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Polyaniline-bimetallic hydroxide supercapacitor material and preparation method thereof

A technology of supercapacitors and hydroxides, which is applied in the manufacture of hybrid/electric double layer capacitors and electrodes of hybrid capacitors. It can solve problems such as poor conductivity, reduced cycle stability and service life of electrode materials, and poor chemical stability. Effects of material stabilization, promotion of migration and transport efficiency, and improvement of electrical conductivity

Active Publication Date: 2020-01-10
绍兴市梓昂新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the deficiencies in the prior art, the present invention provides a polyaniline-double metal hydroxide supercapacitor material and its preparation method, which solves the problem of existing transition metal compounds such as MnO 2 , ZnO, Ni(OH) 2 The poor conductivity of materials such as electrode materials leads to the problems of specific capacitance and energy density of electrode materials, and at the same time solves the problem of poor chemical stability of conductive polymers in electrolytes, which reduces the cycle stability and service life of electrode materials.

Method used

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  • Polyaniline-bimetallic hydroxide supercapacitor material and preparation method thereof

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preparation example Construction

[0020] The preparation method of lanthanum-doped Co-Ag double metal hydroxide comprises the following steps:

[0021] (1) Add an appropriate amount of distilled water to the reaction flask successively, then add anhydrous cobalt chloride and silver nitrate and stir to dissolve, then add dehydrated alcohol and hexamethylenetetramine, the volume ratio of distilled water and dehydrated alcohol is 1.5- 2.5:1, slowly add sodium hydroxide, adjust the pH to 9-10, control the mass fraction of the total solute in the solution to be 3-12%, transfer the solution into the automatic hydrothermal reaction kettle after stirring, and raise the temperature to 120-135°C, stirring at a constant speed for 15-20h, after the reaction, cool the solution to room temperature and filter to remove the solvent, and wash the solid product with distilled water to obtain Co-Ag double metal hydroxide.

[0022] (2) Add an appropriate amount of distilled water to the automatic hydrothermal reaction kettle, the...

Embodiment 1

[0026] (1) Preparation of Co-Ag double metal hydroxide: Add appropriate amount of distilled water to the reaction flask in turn, then add anhydrous cobalt chloride and silver nitrate and stir to dissolve, then add absolute ethanol and hexamethylenetetramine, distilled water The volume ratio with absolute ethanol is 1.5-2.5:1, slowly add sodium hydroxide, adjust the pH to 9-10, control the mass fraction of the total solute in the solution to be 3-12%, and transfer the solution into the automatic In the hydrothermal reaction kettle, raise the temperature to 120-135°C, stir the reaction at a constant speed for 15-20h, after the reaction is completed, cool the solution to room temperature and filter to remove the solvent, and wash the solid product with distilled water to obtain Co-Ag double metal hydroxide 1 .

[0027](2) Preparation of lanthanum-doped Co-Ag double metal hydroxide: Add appropriate amount of distilled water to the automatic hydrothermal reaction kettle, then add l...

Embodiment 2

[0030] (1) Preparation of Co-Ag double metal hydroxide: Add appropriate amount of distilled water to the reaction flask in turn, then add anhydrous cobalt chloride and silver nitrate and stir to dissolve, then add absolute ethanol and hexamethylenetetramine, distilled water The volume ratio with absolute ethanol is 1.5-2.5:1, slowly add sodium hydroxide, adjust the pH to 9-10, control the mass fraction of the total solute in the solution to be 3-12%, and transfer the solution into the automatic In the hydrothermal reaction kettle, raise the temperature to 120-135°C, stir the reaction at a constant speed for 15-20h, after the reaction is completed, cool the solution to room temperature and filter to remove the solvent, and wash the solid product with distilled water to obtain Co-Ag double metal hydroxide 2 .

[0031] (2) Preparation of lanthanum-doped Co-Ag double metal hydroxide: add appropriate amount of distilled water to the automatic hydrothermal reaction kettle, then add ...

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Abstract

The invention relates to the technical field of supercapacitors, and discloses a polyaniline-bimetallic hydroxide supercapacitor material and a preparation method thereof. The polyaniline-bimetallic hydroxide supercapacitor material comprises the following formula raw materials: lanthanum doped Co-Ag bimetallic hydroxide, 2, 6-dinitroaniline and initiator. According to the polyaniline-bimetallic hydroxide supercapacitor material and the preparation method thereof, the Co-Ag bimetallic hydroxide lanthanum doped Co-Ag bimetallic hydroxide forms a layered structure and has a large specific surface area and pore size so as to make the charges move uniformly between the electrolyte and the electrode material, and Ag has a high conductivity so as to improve the conductivity of the electrode material and promote the transfer and transmission efficiency of the charges. The Polyaniline coated bimetallic hydroxide and the nitro group in the 2, 6-dinitroaniline have high electron adsorbing property so as to reduce the electron cloud density of C atom, improve the polarity of polyaniline and enhance the acid and alkali resistance and the chemical stability of polyaniline in the electrolyte.

Description

technical field [0001] The invention relates to the technical field of supercapacitors, in particular to a polyaniline-double metal hydroxide supercapacitor material and a preparation method thereof. Background technique [0002] Supercapacitor is a new type of energy storage device between rechargeable batteries and traditional capacitors. It not only has the characteristics of battery energy storage, but also has the characteristics of fast charge and discharge of capacitors. The interface is double-layered to store energy. When the electrode is in contact with the electrolyte, due to the action of Coulomb force, intermolecular force and interatomic force, a stable and opposite-signed double-layer interface double layer appears on the solid-liquid interface, which is added to the positive electrode. The potential on the plate attracts negative ions in the electrolyte, and the negative plate attracts positive ions, thus forming an electric double layer capacitor on the surf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/24H01G11/46H01G11/48H01G11/86
CPCH01G11/24H01G11/46H01G11/48H01G11/86Y02E60/13
Inventor 陈丰
Owner 绍兴市梓昂新材料有限公司
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