High-voltage planar supercapacitor as well as preparation method thereof

A supercapacitor, planar technology, applied in the manufacture of hybrid/electric double layer capacitors, multiple hybrid/electric double layer capacitors, hybrid capacitor electrodes, etc., can solve the problems of complex series steps, poor flexibility, low voltage, etc. It has universality, simple preparation method, and the effect of reducing weight and volume

Inactive Publication Date: 2019-04-16
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems of low voltage, complicated series steps, and poor flexibility of supercapacitors, the present invention aims to provide a method for preparing high-voltage planar flexible supercapacitors on any insulating substrate, so as to meet the needs of wearable electronic devices for power sources. needs

Method used

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  • High-voltage planar supercapacitor as well as preparation method thereof
  • High-voltage planar supercapacitor as well as preparation method thereof
  • High-voltage planar supercapacitor as well as preparation method thereof

Examples

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Embodiment 1

[0040] The intercalated and exfoliated graphene and conductive carbon black are fully mixed to obtain a mixture of the two with a mass ratio of 7:3, and then the above mixture is dispersed in a bivalent ester dissolved in polyvinyl chloride vinyl acetate by ball milling, wherein the mixture The mass ratio of polyvinyl chloride vinyl acetate and dibasic acid ester is 1:1:9, and the resulting dispersion system is used as conductive ink for screen printing. Design the screen printing screen, the screen part is 4 strip-shaped devices and the connecting body between the devices, the length of a single electrode of the strip-shaped device is 1cm, the width is 0.6mm, the spacing is 1mm, the connecting body length is 6mm, and the width is 4mm. When screen printing, place the glass about 5mm below the screen, apply conductive ink to the blank space at one end of the screen, and then use a scraper to scrape the ink to the other end of the screen at a speed of about 3cm / s, during which t...

Embodiment 2

[0043] The graphene exfoliated in the liquid phase and the conductive carbon black are fully mixed with a mass ratio of 7:3 to obtain a mixture of the two, and then the mixture is dispersed in a bivalent ester dissolved in polyvinyl chloride vinyl acetate by a ball milling method, wherein the mixture The mass ratio of polyvinyl chloride vinyl acetate and dibasic acid ester is 1:1:9, and the resulting dispersion system is used as conductive ink for screen printing. Design the screen printing screen, the screen part is a supercapacitor obtained by connecting 10 strip-shaped devices in series, the length of a single electrode of the strip-shaped device is 1cm, the width is 0.6mm, the spacing is 1mm, the length of the connecting body is 6mm, and the width is 4mm . When screen printing, place PET about 5mm below the screen, apply conductive ink to the blank space at one end of the screen, and then use a scraper to scrape the ink to the other end of the screen at a speed of about 3c...

Embodiment 3

[0046] Fully mix the reduced graphene oxide and conductive carbon black with a mass ratio of 9:1 to obtain a mixture, and then disperse the mixture in a bivalent ester dissolved in polyvinyl chloride vinyl acetate by ball milling, wherein the mixture, polyvinyl chloride acetate The mass ratio of vinyl ester and dibasic acid ester is 1:1:9, and the resulting dispersion system is used as conductive ink for screen printing. Design the screen printing screen, the screen part is a supercapacitor obtained by connecting 130 strip-shaped devices in series, the length of a single electrode of the strip-shaped device is 1cm, the width is 0.6mm, the spacing is 1mm, the length of the connecting body is 6mm, and the width is 4mm ,Such as image 3 shown. When screen printing, place PET about 5mm below the screen, apply conductive ink to the blank space at one end of the screen, and then use a scraper to scrape the ink to the other end of the screen at a speed of about 3cm / s, during which t...

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Abstract

The invention discloses a high-voltage planar supercapacitor as well as a preparation method thereof. Specifically, a dispersion system containing electrode materials (graphene, carbon nano tubes, polymers, oxides, hydroxides, sulfides, nitrides and the like) and additives is taken as printing ink, a printing method is adopted, and a planar supercapacitor with high voltage is prepared on any insulated substrate by virtue of a one-step process. The obtained planar supercapacitor realizes integration preparation of electrodes, a current collector and a connector as well as series integration ofmultiple plane supercapacitors, has a high output voltage, can be combined with a printable electronic device to be taken as a power source of the printable electronic device and has a broad market prospect.

Description

technical field [0001] The invention belongs to the field of energy storage, and in particular relates to a high-voltage planar supercapacitor and a preparation method thereof. Background technique [0002] Supercapacitor is an energy storage device that has emerged in recent years. Compared with commonly used lithium-ion batteries, it has the advantages of high power density, fast charge and discharge speed, and long life. However, in actual use, it is generally limited by the working voltage (generally lower than 1.0V in the water system), and it is difficult to meet the requirements for the normal operation of electronic devices. Therefore, multiple supercapacitors are often connected in series by means of wires to increase the working voltage. However, the introduction of wires complicates the entire process and reduces the specific capacity and energy density of supercapacitors. In addition, multiple wire connections will greatly reduce the integrity of the entire dev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/84H01G11/86H01G11/10H01G11/26H01G11/28H01G11/72
CPCH01G11/10H01G11/26H01G11/28H01G11/72H01G11/84H01G11/86Y02E60/13
Inventor 吴忠帅包信和师晓宇周锋
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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