Preparation method of flexible thin-film electrode

A flexible film and electrode technology, applied in the field of new energy materials, can solve the problems of conductive support and mechanical support that have not been reported, and achieve the effects of high mechanical flexibility, high loading capacity, and excellent electrical conductivity

Inactive Publication Date: 2014-08-06
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the use of heat-treated graphene oxide as a conductive and mechanical support for flexible electrode materials has not been reported so far.

Method used

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  • Preparation method of flexible thin-film electrode

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Experimental program
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Effect test

Embodiment 1

[0027] Heat-treat 100 mL of graphene oxide aqueous solution with a concentration of 0.05 mg / mL at 50°C for 30 days to obtain a heat-treated graphene oxide aqueous solution; at the same time, uniformly disperse the electrode active material in water to form an electrode active material dispersion with a concentration of 0.1 mg / mL liquid. The obtained heat-treated graphene oxide aqueous solution and the electrode active material dispersion are mixed according to the mass ratio of the heat-treated graphene oxide and the electrode active material dispersion to 9:1, and are stirred by ultrasonic and magnetic force to form a uniform mixed solution. After the filter membrane vacuum-filters the mixed solution, a flexible thin-film electrode hybridized with heat-treated graphene oxide and electrode active materials is obtained on the filter paper. Put the heat-treated graphene oxide hybridized with the electrode active material flexible film electrode together with the filter paper int...

Embodiment 2

[0030] Heat-treat 200mL of graphene oxide aqueous solution with a concentration of 0.01mg / mL at 70°C for 15 days to obtain a heat-treated graphene oxide aqueous solution; at the same time, uniformly disperse the electrode active material in water to form an electrode active material dispersion with a concentration of 0.01mg / mL liquid. The obtained heat-treated graphene oxide aqueous solution and the electrode active material dispersion are mixed according to the mass ratio of the heat-treated graphene oxide and the electrode active material dispersion to 5:5, and are stirred by ultrasonic and magnetic force to form a uniform mixed solution. After the filter membrane vacuum-filters the mixed solution, a flexible thin-film electrode hybridized with heat-treated graphene oxide and electrode active materials is obtained on the filter paper. Put the heat-treated graphene oxide hybridized with the electrode active material flexible film electrode together with the filter paper into ...

Embodiment 3

[0032] Heat-treat 50 mL of graphene oxide aqueous solution with a concentration of 0.1 mg / mL at 90°C for 1 day to obtain a heat-treated graphene oxide aqueous solution; at the same time, uniformly disperse the electrode active material in water to form an electrode active material dispersion with a concentration of 1 mg / mL . The obtained heat-treated graphene oxide aqueous solution and the electrode active material dispersion are mixed according to the mass ratio of the heat-treated graphene oxide and the electrode active material dispersion at 1:9, and are stirred by ultrasonic and magnetic force to form a uniform mixed solution. After the filter membrane vacuum-filters the mixed solution, a flexible thin-film electrode hybridized with heat-treated graphene oxide and electrode active materials is obtained on the filter paper. Put the heat-treated graphene oxide hybridized with the electrode active material flexible film electrode together with the filter paper into an oven an...

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Abstract

The invention discloses a preparation method of a flexible thin-film electrode. The method takes thermally-treated graphene oxide as conductive support and mechanical support and obtains the flexible thin-film electrode at one step through a vacuum filtration process. The method comprises the following steps: thermally treating graphene oxide aqueous solution to obtain thermally-treated graphene oxide aqueous solution; dispersing electrode active materials in water to form an electrode active material dispersion solution; mixing the thermally-treated graphene oxide aqueous solution with the electrode active material dispersion solution to obtain a mixed solution, filtering and drying, then obtaining the flexible thin-film electrode hybridized by the thermally-treated graphene oxide and the electrode active materials. The method is simple to operate and low in cost. The flexible thin-film electrode prepared by the method and hybridized by the thermally-treated graphene oxide and the electrode active materials has uniform layer structures, is excellent in conductivity and good in flexibility and can be widely used in the fields of batteries, super capacitance materials and green and environmentally friendly vehicles.

Description

technical field [0001] The invention relates to a flexible thin-film electrode, in particular to a flexible thin-film electrode hybridized with heat-treated graphene oxide and electrode active materials, which can be used in the field of new energy materials. Background technique [0002] With the increasing growth and development of flexible electronic devices, the development of flexible energy storage devices has become a research hotspot in the field of energy storage. Among them, electrode materials, as the core components of energy storage devices, have become the research focus of scientific researchers and have received extensive attention. At present, the preparation methods of flexible thin film electrodes mainly include vacuum filtration method, coating method, and in situ growth method. Coating method and in-situ growth method significantly reduce the energy density and power density of the overall electrode because the current collector occupies a large volume ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/04H01M4/66H01G11/68H01G11/86
CPCH01G11/68H01G11/86H01M4/0471H01M4/1393Y02E60/10
Inventor 高濂杨树华宋雪峰张鹏
Owner SHANGHAI JIAO TONG UNIV
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