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A kind of preparation method of tubular manganese dioxide/polyaniline/graphene composite material

A manganese dioxide and composite material technology, which is applied in the manufacture of hybrid/electric double-layer capacitors, electrodes of hybrid capacitors, etc., can solve problems such as unreported, and achieve the effects of low cost, high power density, and simple and orderly preparation process.

Active Publication Date: 2018-01-30
CHINA UNIV OF GEOSCIENCES (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In the present invention, polyethyleneimine is used as a template to prepare manganese dioxide with a tubular structure, and then polyaniline and graphene are coated sequentially to prepare a tubular manganese dioxide / polyaniline / graphene composite material. Related technologies have not been reported yet.

Method used

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  • A kind of preparation method of tubular manganese dioxide/polyaniline/graphene composite material
  • A kind of preparation method of tubular manganese dioxide/polyaniline/graphene composite material
  • A kind of preparation method of tubular manganese dioxide/polyaniline/graphene composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1) Add 10g of polyethyleneimine and 15g of potassium permanganate into 100g of deionized water, stir evenly, add ammonia water dropwise to adjust the pH of the reaction system to 9, react for 6 hours under hydrothermal reaction conditions at 80°C, and use up the reaction product Washing with deionized water and suction filtration twice, then washing with absolute ethanol and suction filtration twice, and finally vacuum drying at 100° C. for 12 hours to prepare tubular manganese dioxide.

[0040] (2) Add 1g of tubular manganese dioxide and 0.1g of aniline into 50ml of hydrochloric acid (20wt%) solution, stir and control the reaction temperature at 5°C, the reaction time is 10h, filter the reaction product, wash with dilute hydrochloric acid, and then use Wash with deionized water until the filtrate is neutral, then wash with absolute ethanol, and dry at 100°C to obtain a tubular manganese dioxide / polyaniline composite material.

[0041] (3) Take 1g of the above-mentione...

Embodiment 2

[0044] (1) Add 10g of polyethyleneimine and 10g of potassium permanganate into 150g of deionized water, stir evenly, add ammonia water dropwise to adjust the pH of the reaction system to 7, and wash the reaction product with deionized water under the condition of hydrothermal reaction at 100°C , suction filtration twice, then washing with absolute ethanol, suction filtration twice, and finally vacuum drying at 150° C. for 12 hours to prepare tubular manganese dioxide.

[0045] (2) Add 1g of tubular manganese dioxide and 0.5g of aniline into 10ml of phosphoric acid (20wt%) solution, stir and control the reaction temperature at 8°C, the reaction time is 12h, filter the reaction product, wash with dilute hydrochloric acid, and then use Wash with deionized water until the filtrate is neutral, then wash with absolute ethanol, and dry at 60°C to obtain a tubular manganese dioxide / polyaniline composite material.

[0046] (3) Take 1g of the above-mentioned tubular manganese dioxide / po...

Embodiment 3

[0049] (1) Add 5g of polyethyleneimine and 8g of potassium permanganate into 120g of deionized water, stir evenly, add ammonia water dropwise to adjust the pH of the reaction system to 8, and wash the reaction product with deionized water under the condition of hydrothermal reaction at 120°C , suction filtration twice, then washing with absolute ethanol, suction filtration twice, and finally vacuum drying at 200° C. for 12 hours to prepare tubular manganese dioxide.

[0050] (2) Add 1g of tubular manganese dioxide and 0.4g of aniline into 15ml of phosphoric acid (20wt%) solution, stir and control the reaction temperature at 10°C, the reaction time is 6h, filter the reaction product, wash with dilute hydrochloric acid, and then use Wash with deionized water until the filtrate is neutral, then wash with absolute ethanol, and dry at 300°C to obtain a tubular manganese dioxide / polyaniline composite material.

[0051] (3) Take 1g of the above-mentioned tubular manganese dioxide / pol...

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Abstract

The invention discloses a method for preparing tubular manganese dioxide / poly-aniline / graphene composite electrode material, belonging to the technical field of preparation of composite material. The method solves the problem of how to play advantages of various materials, and weakens defects caused by various materials. The preparation has material technical problems of high power density and good cycle stability of composite electrode. The preparation method is relatively simple and orderly. The tubular manganese dioxide / poly-aniline / graphene composite electrode materials prepared can take advantage of all kinds of materials, and weaken the defects caused by various materials, being a kind of composite electrode material with high power density and good cycle stability. The preparation has the advantages of low cost, high power density, and long cycle life.

Description

technical field [0001] The invention belongs to the technical field of composite material preparation, and in particular relates to a method for preparing a tubular manganese dioxide / polyaniline / graphene composite material. Background technique [0002] Supercapacitor is a new type of energy storage device between electrolytic capacitors and batteries. It has the advantages of long cycle life and high current charge and discharge, but it also has disadvantages such as large internal resistance. At present, supercapacitor electrode materials are mainly divided into three categories, namely metal oxides, conductive polymers and carbon materials. [0003] Manganese dioxide electrode material has the characteristics of abundant reserves, low price, environmental friendliness and good electrochemical performance in neutral electrolyte, so it is an important electrode material. The tubular material can bring more active materials into contact with the electrolyte, thereby greatly...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/30H01G11/36H01G11/46H01G11/86
CPCY02E60/13
Inventor 张以河任卫卫张德扬吕凯凯孙黎
Owner CHINA UNIV OF GEOSCIENCES (BEIJING)