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Polyaniline/barium titanate composite material, preparation method and application

A composite material, barium titanate technology, applied in the field of polyaniline/barium titanate composite material and its preparation, can solve problems such as difficulty in meeting the practical application requirements of supercapacitors, achieve short experimental period, improve specific capacitance, and good cycle stability sexual effect

Inactive Publication Date: 2019-10-08
DALIAN JIAOTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conductive polyaniline has incomparable advantages in the application of positive electrode materials for supercapacitors. However, due to the limitation of the material's own low specific capacitance, it is difficult for a single polyaniline as a supercapacitor electrode material to meet the actual requirements of various performance indicators of supercapacitors. application requirements

Method used

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  • Polyaniline/barium titanate composite material, preparation method and application
  • Polyaniline/barium titanate composite material, preparation method and application
  • Polyaniline/barium titanate composite material, preparation method and application

Examples

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Effect test

Embodiment 1

[0022] Weigh 40mmol of barium titanate at a molar ratio of aniline monomer / barium titanate of 1:1, add 40mmol of aniline monomer (0.4M) to 100mL H 2 SO 4 (0.5M) in aqueous solution. Under the condition of 0°C, stir with a magnetic stirrer for 30 minutes, and slowly add 100 mL of 0.4M ammonium persulfate solution to the above solution dropwise. The solution turned dark green with the addition of ammonium persulfate solution. After the reaction mixture was continuously stirred for 3 hours, it was left standing at 0° C. for 24 h. After the reaction was completed, suction filtration was carried out with a Buchner funnel, and the precipitate after suction filtration was collected. with H 2 SO 4 , deionized water and acetone to wash the filter cake until the filtrate is neutral. The resulting precipitate was dried under vacuum at 60°C for 24 hours. After grinding, a dark green polyaniline / barium titanate composite material was obtained.

Embodiment 2

[0024] Weigh 20mmol of barium titanate at a molar ratio of aniline monomer / barium titanate of 2:1, add 40mmol of aniline (0.4M) to 100mL H 2 SO 4 (0.5M) in aqueous solution. Under the condition of 0°C, stir with a magnetic stirrer for 30 minutes, and slowly add 100 mL of 0.4M ammonium persulfate solution to the above solution dropwise. The solution turned dark green with the addition of ammonium persulfate solution. After the reaction mixture was continuously stirred for 3 hours, it was left standing at 0° C. for 24 h. After the reaction was completed, suction filtration was carried out with a Buchner funnel, and the precipitate after suction filtration was collected. with H 2 SO 4 , deionized water and acetone to wash the filter cake until the filtrate is neutral. The resulting precipitate was dried under vacuum at 60°C for 24 hours. After grinding, a dark green polyaniline / barium titanate composite material was obtained.

Embodiment 3

[0026] Weigh 13.3mmol of barium titanate at a molar ratio of aniline monomer / barium titanate of 3:1, add 40mmol of aniline (0.4M) to 100mL H 2 SO 4 (0.5M) in aqueous solution. Under the condition of 0°C, stir with a magnetic stirrer for 30 minutes, and slowly add 100 mL of 0.4M ammonium persulfate solution to the above solution dropwise. The solution turned dark green with the addition of ammonium persulfate solution. After the reaction mixture was continuously stirred for 3 hours, it was left standing at 0° C. for 24 h. After the reaction was completed, suction filtration was carried out with a Buchner funnel, and the precipitate after suction filtration was collected. with H 2 SO 4 , deionized water and acetone to wash the filter cake until the filtrate is neutral. The resulting precipitate was dried under vacuum at 60°C for 24 hours. After grinding, a dark green polyaniline / barium titanate composite material was obtained.

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Abstract

The invention discloses a preparation method of a polyaniline / barium titanate composite material. The invention adopts solution polymerization in-situ composite method, takes ammonium persulfate as oxidant and sulfuric acid as dopant to prepare polyaniline / barium titanate composite material with different composite proportion. The method has the advantages of simple preparation process, strong operability, short experimental period, and can improve the capacitive properties of pure polyaniline, and has a broad application prospect in the electrode materials of supercapacitors.

Description

technical field [0001] The invention belongs to the field of preparation of supercapacitor electrode materials, and in particular relates to a polyaniline / barium titanate composite material and a preparation method and application thereof. Background technique [0002] Supercapacitor is a new generation of high-efficiency, green and clean new energy storage device that can store high energy and relatively high output power. Supercapacitors have a series of outstanding advantages such as fast charge and discharge, long cycle life, high power density, safe and clean operation. At present, the energy density of supercapacitors is not high enough, and their battery life is poor, which cannot meet the requirements of practical applications, which greatly limits their market applications. It can be seen from the energy density formula that the energy density of a supercapacitor is positively correlated with the square of the specific capacitance of the electrode material and the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/02C08K3/24
CPCC08G73/0266C08K3/24
Inventor 王韶旭赵思雨晋亚周迟莉萍袁梦
Owner DALIAN JIAOTONG UNIVERSITY
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