Method for fabricating flexible electrode

A flexible electrode and electrochemical technology, applied in the manufacture of hybrid capacitor electrodes and hybrid/electric double-layer capacitors, etc., can solve the problems of low capacity, large weight, and low usage of active materials, and achieve high specific capacity and quality. Light, lightweight effect

Inactive Publication Date: 2013-10-02
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The former uses less active materials, has low capacity and low stored energy, and is not suitable for electric vehicles; while the latter has a large capacity, but is bulky, and requi

Method used

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  • Method for fabricating flexible electrode
  • Method for fabricating flexible electrode

Examples

Experimental program
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Example Embodiment

[0049] Example 1:

[0050] (1) The size of the cut graphene paper is 30×60mm;

[0051] (2) After ultrasonic cleaning the graphene paper in acetone and deionized water for 1 hour, dry it with nitrogen for use;

[0052] (3) Prepare acetonitrile electrolyte, which contains 0.1mol / L lithium perchlorate and 0.2mol / L 3,4-ethylenedioxythiophene monomer;

[0053] (4) Immerse the graphene paper in the electrolyte as the working electrode, platinum wire as the counter electrode, and silver / silver chloride as the reference electrode. After soaking for 30 minutes, use the chronopotentiometric method for polymerization. The polymerization potential is 0 to 1 volt. The current is 3mA / cm 2 , Cycle 100 times, electrochemical deposition is completed;

[0054] (5) The electrochemically deposited graphene paper is rinsed with absolute ethanol for 2 to 5 times, and dried in a vacuum at 60 to 80°C for 10 to 12 hours to obtain the conductive polythiophene flexible electrode sample 1 of graphene paper.

Example Embodiment

[0055] Example 2:

[0056] (1) The size of the cut graphene paper is 30×60mm;

[0057] (2) After ultrasonic cleaning the graphene paper in acetone and deionized water for 1 hour, dry it with nitrogen for use;

[0058] (3) Prepare acetonitrile electrolyte, which contains 0.5mol / L lithium perchlorate and 0.3mol / L 3,4-ethylenedioxythiophene monomer;

[0059] (4) Immerse the graphene paper in the electrolyte as the working electrode, platinum wire as the counter electrode, and silver / silver chloride as the reference electrode. After soaking for 30 minutes, use the chronopotentiometric method for polymerization. The polymerization potential is 0 to 1 volt. The current is 3mA / cm 2 , Cycle 100 times, electrochemical deposition is completed;

[0060] (5) The electrochemically deposited graphene paper is rinsed with absolute ethanol for 2 to 5 times, and dried in a vacuum at 60 to 80°C for 10 to 12 hours to obtain a conductive polythiophene flexible electrode sample 2 of graphene paper.

Example Embodiment

[0061] Example 3:

[0062] (1) The size of the cut graphene paper is 30×60mm;

[0063] (2) After ultrasonic cleaning the graphene paper in acetone and deionized water for 1 hour, dry it with nitrogen for use;

[0064] (3) Prepare acetonitrile electrolyte, which contains 0.1mol / L lithium perchlorate and 0.2mol / L 3,4-ethylenedioxythiophene monomer;

[0065] (4) Immerse the graphene paper in the electrolyte as the working electrode, platinum wire as the counter electrode, and silver / silver chloride as the reference electrode. After soaking for 30 minutes, use the chronopotentiometric method for polymerization. The polymerization potential is 0 to 1 volt. Current is 8mA / cm 2 , Cycle 100 times, electrochemical deposition is completed;

[0066] (5) Rinse the electrochemically deposited graphene paper with absolute ethanol for 2 to 5 times and dry it in a vacuum at 60 to 80°C for 10 to 12 hours to obtain the conductive polythiophene flexible electrode sample 3 of graphene paper.

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Abstract

The embodiment of the invention discloses a method for fabricating a flexible electrode, which comprises the steps of dissolving perchlorate and a 3,4-ethylene dioxo thiophene monomer in an acetonitrile solution, obtaining a polymerized electrolyte, fabricating a substrate with graphene paper, immersing the substrate in the polymerized electrolyte to serve as a working electrode, conducting electrochemical polymerization treatment, forming a polyoxythiophene membrane electrode layer on the substrate, cleaning and drying the substrate, and obtaining the flexible electrode. According to the method, the characteristics of light weight, good strength, high hardness and the like of the flexible graphene paper are utilized; the flexible graphene paper serves as an electrode base of a super capacitor; a polythiophene electrode is electrochemically polymerized on the graphene paper to form the conductive polythiophene flexible electrode of the double electrode layer/pseudocapacitance complementary graphene paper; and the flexible electrode is good in flexibility, high in specific capacity and light in weight, and is very suitable for fabricating the super capacitors for various assembling electromobiles.

Description

technical field [0001] The invention relates to the technical field of electronic materials, in particular to a method for manufacturing flexible electrodes. Background technique [0002] The traffic in modern metropolises is mainly provided by burning oil and other resources, which inevitably brings more and more serious pollution to the environment. At the same time, oil is a non-renewable resource. According to incomplete estimates, the existing oil stock on the earth It can only be used by humans for another 30 to 40 years, so there is an urgent need for a renewable energy source to replace gasoline as the main driving energy source. [0003] The electric vehicle has entered people's sight, and it has no pollution, low energy consumption, and has broad application prospects. However, the driving energy used by electric vehicles at this stage is lead-acid batteries or lithium-ion batteries, which cannot meet the high power required by the high starting speed of electric ...

Claims

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Application Information

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IPC IPC(8): H01G11/86H01G11/32H01G11/48
CPCY02E60/13
Inventor 徐建华杨文耀张学政杨亚杰
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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