Abstract:
Provided are a silicon-based anode material including a nitrogen-doped carbon coating and a lithium secondary battery including the same. According to the present invention, the silicon-based anode material including a nitrogen-doped carbon coating is manufactured by a mixing process with 1-ethyl-3-methylimidazolium dicynamide, which is an ionic liquid containing a large quantity of nitrogen; and by a carbonizing process. Through this method, a lithium secondary battery having excellent discharging capacity and high output properties can be manufactured.
Abstract:
PURPOSE: A manufacturing method of a negative electrode active material is provided to economically manufacture a composite active material for a negative electrode, having improved cycle performance. CONSTITUTION: A manufacturing method of a negative electrode active material comprises a step of mixing a carbon-containing resin particle and silicon nanoparticle; a step of forming a resin matrix containing the silicon nanoparticle by compressing the resin particle; and a step of heat-treating the resin matrix, and forming the porous carbon matrix containing silicon nanoparticle. The resin matrix has a spherical particle shape, and the carbon matrix also has a spherical particle shape. The carbon-containing resin particle additionally includes nitrogen atoms. On the spherical carbon particle, the nitrogen is doped. [Reference numerals] (AA) Mix resin particles containing carbon and silicon nanoparticles; (BB) Condense resin particles; (CC) Heat-process/carbonize resin matrix
Abstract:
PURPOSE: A graphene surface modification method using an organic conjugated polymer is provided to use graphene by dispersing in various solvents while maintaining intrinsic and excellent properties of graphene. CONSTITUTION: A graphene surface modification method using an organic conjugated polymer comprises the step of obtaining graphene, of which a surface is modified to have a hydrophilic property by introducing a hydrophilic functional group to a surface of the graphene through binding of the graphene and the organic conjugated polymer. The method comprises the step of obtaining graphene, of which a surface is modified to have a hydrophobic property by introducing a hydrophobic functional group to a surface of the graphene with a surface that is modified to have a hydrophilic property.
Abstract:
질소 도핑된 탄소 코팅을 포함하는 실리콘계 음극활물질과 이를 포함하는 리튬이차전지가 제공된다. 본 발명에 따른 질소 도핑된 탄소 코팅을 포함하는 실리콘계 음극활물질은 질소를 다량 함유하고 있는 이온성 액체인 1-ethyl-3-methylimidazolium dicynamide와의 혼합과정 및 탄화과정을 통해 이루어지는 것을 특징으로 하며, 이를 통해 우수한 방전용량 및 고출력 특성을 가지는 리튬이차전지를 제조할 수 있다.
Abstract:
환원 방식의 실리콘 나노구조체 제조방법, 실리콘 옥시카바이드 나노구조체 제조방법, 이에 의하여 제조된 실리콘 나노구조체 및 이를 포함하는 리튬 이차전지가 제공된다. 본 발명의 일 실시예에 따른 환원 방식의 실리콘 나노구조체 제조방법은 실리콘 함유 블록공중합체를 자기조립시켜, 상기 실리콘이 실리카로 산화된 블록공중합체 패턴을 제조하는 단계; 및상기 자기조립된 블록공중합체 패턴의 실리카를 환원시켜, 상기 자기조립된 블록공중합체 패턴에 대응되는 패턴의 실리콘 나노구조체를 제조하는 단계를 포함하며, 본 발명에 따르면, 자기조립 방식과 마그네슘 환원 방식을 결합시킨 공정으로 실리콘 나노구조체를 제조한다. 그 결과, 원하는 크기의 나노구조체를 자기조립 공정의 조절을 통하여 제조할 수 있으며, 10nm 이하 크기의 나노구조체 제조가 가능하다.
Abstract:
A method for manufacturing a transparent conducting oxide is provided to improve visible ray transmittance and electric conductivity of the oxide, and therefore to make the oxide useful for displays, image sensors, touch panels, digital papers, electromagnetic wave shielding materials, etc. A method for manufacturing a transparent conducting oxide includes the steps of: (a) preparing a CNT dispersion by dispersing a CNT with a carboxyl group being exposed and adding at least one base selected from the group that consists of DCC or CDI coupler and HOBt, HOPy(2-hydroxypyridine), HONB, DIEA, and NMI; (b) reacting a substrate with an amine on the surface with the CNT dispersion to form a CNT single layer on the substrate surface; (c) reacting the CNT single layer with an amine based organic compound to form an organic amine layer on the CNT single layer, and reacting the organic amine with the CNT dispersion to laminate the CNT; (d) repeating the step (c) n times, making the CNT layers and the organic amine layers alternately laminated n times, to obtain a CNT film; and (e) impregnating the CNT film into a mixed solution of water, alcohol, and metallic salts to form metallic nanoparticles on the CNT surface.
Abstract:
The present invention relates to a graphene manufacturing method and graphene manufactured by the same. The graphene manufacturing method according to the present invention enables the mass production of graphene at low temperatures with a safe and simple process by utilizing a metallic salt hydrate, thereby obtaining economic efficiency and being effective. [Reference numerals] (AA) Expanded graphite;(BB) Natural graphite
Abstract:
The present invention provides a transcription method for graphene which maintains the original matter properties of the graphene with excellent electrical, thermal, and mechanical properties, in-situ transcribes the the graphene to a substrate, and improves binding force between the graphene and another graphene or the graphene and the substrate by forming a binder layer on the substrate. The transcribed graphene has excellent electric and thermal conductivity, and mechanical properties.