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Efficient preparation method for planar miniature supercapacitor electrode with interdigital structure

A technology of supercapacitor and interdigital structure, which is applied in the manufacture of hybrid capacitor electrodes and hybrid/electric double-layer capacitors, etc., can solve the problems such as the inability to widely use active materials and the applicability of inkjet printing, and achieve low cost, high preparation process Simple, universal effect

Inactive Publication Date: 2018-08-21
ZHEJIANG UNIV OF TECH
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  • Abstract
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Problems solved by technology

Therefore, the applicability of inkjet printing is limited, and it cannot be widely used in various active materials with different properties.

Method used

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  • Efficient preparation method for planar miniature supercapacitor electrode with interdigital structure
  • Efficient preparation method for planar miniature supercapacitor electrode with interdigital structure
  • Efficient preparation method for planar miniature supercapacitor electrode with interdigital structure

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Embodiment Construction

[0036] The present invention will be described in further detail below in conjunction with specific embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0037] 1. Sample preparation

[0038] (1) Example 1 is a planar supercapacitor based on EG film prepared by "direct scraping method", and the preparation steps are as follows:

[0039] Graphene (EG) was prepared by electrochemical exfoliation: commercialized graphite paper, platinum sheet, and silver / silver chloride electrode were used as the working electrode, counter electrode, and reference electrode, respectively, and 0.1M sulfuric acid was used as the electrolyte solution. Graphene was prepared by exfoliating graphite paper under voltage. The distance between the working electrode and the counter electrode was 1 cm. The EG floating on the liquid surface was collected by filtration, washed with deionized water several times to remove residual sulfuric acid, and th...

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Abstract

The invention relates to an efficient preparation method for a planar miniature supercapacitor electrode with an interdigital structure, which comprises the steps of (1) obtaining a film based on a two-dimensional nanomaterial on a substrate; (2) directly scraping a part required to be removed on the film according to a pre-designed pattern by using a scraping tool with a pointed end to obtain a planar miniature supercapacitor electrode with an interdigital structure, wherein the size of the pointed end of the scraping tool is not greater than the size of a narrowest part of the part requiredto be removed. The preparation method has the advantages of simplicity, high efficiency, high universality, low cost and environmental friendliness.

Description

technical field [0001] This paper relates to a preparation method of a planar micro-supercapacitor electrode with an interdigitated structure. Background technique [0002] In recent years, with the vigorous development of miniature portable electronic devices, the demand for energy storage devices that can provide high energy and power density has become more and more urgent. Among various energy storage devices, as a new type of energy storage device, supercapacitors can fill the gap in the power density of batteries and the energy density of flat-plate capacitors, so they are favored by scientific and technological workers. Two main factors affecting the performance of planar supercapacitors are the selection of electrode materials and the fabrication techniques of the devices. [0003] Since Geim et al. successfully prepared graphene nanosheets in 2004, two-dimensional nanomaterials have aroused widespread interest among researchers. Compared with nanomaterials of othe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/86H01G11/26
CPCY02E60/13H01G11/86H01G11/26
Inventor 曹澥宏李鹏施文慧刘文贤
Owner ZHEJIANG UNIV OF TECH
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