A kind of preparation method of hydroxyl-modified polyaniline used as supercapacitor electrode material

A supercapacitor and hydroxyl modification technology, which is applied in the manufacture of hybrid capacitor electrodes and hybrid/electric double layer capacitors, etc., can solve the problems of low solubility of polyaniline, limited application, etc., to maintain the effect of hydroxyl modification, improve the reaction rate and The effect of efficiency

Active Publication Date: 2022-06-07
ANHUI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the low solubility of polyaniline in inorganic electrolytes limits its application in inorganic electrolytes.

Method used

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  • A kind of preparation method of hydroxyl-modified polyaniline used as supercapacitor electrode material

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Embodiment 1

[0024] Embodiment 1: A kind of preparation method of hydroxyl-modified polyaniline used as supercapacitor electrode material

[0025] A hydroxyl-modified polyaniline used as a supercapacitor electrode material and a preparation method thereof, comprising the following technical steps.

[0026] (1) Resonant sound mixing of aniline, glycerol and lactic acid

[0027] Aniline, glycerol, and lactic acid were mixed in a molar ratio of 1:1:(0.35), put into a resonance sound mixing device, and processed for 15 min under the conditions of a frequency of 100 Hz and an amplitude of 1 mm to obtain a mixed material.

[0028] Said, aniline is of industrial grade, and the purity is higher than 99.9%; glycerol is of industrial grade, and the purity is higher than 99.9%; and the lactic acid is of industrial grade, and the purity is higher than 85%.

[0029] (2) Ultrasonic treatment

[0030] Put the mixture in (1) into an ultrasonic environment at room temperature, using an ultrasonic frequen...

Embodiment 2

[0045] Embodiment 2: A kind of preparation method of hydroxyl-modified polyaniline used as supercapacitor electrode material

[0046] A preparation method of hydroxyl-modified polyaniline used as a supercapacitor electrode material, comprising the following steps:

[0047] Step 1: Mix aniline, glycerol and lactic acid in a molar ratio of 1:0.5:0.2, put them into a resonant sound mixing device, and process for 10min under the conditions of a frequency of 80Hz and an amplitude of 0.5mm to obtain a mixed material;

[0048] Step 2: ultrasonically treat the mixed material for 10min;

[0049] Step 3: Add the mixture obtained in Step 2 into a chemical reactor, and then the temperature of the chemical reactor is controlled to 4°C; add hydrochloric acid solution to the chemical reactor, to the temperature of the reaction system in the chemical reactor. pH value is 1.2;

[0050] Step 4: Add 25-75% alginic acid by mass of aniline into the reaction system of step 3, control the temperatur...

Embodiment 3

[0056] Embodiment 3: a kind of preparation method of hydroxyl-modified polyaniline used as supercapacitor electrode material

[0057] A preparation method of hydroxyl-modified polyaniline used as a supercapacitor electrode material, comprising the following steps:

[0058] Step 1: Aniline, glycerol and lactic acid are mixed in a molar ratio of 1:1.5:0.5, put into a resonance sound mixing device, and under the condition of frequency 120Hz, amplitude 2.0mm, process 20min to obtain a mixed material;

[0059] Step 2: ultrasonically treat the mixed material for 20min;

[0060] Step 3: add the mixture obtained in step 2 into a chemical reactor, and then control the temperature of the chemical reactor to be 6°C; add hydrochloric acid solution to the chemical reactor to reach the temperature of the reaction system in the chemical reactor. pH value is .5;

[0061] Step 4: Add 75% alginic acid by mass of aniline into the reaction system of step 3, control the temperature of the reacti...

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Abstract

The present invention provides a kind of preparation method of the hydroxyl-modified polyaniline that is used as supercapacitor electrode material, dissolves and modifies aniline by glycerin, lactic acid, alginic acid, β-cyclodextrin, thereby makes the polyaniline synthesized Hydroxyl groups are introduced into the long polymer chains to obtain hydroxyl-modified polyaniline. Hydroxyl-modified polyaniline has a significantly higher solubility in water than polyaniline; at the same time, the hydroxyl group can cause the electron gain and loss of the para-amino group on the aromatic ring to undergo a redox reaction. When the hydroxyl-modified polyaniline is used as a supercapacitor material, the capacitance is significant. Increase.

Description

technical field [0001] The invention belongs to the technical field of supercapacitors, and relates to a preparation method of hydroxyl-modified polyaniline used as an electrode material of supercapacitors. Background technique [0002] Supercapacitors have high specific capacitance, power density, energy density, excellent cycle stability, long cycle life and green environmental protection. Therefore, they are considered to be one of the most promising energy storage devices at present. [0003] Electrode materials are the main components of supercapacitors and determine the performance of supercapacitors. At present, the electrode materials used as supercapacitors are mainly divided into three categories: carbon materials, metal oxide and hydrate materials, and conductive polymer materials. Conductive polymers (polyaniline, polypyrrole, polythiophene, etc.) as supercapacitor electrode materials have the advantages of low cost, high capacity, short charge and discharge tim...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G73/02C08B37/16C08B37/04H01G11/86H01G11/48
CPCC08G73/0266C08B37/0012C08B37/0084H01G11/48H01G11/86Y02E60/13
Inventor 张忠洁宋文妹毛昌杰吴明元
Owner ANHUI UNIVERSITY
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