Preparation method of ultracapacitor material with layered double hydroxide-poly(3, 4-ethylenedioxythiophene) core-shell structure

A technology of ethylenedioxythiophene and core-shell structure, applied in capacitors, electrolytic capacitors, circuits, etc., can solve the problems of easy agglomeration of active substances, high price, poor conductivity of active components, etc., to inhibit aggregation and ensure effective transfer. , Improve the effect of poor magnification performance

Inactive Publication Date: 2012-07-25
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among common pseudocapacitive materials, RuO 2 ·xH 2 O has very superior performance. However, due to its high price, it is difficult to commercialize this type of capacitor, and it is currently only used in aerospace and military equipment.
Relatively inexpensive other transition metal oxides/hydroxides (such as MnO 2 、NiO/Ni(OH) 2 、Co 3 o 4 /Co(OH) 2 etc.) have received more and more attention in recent years, but this type of material has common disadvantages: 1) The active m

Method used

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  • Preparation method of ultracapacitor material with layered double hydroxide-poly(3, 4-ethylenedioxythiophene) core-shell structure
  • Preparation method of ultracapacitor material with layered double hydroxide-poly(3, 4-ethylenedioxythiophene) core-shell structure
  • Preparation method of ultracapacitor material with layered double hydroxide-poly(3, 4-ethylenedioxythiophene) core-shell structure

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Step A: Weigh 0.218g Co(NO 3 ) 2 ·6H 2 O and 0.094g Al(NO 3 ) 3 9H 2 O(Co / Al=3) dissolved in 50ml to remove CO 2 Prepare mixed salt solution with deionized water;

[0025] Step B: Weigh 0.15g urea and 0.042g ammonium fluoride and dissolve them in 50ml to remove CO 2 Deionized water is made into solution A with a concentration of 0.05mol / L and solution B with a concentration of 0.02mol / L;

[0026] Step C: Take 20ml of the transparent and clear solution obtained in step a, 10ml of solution A and 10ml of solution B obtained in step b, mix the three in an autoclave, and put it into ITO glass, then seal the autoclave and put it in 110 In the oven at ℃, take it out after 10 hours of reaction, wash off the surface residue with deionized water, and obtain a hydrotalcite array film on the ITO glass;

[0027]Step D: take the ITO glass with a hydrotalcite array thin film on the surface obtained in step c, and coat the surface with a layer of poly(3,4-ethylenedioxythiophene...

Embodiment 2

[0036] Step A: Weigh 0.145g Co(NO 3 ) 2 ·6H 2 O and 0.094g Al(NO 3 ) 3 9H 2 O(Co / Al=2) dissolved in 50ml to remove CO 2 Prepare mixed salt solution with deionized water;

[0037] Step B: Weigh 0.12g urea and 0.032g ammonium fluoride and dissolve them in 50ml to remove CO 2 A solution with a concentration of 0.04mol / L and a B solution with a concentration of 0.015mol / L were prepared in deionized water;

[0038] Step C: Take 12ml of the transparent and clear solution obtained in step a, 8ml of solution A and 8ml of solution B obtained in step b, mix the three in the autoclave, and put cobalt chips into it, then seal the autoclave and put it in 120 ℃ oven, take it out after 15 hours of reaction, wash off the surface residue with deionized water, and obtain a hydrotalcite array film on the ITO glass;

[0039] Step D: take the ITO glass with a hydrotalcite array thin film on the surface obtained in step c, and coat the surface with a layer of poly(3,4-ethylenedioxythiophene...

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Abstract

The invention discloses an ultracapacitor material with a layered double hydroxide-poly(3, 4-ethylenedioxythiophene) core-shell structure and a preparation method of the ultracapacitor material, belonging to the technical field of preparation of ultracapacitor materials. The ultracapacitor material is prepared from layered double hydroxide with electrochemical activity and poly(3,4-ethylenedioxythiophene) with good electrical conductivity. The preparation method comprises the following steps: firstly preparing a layered double hydroxide array film, and then coating a layer of poly(3,4-ethylenedioxythiophene) on a layered double hydroxide nanocrystalline array with an electrochemical deposition method, so as to form the core-shell structure. The ultracapacitor material has the advantages that layered double hydroxide nanocrystalline with an array structure can effectively suppress aggregation of active components, provides a channel for electron transfer, and ensures effective transfer of electrons during quick charging and discharging; and the introduction of a poly(3,4-ethylenedioxythiophene) shell improves the defect that the magnification performance of conventional pseudocapacitor materials is poor.

Description

technical field [0001] The invention belongs to the technical field of supercapacitor material preparation, in particular to a method for preparing a hydrotalcite-poly(3,4-ethylenedioxythiophene) core-shell structure supercapacitor material. Background technique [0002] Supercapacitors, also known as electrochemical capacitors, have the advantages of high capacity, safety and reliability, and fast charging and discharging. They are new energy storage components that have emerged with the development of material science in the past ten years. In January 2007, the world-renowned scientific and technological journal American "Discovery" listed supercapacitors as one of the world's seven major technological discoveries in 2006, and believed that supercapacitors are a revolutionary development in the field of energy storage. After entering the 21st century, electricity is in short supply, energy sources such as coal and oil are becoming increasingly exhausted, and environmental ...

Claims

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Application Information

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IPC IPC(8): H01G9/042
CPCY02E60/13
Inventor 韩景宾卫敏豆义波段雪
Owner BEIJING UNIV OF CHEM TECH
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