Flexible stretchable active electrode and preparation method and application thereof

An active electrode and flexible technology, applied in the field of flexible and stretchable active electrodes and their preparation, can solve the problems of low energy density of flexible and stretchable capacitors, and achieve the effect of excellent volumetric energy density

Active Publication Date: 2018-08-10
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the intrinsically stretchable electrodes reported so far are almost all used in aqueous supercapacitors, and their low potential window leads to low energy density of flexible stretchable capacitors.

Method used

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  • Flexible stretchable active electrode and preparation method and application thereof
  • Flexible stretchable active electrode and preparation method and application thereof
  • Flexible stretchable active electrode and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] (1) A method for preparing a flexible and stretchable active electrode, comprising the following steps (see figure 1 ):

[0055] (1) Preparation of carbon nanotube organic dispersion

[0056] The carboxylated carbon nanotubes (MWCNTs) powder was added into N,N-dimethylacetamide, and after ultrasonic treatment and mechanical stirring, a uniform organic dispersion of carbon nanotubes was formed.

[0057] (2) Preparation of flexible stretchable polyacrylate rubber and carbon nanotube composite film

[0058] ① Add polyacrylate rubber (ACM) to the organic dispersion of carbon nanotubes in step (1), control the weight ratio of carbon nanotubes and polyacrylate rubber to 1:1.9, and the total solid content in the dispersion is 3wt%. The polyacrylate rubber was completely dissolved under mechanical stirring.

[0059] ②Add 4wt% of diethylenetriamine and stir evenly at room temperature to form an organic dispersion of polyacrylate rubber and carbon nanotubes containing a crossl...

Embodiment 2

[0083] (1) A preparation of a stretchable flexible active material electrode, comprising the following steps:

[0084] (1) (same as embodiment 1).

[0085] (2) Preparation of flexible stretchable polyacrylate rubber and carbon nanotube composite film

[0086] ① (same as embodiment 1).

[0087] ② (same as embodiment 1).

[0088] ③ (same as embodiment 1).

[0089] ④ (same as embodiment 1).

[0090] (3) Preparation of flexible and stretchable active electrodes

[0091] ① (same as embodiment 1).

[0092] ② Soak the slices cut in step ① in an acetonitrile solvent dissolved with 0.1 mol / L aniline monomer, 0.1 mol / L tetraethylammonium tetrafluoroborate and 0.5 mol / L trifluoroacetic acid for 24 hours.

[0093] ③Put the soaked slices in step ② at +1 volt ( vs. Ag / Ag + ) to perform electrochemical polymerization at a constant potential, and the polymerization charge is 3 coulombs / square centimeter.

[0094] ④Wash the sheet after electrochemical polymerization in step ③ with a...

Embodiment 3

[0101] (1) A preparation of a stretchable flexible active material electrode, comprising the following steps:

[0102] (1) Preparation of carbon nanotube organic dispersion

[0103] The carboxylated carbon nanotubes (MWCNTs) powder was added into acetone, and after ultrasonic treatment and mechanical stirring, a uniform organic dispersion of carbon nanotubes was formed.

[0104] (2) Preparation of flexible stretchable polyacrylate rubber and carbon nanotube composite film

[0105] ①Add polyacrylate rubber (ACM) to the organic dispersion of carbon nanotubes in step (1), control the weight ratio of carbon nanotubes and polyacrylate rubber to 1:5.7, and the total solid content in the dispersion is 10wt%. The polyacrylate rubber was completely dissolved under mechanical stirring.

[0106] ②Add 2wt% triethylenetetramine and stir evenly at room temperature to form an organic dispersion of polyacrylate rubber and carbon nanotubes containing a crosslinking agent.

[0107] ③ Pour th...

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Abstract

The invention provides a flexible stretchable active electrode, which is formed by a composite film loaded with a conductive polymer having excellent electrochemical activity, wherein the composite film is formed by matrix stretchable polyacrylate rubber and high-conductivity carbon nanotubes, mass percent of the components above being 25-60wt% of polyacrylate rubber, 10-45 wt% of carbon nanotubesand 10-30wt% of conductive polymer. The preparation method of the flexible stretchable active electrode comprises the following steps: 1) preparing carbon nanotube organic dispersion liquid; 2) preparing the flexible stretchable polyacrylate rubber and carbon nanotube composite film; and 3) preparing the flexible stretchable active electrode. The flexible stretchable active electrode has excellent resilience, good organic electrolyte absorption capability and high volume specific capacitance; and the preparation steps are clear and easy to operate, and can prepare the corresponding product effectively; and the flexible stretchable active electrode can be used for preparing a supercapacitor of flexible stretchable electronic equipment.

Description

technical field [0001] The invention belongs to the technical field of new energy materials, and in particular relates to a flexible and stretchable active electrode and a preparation method and application thereof. Background technique [0002] With the emergence of stretchable and flexible electronic devices such as smart wearables and deformable displays, the corresponding energy storage materials or devices have attracted more and more attention. At present, the development of new electrochemical energy storage components with high stretchability and excellent electrochemical performance has become an urgent problem to be solved for stretchable and flexible electronic devices. It has attracted much attention due to its long lifespan and other advantages. [0003] In the research and development of stretchable high-performance supercapacitors, the design and fabrication of stretchable electrodes is the key. At present, the preparation methods of stretchable electrode ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/30H01G11/04H01G11/86
CPCH01G11/30H01G11/46H01G11/86Y02E60/13
Inventor 王庚超王曦金洁
Owner EAST CHINA UNIV OF SCI & TECH
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