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Graphene transparent electrode and its manufacturing method and supercapacitor using it

A supercapacitor, transparent electrode technology, used in the manufacture of hybrid/electric double layer capacitors, hybrid capacitor electrodes, etc., to achieve the effect of excellent transparency and excellent capacitance

Active Publication Date: 2019-03-26
KOREA INST OF MACHINERY & MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the areal specific capacitance (~5 μF / cm 2 ) and the non-transparent existing supercapacitor (the thickness of the electrode material is generally a few microns) area-specific capacitance (area-specific capacitance, ~ 4mF / cm 2 ) is very low compared to

Method used

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  • Graphene transparent electrode and its manufacturing method and supercapacitor using it
  • Graphene transparent electrode and its manufacturing method and supercapacitor using it
  • Graphene transparent electrode and its manufacturing method and supercapacitor using it

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Embodiment 1

[0090] A single layer (1 layer) of a first graphene layer was formed on one side of a copper thin film with a thickness of 25 μm by chemical vapor deposition (CVD) to manufacture a first laminated structure (Cu / Gr).

[0091] At this time, argon (Ar) / hydrogen (H 2 ) mixed gas (Ar / H 2 flow = 100sccm / 50sccm) and annealing (annealing) at a temperature of 1000°C for 45 minutes, and then supplying a mixed gas of methane: hydrogen: argon in a ratio of 4sccm: 50sccm: 100sccm under the same temperature conditions for about 35 minutes to carry out graphite ene synthesis reaction. After the reaction was completed, it was rapidly cooled at room temperature (about 25° C.).

[0092] The first laminated structure is placed in a plastic petri dish (petri dish), and then poured into 1mM p-aminophenol (poly-AP) aqueous solution, and then the self-polymerization reaction of p-aminophenol is carried out on the surface of the first graphene layer for two hours to form a polymer layer.

[0093]...

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Abstract

A transparent graphene electrode according to one embodiment of the present invention comprises: a transparent substrate; a first graphene layer formed on the transparent substrate; a polymer layer formed by autopolymerizing a monomer on one surface of the first graphene layer; and a second graphene layer formed on the polymer layer. In addition, a method for manufacturing a transparent graphene electrode, according to one embodiment of the present invention, comprises the steps of: a) preparing a first stacked structure including a first graphene layer and a second stacked structure including a second graphene layer; b) forming a polymer layer by autopolymerizing a monomer on one surface of the first graphene layer; c) manufacturing a third stacked structure by stacking the second stacked structure on the polymer layer such that the polymer layer comes in contact with the second graphene layer; and d) transferring the third stacked structure onto a transparent substrate such that the first graphene layer comes in contact with the transparent substrate.

Description

technical field [0001] The invention relates to a graphene transparent electrode and a manufacturing method thereof, and a supercapacitor manufactured by utilizing the graphene transparent electrode. Background technique [0002] A supercapacitor is a capacitor with a very large capacitance, also known as an ultracapacitor or an electrochemical capacitor. Unlike batteries that utilize chemical reactions, supercapacitors utilize charging phenomena based on simple ion migration or surface chemical reactions that migrate ions to the electrode-electrolyte interface. Therefore, fast charging and discharging can be realized, and the charging and discharging efficiency is high, and it has a semi-permanent cycle life, so that it can be used as an auxiliary battery or a battery substitute. [0003] Recently, in addition to the intrinsic properties of supercapacitors, more and more attention has been paid to improving properties such as transparency and flexibility in order to improv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/86H01G11/32
CPCH01G11/32H01G11/86Y02E60/13
Inventor 赵敬民金光燮金相闵李承模金宰玄李学珠
Owner KOREA INST OF MACHINERY & MATERIALS
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