherein, the first organic solvent and the second organic solvent are the same or different.

[0041] In the above preparation method provided by the present invention, the polyvinylidene fluoride-based polymer and the basic additive are dissolved in the first organic solvent, and then the conductive polymer is dissolved in the second organic solvent, and the two are mixed and then coa...

Embodiment 1

[0057] Weigh 0.2g of polyvinylidene fluoride, pour it into 6ml of NMP, heat and stir until completely dissolved, slowly add 0.5ml of ethanol solution of potassium hydroxide with a mass fraction of 6% (the quality of potassium hydroxide is 0.03g); weigh the polyvinylidene fluoride Dissolve 0.5g of aniline in 6ml of NMP and stir evenly, slowly add 2ml of dilute hydrochloric acid with a concentration of 2mol / L; mix the above two solutions and heat and stir until they are evenly mixed, and coat the evenly mixed liquid on the graphite paper substrate , dried at 80°C to obtain the electrode material;

[0058] The prepared electrode material was cut into two pieces with a size of 3.5cm×2cm, which were used as positive and negative electrodes respectively, and then the positive and negative electrodes faced each other, and the mixed solid electrolyte with a mass ratio of polyvinyl alcohol and phosphoric acid was 1:1. Or bonded, that is, prepared into a flexible solid supercapacitor. ...

Embodiment 2

[0060] Weigh 0.5g of polyvinylidene fluoride, pour it into 6ml of NMP, heat and stir until completely dissolved, slowly add an ethanol solution of potassium carbonate with a mass fraction of 6% (the quality of potassium carbonate is 0.063g); weigh 4.5g of polyaniline, Dissolve in 6ml of NMP and stir evenly, slowly add 2ml of dilute hydrochloric acid with a concentration of 2mol / L; mix the above two solutions and heat and stir until they are evenly mixed, and coat the evenly mixed liquid on a graphite paper substrate, at 80°C drying under the oven to obtain the electrode material;

[0061]The prepared electrode material was cut into two pieces with a size of 3.5cm×2cm, which were used as positive and negative electrodes respectively, and then the positive and negative electrodes faced each other, and the mixed solid electrolyte with a mass ratio of polyvinyl alcohol and phosphoric acid was 1:1. Or bonded, that is, prepared into a flexible solid supercapacitor. The cyclic volta...

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Abstract

The invention provides an electrode material, its preparation method, its application and a supercapacitor. The electrode material includes A component and B component, the A component includes polyvinylidene fluoride polymer and additive, the additive is alkali metal salt and / or alkaline substance; B component is conductive polymer. The polyvinylidene fluoride-based polymer in the above-mentioned electrode materials not only acts as a bonding agent for traditional electrode materials, but more importantly provides space for the transmission of conductive particles. Under the action of alkali metal salts and / or alkaline substances, activated carbon can be produced in polyvinylidene fluoride-based polymers, which has charge transport capabilities, which can reduce the volume change of conductive polymers during charge and discharge. performance loss. In addition, the conductive polymer in the electrode material is used as the conductive main component, and it has a high degree of fusion with the polyvinylidene fluoride-based polymer, so that there is a small contact resistance between the two.

Description

technical field [0001] The invention relates to the field of supercapacitor manufacturing, in particular to an electrode material, a preparation method thereof, an application thereof and a supercapacitor. Background technique [0002] Supercapacitor is a brand-new capacitor based on the interface electric double layer theory proposed by German physicist Helmholtz. As a new type of energy storage element, it has high specific power, high specific energy and short charging time. , long service life, energy saving and other characteristics. It has extremely broad application prospects in electric vehicles, mobile communications, aerospace, national defense and other fields, and is also a research hotspot in the field of new energy and electronic information. [0003] In supercapacitors, the electrode material is one of the core factors affecting the performance of supercapacitors, and it is also a hot spot in current supercapacitor research. From the perspective of materials...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/30H01G11/48H01G11/86
CPCY02E60/13
Inventor 朱基亮寇闯谢方圆朱峻成
Owner SICHUAN UNIV