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A method for in-situ growth of polyaniline arrays on the surface of polymer films

A polymer film, in-situ growth technology, applied in nanotechnology for materials and surface science, conductive materials dispersed in non-conductive inorganic materials, nanotechnology, etc., can solve the cumbersome process, limit wide application, stable Maintain uncontrollability and other issues to achieve the effect of easy implementation, improved electrochemical performance, and reduced interface resistance

Active Publication Date: 2018-04-13
广东南海普锐斯科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of using the template method is that the process is cumbersome, and how to effectively transfer the polyaniline array to the surface of the polymer electrolyte membrane and maintain the stability of the array structure after removing the template is very uncontrollable; the main disadvantage of using electrochemical polymerization is that polyaniline Arrays must be prepared on the surface of conductive materials, and small fluctuations in the preparation voltage will affect the repeatability of the prepared materials, thus limiting its wide application

Method used

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  • A method for in-situ growth of polyaniline arrays on the surface of polymer films
  • A method for in-situ growth of polyaniline arrays on the surface of polymer films
  • A method for in-situ growth of polyaniline arrays on the surface of polymer films

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Embodiment 1

[0025] Embodiment 1 adopts the following steps to realize the present invention.

[0026] 1. Preparation of aminated Nafion composite matrix material: After concentrating 80ml of Nafion solution with a mass content of 5% to 40ml, add 0.4g of silica nanoparticles modified with aminopropyltriethoxysilane, stir magnetically for 30min and then Ultrasonic disperse for 10min, then place the above-mentioned dispersion in a polytetrafluoroethylene petri dish, at 60 o The solvent is completely evaporated in the C vacuum oven, and then the temperature is raised to 120 o C is kept for 1h, and the aminated Nafion composite matrix material is obtained.

[0027] 2. Preparation of Nafion composite matrix material modified by nano-gold particles: immerse the matrix material prepared in step (1) in the pre-prepared nano-gold sol with a concentration of 10 mg / ml, deposit the nano-gold particles for 20 minutes, and take out the matrix material , carefully washed three times with deionized wate...

Embodiment 2

[0032] Example 2 The implementation steps are the same as in Example 1, except that in step (1), 0.05 g of amino-modified titanium dioxide nanoparticles are mixed with Nafion solution (the mass of Nafion is 0.45 g), and the thickness of the prepared polyaniline array is About 8.6 microns.

Embodiment 3

[0033] Example 3 The implementation steps are the same as in Example 1, except that in step (2) it is deposited in 20 mg / ml nano-gold sol for 5 minutes, and the concentration of 4-ATP in step (3) is 2 mg / ml. The prepared The thickness of the polyaniline array is about 6.3 microns.

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Abstract

The invention discloses a method for in-situ growth of a polyaniline array on the surface of a polymer film. According to the method, the surface of a polymer / aminated inorganic nano-oxide composite film is matched with gold nanoparticles, then an aniline monomer is self-assembled in a directed mode, condensation polymerization is conducted through chemical reaction under mild conditions, and the polyaniline array grows in situ on the surface of the polymer film. The array material prepared through the method is anchored on the surface of the polymer film, and can be effectively compounded with ion conductive membranes in electrochemical sensors, fuel batteries and other electrochemical devices. The interface resistance is reduced, ordering membrane electrodes are easy to prepare, and performance of the electrochemical devices is improved.

Description

technical field [0001] The invention belongs to the field of new materials, and in particular relates to a method for growing polyaniline arrays in situ on the surface of a polymer film. Background technique [0002] Electrode materials are widely used in electrochemical reactions and devices based on electrochemical reactions, such as electrochemical sensors, fuel cells, and electrolyzed water. At present, the electrode materials used for electrochemical reaction devices are usually conductive materials supporting noble metal catalysts. For example, carbon-supported platinum is commonly used as an electrode material in electrochemical sensors and fuel cells. However, resources such as precious metals such as platinum are scarce and expensive. When the performance and lifetime of non-noble metal electrocatalyst materials fail to meet the requirements of electrochemical devices, noble metal electrocatalysts are still the first choice for electrocatalytic materials for elect...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J7/16C08J7/12C08J5/18C08L33/12C08L27/18C08L29/04C08L33/02C08L61/16C08K9/06C08K9/04C08K3/36C08K3/22C08G73/02H01B1/22B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00C08G73/0266C08J5/18C08J7/12C08J7/16C08J2327/18C08J2333/12C08J2379/02C08K3/22C08K3/36C08K9/04C08K9/06C08K2003/2241C08K2201/011C08L2203/16H01B1/22C08L27/18C08L33/12
Inventor 袁定胜张海宁
Owner 广东南海普锐斯科技有限公司
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