A kind of preparation method of polypyrrole/silver nanocomposite material

A composite material and silver nanotechnology, which is applied in the manufacture of hybrid/electric double-layer capacitors, hybrid capacitor electrodes, etc., can solve the problems of uneven dispersion of conductive metal silver, and achieve improved conductivity, good tailoring, and specific capacitance. Effect

Active Publication Date: 2017-09-29
SHANGHAI INST OF TECH
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  • Description
  • Claims
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Problems solved by technology

[0005] The object of the present invention is to provide a kind of preparation method of polypyrrole / silver nanocomposite material in order to solve technical problem such as above-mentioned conductive metal silver is dispersed unevenly in polypyrrole, the nanometer in the polypyrrole / silver nanocomposite material obtained by this preparation method Silver particles are evenly dispersed in the polypyrrole matrix, and significantly improve the conductivity of the composite material, making active materials more effectively used, with better conductivity and higher specific capacitance, and can be used as supercapacitor electrode materials

Method used

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  • A kind of preparation method of polypyrrole/silver nanocomposite material
  • A kind of preparation method of polypyrrole/silver nanocomposite material
  • A kind of preparation method of polypyrrole/silver nanocomposite material

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Embodiment 1

[0021] A preparation method of polypyrrole / silver nano composite material, specifically comprising the following steps:

[0022] 0.2123g of silver nitrate and 1.005ml of pyrrole monomer were dissolved in 200ml of deionized water to form a uniform mixed system, and 7.5ml of trisodium citrate aqueous solution with a concentration of 0.5mol / L was added therein at a rate of 3mL / min under continuous stirring. Continue to stir for 20 minutes after the dropwise addition, then add 50ml of ferric chloride aqueous solution with a concentration of 0.3mol / L at a rate of 10mL / min, and control the temperature at 0°C for 6 hours of reaction. After the reaction, the resulting reaction solution is suction filtered. The obtained filter cake was washed three times with ethanol and deionized water successively, and then dried at a controlled temperature of 60° C. to obtain a spherical or quasi-spherical polypyrrole / silver nanocomposite;

[0023] The amount of above-mentioned silver nitrate used, ...

Embodiment 1

[0030] Disperse 1.005ml of pyrrole monomer in 200ml of deionized water, add 50mL of ferric chloride aqueous solution with a concentration of 0.3mol / L at a rate of 10mL / min under continuous mechanical stirring, and control the temperature at 0°C for 8 hours. Suction filtration after the reaction was completed, the obtained filter cake was washed with ethanol and deionized water three times respectively, and then dried at a controlled temperature of 60° C. to obtain polypyrrole particles.

[0031] The amount of ferric chloride aqueous solution used is calculated by molar ratio, that is, pyrrole monomer: ferric chloride is 1:1.

[0032] The polypyrrole particles obtained above were scanned by a Quanta 200FEG environmental scanning electron microscope from FEI Company of the Netherlands, and the obtained SEM image is as follows: Figure 4 As shown, the polypyrrole particles are stacked as chains, and the polypyrrole particles synthesized by the in-situ polymerization method have n...

Embodiment 2

[0038] A preparation method of polypyrrole / silver nano composite material, specifically comprising the following steps:

[0039] 0.2123g of silver nitrate and 0.650ml of pyrrole monomer were dissolved in 200ml of deionized water to form a uniform mixed system, and 12.5ml of trisodium citrate aqueous solution with a concentration of 0.3mol / L was added therein at a rate of 5mL / min under continuous stirring. Continue stirring for 20 minutes after the dropwise addition, then add 50ml of ferric chloride aqueous solution with a concentration of 0.9mol / L at a rate of 5mL / min, and control the temperature at 5°C for 4 hours of reaction. After the reaction, the resulting reaction solution is suction filtered. The obtained filter cake was washed three times with ethanol and deionized water successively, and then dried at a controlled temperature of 60° C. to obtain a spherical or quasi-spherical polypyrrole / silver nanocomposite;

[0040] The amount of the above-mentioned silver nitrate u...

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Abstract

The invention relates to a preparation method of a polypyrrole / silver nanocomposite material, comprising mixing a pyrrole monomer and a silver nitrate solution to form a system, adding a trisodium citrate aqueous solution drop by drop in a stirring state, and continuing to stir for 10-30min after the dropwise addition , then add the ferric chloride aqueous solution dropwise and react for 4-12h. After the reaction, the reaction solution is suction filtered, and the obtained filter cake is washed with ethanol and deionized water for 2-3 times, and then dried to obtain the shape It is spherical or quasi-spherical polypyrrole / silver nanocomposite particles, with a particle diameter of 100-250nm, a pore diameter of 3-15nm, and a pore volume of 0.283-0.356cm3 / g. The preparation method does not need expensive equipment and instruments, the preparation method is simple, the requirement for the reaction environment is low, and the production cost is low. The polypyrrole / silver nano-composite material prepared by it is used as a supercapacitor electrode material, and has excellent specific capacitance performance and thermal stability performance.

Description

technical field [0001] The invention relates to a silver / polypyrrole nanocomposite material, in particular to a preparation method of the polypyrrole / silver nanocomposite material. Background technique [0002] Supercapacitor is a new type of high-efficiency and practical green energy storage device between batteries and traditional capacitors. It has the advantages of high power density of conventional capacitors and high power density of rechargeable batteries. It has wide application prospects in new energy power generation, electric vehicles, information technology, aerospace, national defense technology and other fields. [0003] Polypyrrole (hereinafter referred to as PPy) has the characteristics of high electrical conductivity, high environmental stability, simple synthesis process and environmental friendliness. In particular, fields such as biosensors also show broad application prospects. However, the marketization of supercapacitors prepared using PPy still face...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/86H01G11/30H01G11/48H01G11/24
CPCY02E60/13
Inventor 万传云原黎阳沈海燕
Owner SHANGHAI INST OF TECH
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