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Preparation method for preparing nano network structure electrode materials of manganese dioxide/conductive polymers applied to super capacitor

A conductive polymer, supercapacitor technology, applied in hybrid capacitor electrodes, hybrid/electric double-layer capacitor manufacturing, nanotechnology for materials and surface science, etc., can solve poor conductivity, affect the electrochemical performance and structure of supercapacitors Stability and other issues, to achieve the effect of improving electrical conductivity, conducive to popularization and application, and large output

Active Publication Date: 2016-11-02
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the conductivity of manganese dioxide is poor, and it needs to be mixed with conductive substances (such as conductive graphite, etc.) and binders to make electrode materials. This mixing situation directly affects the electrochemical performance and structural stability of supercapacitors.

Method used

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  • Preparation method for preparing nano network structure electrode materials of manganese dioxide/conductive polymers applied to super capacitor
  • Preparation method for preparing nano network structure electrode materials of manganese dioxide/conductive polymers applied to super capacitor
  • Preparation method for preparing nano network structure electrode materials of manganese dioxide/conductive polymers applied to super capacitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Weigh 2.08g KMnO 4 , dissolved in 150mL deionized water, and stirred at a certain speed until the solid was completely dissolved to form a transparent and clear solution. According to KMnO 4 Ratio of 1.5wt% of the raw material, weigh the polycarboxylate sodium salt dispersant, and add it to the above KMnO 4 in solution. Measure 0.5ml of aniline monomer solution and slowly add it to KMnO at a speed of 50ul / min 4 In the solution, the stirring rate was maintained at 1000r / min, and the stirring was continued for 1h. The resulting suspension was centrifuged at 8000r / min to achieve solid-liquid separation. Then the obtained solid was washed three times with deionized water and absolute ethanol in sequence, and a solid sample was obtained by separation. Put the solid sample into a 100ml beaker and freeze-dry it at -50°C and 10Pa for 10 hours to obtain the final black powder sample of the manganese dioxide / polyaniline three-dimensional nano-network composite material. The...

Embodiment 2

[0024] Weigh 3.58g KMnO 4 , dissolved in 150mL deionized water, and stirred at a certain speed until the solid was completely dissolved to form a transparent and clear solution. According to KMnO 4 Ratio of 3.2wt% of raw material, weigh cetyltrimethylammonium bromide dispersant, under stirring state, add to above KMnO 4 in solution. Measure 2.0ml of thiophene monomer solution, slowly add to KMnO at a rate of 75ul / min 4 In the solution, the stirring rate was maintained at 500r / min, and the stirring was continued for 4h. The resulting suspension was centrifuged at 5000 r / min to achieve solid-liquid separation. Then the obtained solid was washed three times with deionized water and absolute ethanol in sequence, and a solid sample was obtained by separation. Put the solid sample into a 100ml beaker and freeze-dry at -30°C and 10Pa for 8 hours to obtain the final black powder sample of the manganese dioxide / polythiophene three-dimensional nano-network composite material. The ...

Embodiment 3

[0026]Weigh 5.25g KMnO 4 , dissolved in 150mL deionized water, and stirred at a certain speed until the solid was completely dissolved to form a transparent and clear solution. According to KMnO 4 Ratio of 5.0wt% of raw material, weigh cetyltrimethylammonium bromide dispersant, under stirring state, add to above KMnO 4 in solution. Measure 3.5ml of pyrrole monomer solution, slowly add to KMnO at a rate of 100ul / min 4 In the solution, the stirring rate was maintained at 800r / min, and the stirring was continued for 3h. The resulting suspension was centrifuged at 2000r / min to achieve solid-liquid separation. Then the obtained solid was washed three times with deionized water and absolute ethanol in sequence, and a solid sample was obtained by separation. Put the solid sample into a 100ml beaker and freeze-dry at -80°C and 10Pa for 12 hours to obtain the final black powder sample of the manganese dioxide / polypyrrole three-dimensional nano-network composite. The measured powd...

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Abstract

The invention provides a preparation method for preparing the nano network structure electrode materials of manganese dioxide / conductive polymers applied to a super capacitor. the preparation method comprises the steps of 1, adding 1-10 g KMnO4 in 150 mL of deionized water, and stirring till the solid KMnO4 is completely dissolved in the deionized water; 2, with the ratio of the KMnO4 raw material to be 1-10 wt%, weighing a dispersant and adding the dispersant in the KMnO4 solution; 3, weighing 0.2-5 ml of conductive polymer monomers and adding the conductive polymer monomers into the KMnO4 solution with the dispersant already added therein to obtain a suspension liquid; 4, centrifugally separating the suspension liquid, and cleaning the obtained solid to obtain a solid sample; 5, freezing and drying the solid sample to obtain the manganese dioxide / conductive polymer nano-structure electrode material. Based on the preparation method, the prepared manganese dioxide / conductive polymer nano-structure electrode material is good in dispersity, large in specific surface area and good in conductivity. Meanwhile, the prepared electrode material of the super capacitor, prepared by the above method, is high in specific capacitance, high in power density, good in rate performance and the like.

Description

technical field [0001] The invention belongs to the technical field of preparation of new energy materials, and in particular relates to a preparation method of a manganese dioxide / conductive polymer nano network structure electrode material used as a supercapacitor. Background technique [0002] As a new type of energy storage device, supercapacitor has the characteristics of long cycle life, fast charge and discharge speed, high power, wide temperature range and environmental friendliness, so it has attracted extensive attention of scientists at home and abroad. The types of supercapacitors can be divided into electric double layer capacitors and Faraday pseudocapacitors according to their working principles. Electric double layer capacitors are based on the electric double layer theory and use the interfacial electric double layer capacitance formed between electrodes and electrolytes to store energy. The Faraday quasi-capacitor is based on the Faraday process, that is, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/46H01G11/48H01G11/86B82Y30/00B82Y40/00
CPCY02E60/13H01G11/46B82Y30/00B82Y40/00H01G11/48H01G11/86
Inventor 汪长安赵禹程
Owner TSINGHUA UNIV
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