A kind of porous polyaniline nanocomposite electrode material and its preparation method and application

A nanocomposite and porous structure technology, applied in the manufacture of hybrid capacitor electrodes and hybrid/electric double layer capacitors, etc., can solve the problems of easy collapse of nanoporous structures, inconspicuous electrochemical stability, complex template removal operations, etc., to achieve Fast electrochemical response, suitable for large-scale production, and low-cost effects

Active Publication Date: 2017-08-25
国科广化(南雄)新材料研究院有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the general template method has the disadvantages of high cost, complex template removal operation, easy collapse of the nanoporous structure after template removal, and insignificant improvement in electrochemical stability (Langmuir 2011, 27, 6458–6463; ACS Appl. Mater.Interfaces2013,5,3382-3391)
thus limiting its wider practical application

Method used

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  • A kind of porous polyaniline nanocomposite electrode material and its preparation method and application
  • A kind of porous polyaniline nanocomposite electrode material and its preparation method and application
  • A kind of porous polyaniline nanocomposite electrode material and its preparation method and application

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Embodiment 1

[0040] The preparation of embodiment 1 sulfonated cross-linked polystyrene microspheres

[0041] Dissolve 0.26g of ammonium persulfate in 600mL of deionized water, add 60g of styrene, 4.8g of acrylic acid, and 1.2g of divinylbenzene together under stirring, and react under nitrogen protection at 75°C for 24 hours. Finally, rinse and centrifuge with deionized water and absolute ethanol, filter, and dry to obtain cross-linked polystyrene microspheres, which are denoted as CPS. Take 3 parts by mass of cross-linked polystyrene microspheres, add them into 60 parts by mass of concentrated sulfuric acid, ultrasonically disperse for 10 minutes, and then react with stirring in a constant temperature bath at 40° C. for 2 hours. After the reaction, it was poured into deionized water for dilution, washed several times with absolute ethanol / water with a volume ratio of 1:1, centrifuged, filtered and dried to obtain sulfonated cross-linked polystyrene microspheres, which were designated as ...

Embodiment 2

[0042] The preparation of embodiment 2 sulfonated cross-linked polystyrene microspheres

[0043] Dissolve 0.26g of ammonium persulfate in 600mL of deionized water, add 60g of styrene, 4.8g of acrylic acid, and 1.2g of divinylbenzene together under stirring, and react under nitrogen protection at 75°C for 24 hours. Finally, rinse and centrifuge with deionized water and absolute ethanol, filter, and dry to obtain cross-linked polystyrene microspheres, which are denoted as CPS. Take 3 parts by mass of cross-linked polystyrene microspheres, add them into 50 parts by mass of concentrated sulfuric acid, ultrasonically disperse for 10 minutes, and then stir and react in a constant temperature bath at 40° C. for 3 hours. After the reaction, it was poured into deionized water for dilution, washed several times with absolute ethanol / water with a volume ratio of 1:1, centrifuged, filtered and dried to obtain sulfonated cross-linked polystyrene microspheres, which were designated as CSP3....

Embodiment 3

[0044] The preparation of embodiment 3 sulfonated cross-linked polystyrene microspheres

[0045] Dissolve 0.26 g of ammonium persulfate in 600 mL of deionized water, add 60 g of styrene, 4.8 g of acrylic acid, and 1.2 g of divinylbenzene together under stirring, under nitrogen protection, and react with constant stirring at 75°C for 24 hours. Finally, rinse and centrifuge with deionized water and absolute ethanol, filter, and dry to obtain cross-linked polystyrene microspheres, which are denoted as CPS. Take 3 parts by mass of cross-linked polystyrene microspheres, add them into 60 parts by mass of concentrated sulfuric acid, ultrasonically disperse for 10 minutes, and then stir and react in a constant temperature bath at 40° C. for 6 hours. After the reaction, it was poured into deionized water for dilution, washed several times with absolute ethanol / water with a volume ratio of 1:1, centrifuged, filtered and dried to obtain sulfonated cross-linked polystyrene microspheres, w...

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Abstract

The invention discloses a polyaniline nanocomposite electrode material with a porous structure, a preparation method and an application thereof. The method is to use pre-prepared sulfonated cross-linked polystyrene nano-microspheres to swell in protonic acid aqueous solution, use it as a template, aniline is adsorbed on the surface of the swollen microspheres, water-based initiator is added, and low-temperature oxidative coupling polymerization is carried out in one step. get. In the present invention, by changing and optimizing the sulfonation time of CPS microspheres, the swelling degree of CSP microspheres, and the composition ratio of CSP microspheres and aniline monomers, the specific surface area and specific capacitance of polyaniline composite electrode materials can be improved to varying degrees. , so as to better meet the requirements of different practical applications. The reagents used in the preparation process of the invention are commonly used medicines, are cheap and easy to obtain, have a simple preparation process and are suitable for large-scale production. The prepared polyaniline nanocomposite electrode material with porous structure can be applied in fields such as electrochemical sensors or flexible supercapacitors.

Description

technical field [0001] The invention belongs to the technical field of new energy materials, and in particular relates to a polyaniline nanocomposite electrode material with a porous structure and its preparation method and application. Background technique [0002] The sustainable development and utilization of energy has attracted more and more attention from all over the world. Among them, as a new type of energy storage device in the 21st century, supercapacitors have many significant advantages such as large capacity, high power density, fast charge and discharge capability, long cycle life, wide operating temperature range, no pollution, and high safety; in various electrical appliances The equipment system is widely used. The polyaniline conductive polymer can be used as a supercapacitor electrode material. Compared with noble metals and transition metal oxides, it has the advantages of simple preparation, low cost, high specific surface area, controllable conductivi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/30H01G11/86H01G11/48
CPCY02E60/13
Inventor 吕满庚赵强吴昆陈君华罗富彬沈璐王莹
Owner 国科广化(南雄)新材料研究院有限公司
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