Abstract:
Disclosed are an electrode structure having a roll shape, an electrode and an electric device applying the same, and a method for manufacturing the electrode structure. The disclosed electrode structure has a structure of a graphene film having a nano material dispersed on at least one side wound in a roll shape. The electrode structure can have a high electrode density while securing a space making the diffusion of an electrolyte ion between the contact surfaces of the graphene film easy, and can be stably maintained in a shape of being vertically oriented on a current collector when applied to an electrode of an energy storage device such as a supercapacitor.
Abstract:
Disclosed are a method and an appartus for restoring the physical properties of graphene. The method and the apparatus for restoring the physical properties of graphene restore the physical properties of graphene by exposing the graphene to low density plasma within a range of 0.3*10^8-30*10^8 cm^-3 in a condition in which the graphene is grounded. The method and the apparatus for restoring the physical properties of graphene are compatible with a silicon process, are environment-friendly, enables a high speed process, a low temperature process, and a large area process.
Abstract:
PURPOSE: A metal corrosion prevention system is provided to prevent the corrosion of metal as highly corrosive metal ions cannot be distributed inside a metal layer such as an electrode, thereby preventing the corrosion of the metal. CONSTITUTION: A metal corrosion prevention system includes a solution including first metal ions, a metal layer, and a graphene layer. The metal layer includes a second metal partially dipped into the solution. The graphene layer is formed on the metal layer and formed with a chemical vapor deposition method. The first metal has a reducing power larger than that of the second metal. [Reference numerals] (AA) Voltage vs. Li/Li; (BB) Discharge; (CC) Charge; (DD) Capacity (μAh/cm^2)
Abstract:
PURPOSE: An alkali metal containing monolayer graphene and an electronic device including the same are provided to maintain the inherent characteristic of the graphene by forming high band gap in the graphene through the localization of charges based on non-chemical bonds. CONSTITUTION: Alkali metals are prepared by being selected from lithium, sodium, potassium, rubidium, cesium, and francium. The alkali metals are placed on at least one surface of a monolayer graphene. The alkali metals are in second dimensional thin film structure. About 30-99% of the entire surface area of the monolayer graphene is occupied by the alkali metals. The band gap of the monolayer graphene is more than or equal to 0.4eV. The area of the monolayer graphene is more than or equal to 1cm^2.
Abstract:
PURPOSE: A method of forming an oxide film is provided to remove an SiOC film between an SiC substrate and an SiO2 oxide film by projecting beam on an SiO2 oxide film after forming the SiO2 oxide. CONSTITUTION: In a method of forming an oxide film, an SiC substrate(110) is prepared. An SiO2 oxide film(120) is formed on the SiC substrate. The SiO2 oxide film is formed through thermal oxidation method using water and oxygen. The SiOC film(130) is formed between the SiC substrate and the SiO2 oxide film. An electron beam is researched on the SiO2 oxide film.
Abstract:
PURPOSE: A carbon nanotube, a device containing the carbon nanotube, and a method for controlling the optical inter-band transition of the carbon nanotube are provided to improve the sensitivity and selectivity (purity) of a device. CONSTITUTION: A carbon nanotube is a p-doped carbon nanotube, wherein the carbon nanotube shows the optical inter-band transition in the VIS-NIR range, and only one optical inter-band transition appears at the corresponding p-doped state of the carbon nanotube. The carbon nanotube is p-doped by using an oxidant having a reduction potential of 0.8eV or more based on a standard hydrogen electrode. The carbon nanotube is p-doped by using an oxidant which is a metal salt or a nitronium compound.