Manufacturing method of foldable paper-based micro supercapacitor

A supercapacitor and miniature technology, applied in the manufacture of hybrid/electric double layer capacitors, hybrid capacitor electrodes, etc., can solve the problems of single current and voltage output form, easy to break, and unclear electrodes, so as to ensure stability, low cost, The effect of not easy to break the circuit

Active Publication Date: 2018-08-24
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the problems of easy circuit breakage, unclear electrodes, and single output form of current and voltage in the existing micro-supercapacitor preparation process, the present invention provides a method for preparing a foldable paper-based micro-supercapacitor. The graphene or graphene composite electrode is imprinted on the paper, and the porosity and water absorption of the paper are used to ensure the stability of the graphene or graphene composite electrode on the paper, and the prepared micro supercapacitor has good The flexibility and foldability of the method can realize the collection and utilization of wind energy and the output of different voltages and currents; at the same time, the preparation process of this method is simple, the operability is strong, and it can be prepared on a large scale

Method used

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  • Manufacturing method of foldable paper-based micro supercapacitor
  • Manufacturing method of foldable paper-based micro supercapacitor
  • Manufacturing method of foldable paper-based micro supercapacitor

Examples

Experimental program
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Embodiment 1

[0038](1) Add the mixture of 9g graphite powder and 9g sodium nitrate into 240mL concentrated sulfuric acid (mass fraction 98%), stir for 30min, then slowly add 27g potassium permanganate, continue stirring for 30min, then raise the temperature to 40°C and keep it warm 2h, then raise the temperature to 50°C and keep it warm for 1h, then slowly add 400mL of deionized water and raise the temperature to 90°C, keep it at 90°C for 20min, then add 1000mL of water to cool and stand still, filter to leave the solute, first use mass 50% dilute hydrochloric acid for suction filtration and washing, then further suction filtration and washing with 10% dilute hydrochloric acid for mass fraction, and finally put into a dialysis bag and dialyze to neutrality to obtain a graphene oxide solution with a concentration of 7 mg / mL;

[0039] (2) Add 15mL graphene oxide solution and 0.5mL absolute ethanol into a polytetrafluoroethylene container, then place the bottom of the polytetrafluoroethylene c...

Embodiment 2

[0053] (1) Use a laser to etch the copper foil to obtain nine copper templates based on interdigital electrode patterns; wherein, the thickness of the copper template is 20 μm, and each electrode pattern based on interdigital structure is formed by two interdigital structures. The electrodes are arranged crosswise, the number of fingers of each finger electrode is 6, the width of each finger is 300μm, and the length of each finger is 4mm. In the electrode pattern based on the finger structure, two adjacent fingers The finger spacing width is 300 μm, and the total area of ​​each electrode pattern based on the interdigital structure is 0.21 cm 2 ;

[0054] (2) cut the reduced graphene oxide foam obtained in embodiment 1 step (3) into a sheet with a thickness of 1.5mm with a cutter; the copper template is placed on a hard cellulose cardboard, and then the reduced graphene oxide The foam sheet is placed on the copper template and completely covers the electrode pattern based on t...

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Abstract

The invention relates to a manufacturing method of a foldable paper-based micro supercapacitor and belongs to the technical field of a micro energy storage device. The method comprises steps that a graphene or graphene composite electrode is imprinted onto a paper substrate through utilizing the template imprinting technology, the solid electrolyte is coated to the electrode, and the micro supercapacitor is manufactured on the paper substrate. The sheet-like graphene or graphene composite is imprinted through the template on the paper substrate to make the outline of the electrode clear and connectivity good, porosity and the water absorption property of the paper are utilized to ensure stability of the graphene or graphene composite electrode on the paper, foldability and flexibility of the paper are utilized to make the manufactured micro supercapacitor have good flexibility and foldability, wind energy collection and utilization and output of different voltages and currents can be realized, moreover, the manufacturing process is simple, operability is high, cost is low, and large scale manufacturing is realized.

Description

technical field [0001] The invention specifically relates to a method for preparing a foldable paper-based micro-supercapacitor by using template imprinting technology, and belongs to the technical field of micro-energy storage devices. Background technique [0002] With the rapid development of electronic technology in recent years, electronic devices tend to be miniaturized gradually, and the energy supply of electronic devices has attracted more and more attention. Among them, supercapacitors, an energy storage device, have received widespread attention and development in recent years. Limited by the volume of electronic devices, supercapacitors tend to be miniaturized gradually, and flexible planar micro supercapacitors are particularly favored by people. At present, printing technology and suction filtration process are mainly used to prepare micro-supercapacitors. Printing technology mainly uses graphene oxide or other conductive solutions as raw materials to print i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/24H01G11/30H01G11/36H01G11/48H01G11/26H01G11/84H01G11/86
CPCH01G11/24H01G11/26H01G11/30H01G11/36H01G11/48H01G11/84H01G11/86Y02E60/13
Inventor 曲良体高畅赵扬高健
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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