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Poly 3,4-ethylenedioxy thiophene composite and preparation method thereof

A technology of dioxyethylene thiophene and composite materials, applied in the field of poly-3, to achieve the effects of low production cost, excellent cycle stability and high specific capacity

Inactive Publication Date: 2012-07-11
天津都创科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The dopants that have been reported so far include polystyrene sulfonate, p-toluenesulfonic acid, etc., but only a single dopant is used at present, and the reported specific capacity is only 100F / g

Method used

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  • Poly 3,4-ethylenedioxy thiophene composite and preparation method thereof
  • Poly 3,4-ethylenedioxy thiophene composite and preparation method thereof
  • Poly 3,4-ethylenedioxy thiophene composite and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Dissolve 1 mole of sulfamic acid in distilled water to form a solution with a molar concentration of 0.5 mol / L, add 1 mole of 3,4-dioxyethylenethiophene, and stir until the two are evenly mixed to form a transparent emulsion; add 4L molar concentration 8mol / L FeCl 3 Aqueous solution, control the temperature of the system between 25-35 °C for 36 hours; pour the reaction solution into acetone, filter, wash the filter cake with 33% alcohol solution until the filtrate cannot change the color of phenol, wash the filter cake with distilled water, and dry it in vacuum. Grinding to obtain poly-3,4-dioxyethylenethiophene composite material doped with sulfamic acid.

[0018] Mix the prepared poly(3,4-dioxyethylenethiophene) composite material with conductive carbon black and 60wt% polytetrafluoroethylene emulsion in a mass ratio of 80:15:5, add an appropriate amount of absolute ethanol and ultrasonically vibrate until the mixture becomes a paste shape, the paste mixture was even...

Embodiment 2

[0020] Dissolve 1 mole of camphorsulfonic acid in distilled water to form a solution with a molar concentration of 0.25 mol / L, add 2 moles of 3,4-dioxyethylenethiophene, and stir until the two are evenly mixed to form a transparent emulsion; add 2.5 L molar FeCl with a concentration of 8mol / L 3 Aqueous solution, control the temperature of the system between 25-35 °C for 41 hours; pour the reaction solution into acetone, filter, wash the filter cake with 33% alcohol solution until the filtrate cannot change the color of phenol, wash the filter cake with distilled water, and dry it in vacuum. Grinding to obtain camphorsulfonic acid-doped poly-3,4-dioxyethylenethiophene composite material.

[0021] The electrochemical performance test method is the same as in Example 1. The results show that the specific capacity of the obtained electrode material is 150F / g, and the charge-discharge efficiency is 94%.

Embodiment 3

[0023] Dissolve 0.25 mole of sodium isethionate and 1 mole (according to sulfonate) of sodium polystyrene sulfonate in distilled water to form a solution with a molar concentration of 0.045 mol / L, and add 1 mole of 3,4-bis Oxyethylenethiophene, stir until the two are mixed evenly to form a transparent emulsion; add 5L of FeCl with a molar concentration of 10mmol / L 3 React with a mixed aqueous solution of potassium persulfate with a molar concentration of 0.3mol / L, and control the system temperature between 25-35°C for 36 hours; pour the reaction solution into acetone, filter, and wash the filter cake with 33% alcohol solution to the filtrate The phenol cannot be discolored, the filter cake is washed with distilled water, dried in vacuum, and ground to obtain a poly-3,4-dioxyethylenethiophene composite material doped with isethionic acid and polystyrene sulfonic acid.

[0024] The electrochemical performance test method is the same as in Example 1. The results show that the sp...

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Abstract

The invention discloses a poly 3,4-ethylenedioxy thiophene composite and a preparation method thereof, belonging to the technical field of conductive polymer materials. The poly 3,4-ethylenedioxy thiophene composite contains a 3,4-ethylenedioxy thiophene polymer and a dopant, wherein the dopant can be a single compound or a mixture of two or three of the following substances. According to the preparation method of the poly 3,4-ethylenedioxy thiophene composite, water is taken as a medium, the depant and 3,4-ethylenedioxy thiophene are uniformly dispersed, and then, the poly 3,4-ethylenedioxy thiophene composite is prepared by adopting a chemical oxidation process. The poly 3,4-ethylenedioxy thiophene composite and the preparation method thereof have the advantages that: the production cost is lower, the preparation process is simple and is easy in operation, and the prepared poly 3,4-ethylenedioxy thiophene composite has the characteristics of high specific capacity, excellent cyclical stability, high charge / discharge efficiency and the like, and is especially suitable for being used as an electrode material of super capacitors.

Description

technical field [0001] The invention relates to a composite conductive material used as an electrode material for a supercapacitor and a preparation method thereof, in particular to a poly-3,4-dioxyethylenethiophene composite material used as an electrode material for a supercapacitor and a preparation method thereof, belonging to the technology of conductive polymer materials . Background technique [0002] A supercapacitor is a new type of energy storage element between an electrostatic capacitor and a chemical power source. It not only has the same high discharge power as a capacitor, but also has the same charge storage capacity as a battery, and its energy density is higher than that of traditional capacitors. And the cycle life is higher and longer than the secondary battery, which can be used for high current instantaneous supply, medium current short-term backup power supply, low current long-term backup power supply and low-frequency microwave absorption, etc. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L65/00C08K5/42C08K5/17C08G61/12
Inventor 李巍周雪琴郭亚芳张耀强张彦旭尤旭东
Owner 天津都创科技有限公司
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