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Flexible composite thin film material and preparation method thereof

A composite film, flexible technology, applied in electrolytic organic material coating, metal material coating process, hybrid capacitor electrodes, etc., can solve the problems of electrochemical performance decline, electrode conductivity decline, ionic conductivity and electronic conductivity divergence, etc. , to achieve the effect of improving the electronic conductivity

Inactive Publication Date: 2020-08-28
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, it can also solve the problem of decreased electrochemical performance due to the increase in the amount of polypyrrole, the decrease in electrode conductivity, and the deviation between ionic conductivity and electronic conductivity.

Method used

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  • Flexible composite thin film material and preparation method thereof
  • Flexible composite thin film material and preparation method thereof
  • Flexible composite thin film material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A nanoporous gold film embedded with nano-gold particles, the preparation method of which comprises the steps of:

[0046] a. Preparation of nanoporous gold film:

[0047] (1) Nanoporous gold films were prepared by dealloying free corrosion method, that is, commercial Au films with a size of 20mm×20mm×100nm 35 Ag 65 Alloy film, immersed in concentrated nitric acid solution with a mass fraction of 69%, free to corrode for 8 hours;

[0048] (2) Transfer to deionized water and wash three times to rinse the residual chemicals in the pores;

[0049] (3) Fixing the nanoporous gold film on a PET (polyethylene terephthalate) substrate and annealing heat treatment at 80°C for half an hour to prepare a nanoporous gold film (NPG / PET substrate);

[0050] b. Preparation of polypyrrole / nanoporous gold composite film:

[0051] (1) The electroplating solution equipped with pyrrole, the pyrrole of 1.38mL and the HClO of 1.6mL 4 Dissolve in 200mL of ultrapure water to form a 0.1M py...

Embodiment 2

[0058] A nanoporous gold film embedded with nano-gold particles, the preparation method of which comprises the steps of:

[0059] a. Preparation of nanoporous gold film:

[0060] (1) Nanoporous gold films were prepared by electrochemical corrosion. In a classic three-electrode system, the platinum sheet was used as the counter electrode, and Ag / AgCl was used as the reference electrode. Commercial Au with a size of 20mm×20mm×700nm 35 Ag 65 The alloy film is used as the working electrode, the electrolyte is 1M dilute nitric acid, and the electrochemical corrosion is performed at a constant voltage of 1.1V for 25 minutes at room temperature;

[0061] (2) Transfer to deionized water and wash three times to rinse the residual chemicals in the pores;

[0062] (3) Fixing the nanoporous gold film on a PET (polyethylene terephthalate) substrate and annealing heat treatment at 70°C for half an hour to prepare a nanoporous gold film (NPG / PET substrate);

[0063] b. Preparation of poly...

Embodiment 3

[0071] A nanoporous gold film embedded with nano-gold particles, the preparation method of which comprises the steps of:

[0072] a. Preparation of nanoporous gold film:

[0073] (1) Nanoporous gold films were prepared by dealloying electrochemical corrosion, and Au 35 Ag 65 The alloy was immersed in a nitric acid solution with a mass fraction of 69%, and corroded freely for 4 hours;

[0074] (2) Transfer to deionized water and wash three times to rinse the residual chemicals in the pores;

[0075] (3) Fixing the nanoporous gold film on a PET (polyethylene terephthalate) substrate and annealing heat treatment at 90°C for half an hour to prepare a nanoporous gold film (NPG / PET substrate);

[0076] b. Preparation of polypyrrole / nanoporous gold composite film:

[0077] (1) The electroplating solution equipped with pyrrole, the pyrrole of 1.38mL and the HClO of 1.6mL 4 Dissolve in 200mL of ultrapure water to form a 0.1M pyrrole plating solution.

[0078] (2) Immerse the NPG / ...

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Abstract

The invention discloses a flexible composite thin film material and a preparation method thereof. The flexible composite thin film material is of a sandwich structure (graphene-polypyrrole-nano-porousgold). A thin film comprises a structural unit of the composite thin film material; and the structural unit of the composite thin film material comprises a nano-porous gold thin film layer, a polypyrrole layer, nano-gold particles embedded into the polypyrrole layer and a graphene layer. The preparation method comprises the steps that firstly, a nano-porous gold thin film is prepared; secondly, apolypyrrole / nano-porous gold composite thin film is prepared; thirdly, a nano-porous gold thin film with the embedded nano-gold particles is prepared; and fourthly, a graphene thin film is prepared.The prepared flexible composite thin film material of the sandwich structure (graphene-polypyrrole-nano-porous gold) has a large specific surface area and high electrical conductivity; and by using the method of compositing pyrrole and graphene with good electrical conduction properties and a large specific surface area, the electrical conductivity of polypyrrole is obviously increased.

Description

technical field [0001] The invention relates to the technical field of preparation of metal thin film materials, in particular to a flexible composite thin film material and a preparation method thereof. Background technique [0002] In the supercapacitor system, the electrode material is the key to determine the performance. Polypyrrole has good development prospects in energy storage devices due to its good electrochemical and physical properties. However, polypyrrole is easy to agglomerate during the synthesis process, resulting in a decrease in specific surface area, and its low ionic conductivity (102S / cm) leads to a large internal resistance during charge and discharge, and does not have excellent charge and discharge rate performance. At the same time, the common problem of low cycle rate of conductive polymers also restricts the application of polypyrrole in supercapacitors. In order to solve this problem, choose carbon nanotubes and graphene with good electrical c...

Claims

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Application Information

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IPC IPC(8): C23C28/00C25F3/02C25D9/02C23C14/20C23C14/34C23C16/26B82Y40/00H01G11/24H01G11/32H01G11/36
CPCC23C28/00C25F3/02C25D9/02C23C14/205C23C14/34C23C16/26B82Y40/00H01G11/24H01G11/32H01G11/36
Inventor 侯莹章海霞杨云强张佳丽郭俊杰
Owner TAIYUAN UNIV OF TECH
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