Abstract:
감귤류껍질에알칼리활성화제를제공하고열처리하여감귤류껍질로부터나노구조화된탄소재료를얻을수 있다. 이에따라, 기존과같은복잡한공정을거칠필요없이, 나노구조화된탄소재료를간단하고용이하게얻을수 있다. 얻어진나노구조탄소재료는풍부한이종원소들을포함하고나노크기의기공을가질수 있으며전기화학적성능이우수하다. 또한, 이를이용한에너지저장장치는전하저장특성, 충·방전거동, 수명특성등이우수하여에너지저장장치로서유용하게사용될수 있다.
Abstract:
베타시트구조를포함하거나결정화에의하여베타시트구조를형성할수 있는탄소전구체또는단백질을이용하여탄소물질을제조한다. 상기베타시트구조는열이가해짐에따라혼성공명구조로전환될수 있다. 이에따라, 탄화과정이단순하고, 종래와달리, 촉매나유기용매의사용이없는친환경적탄소물질제조방법을제공할수 있다. 또한, 베타시트함량조절을통하여탄소물질의다양한형태와미세구조를조절할수 있다.
Abstract:
The present invention relates to a carbon nanotube/metal oxide particle composite film which can be used as an anode material of a lithium ion battery. According to the present invention, a free-standing composite film having a thickness in micrometers is produced by filtering a solution, in which acid-treated carbon nanotubes and metal oxide particles are dispersed, through a vacuum filtration technique. Accordingly, the production process is simple so that the film, as an anode material of a lithium ion battery, can have effects such as excellent cycle stability, high reversible capacity, and excellent rate capability during repetitive charge/discharge. Moreover, the metal oxide particle has a porous structure and a high surface area so that an overall reaction area and reversible capacity are enlarged. The metal oxide particles exist by being uniformly dispersed in a nanoporous network structure of the carbon nanotubes and by being strongly bonded by means of the carbon nanotubes, so as to have high conductivity and be applied as an anode material of a lithium ion battery without a binder, a conductive filler, or a substrate.
Abstract:
본 발명은 가교된 탄소나노튜브 볼 및 폴리스티렌/가교된 탄소나노튜브 볼 복합체를 제조하는 방법에 관한 것이다. 본 발명은 수용액상과 유기상의 2상(相) 용액을 동시현탁중합법을 이용해 유기상의 스티렌 단량체를 중합한 후, 세척과 건조를 통해 구형의 가교된 탄소나노튜브 볼을 제조한다. 또한 제조한 가교된 탄소나노튜브 볼을 전기전도성 마이크로 충진제로 사용하여 폴리스티렌/가교된 탄소나노튜브 볼 복합체를 제조한다. 본 발명에 따르면 가교된 탄소나노튜브 볼이 표면 및 내부에 탄소나노튜브를 포함하므로, 고분자 복합재의 보강제나 충진제로 사용될 수 있으며, 전기전도성 입자로 사용될 수 있다. 또한 폴리스티렌/가교된 탄소나노튜브 볼 복합체는 폴리스티렌보다 내충격성 및 물리적 특성이 향상된다. 탄소나노튜브, 볼, 폴리스티렌, 복합체, 마이크로 충진제
Abstract:
PURPOSE: A cross-linked carbon nanotube ball and polystyrene and a method for manufacturing the cross-linked ball complex are provided to use the cross-linked carbon nanotube ball as a reinforcing agent or a filler of a polymer composite by including the carbon nanotube in the inner part and the outer part of the ball. CONSTITUTION: A method for manufacturing a cross-linked carbon nanotube comprises the following steps: manufacturing an organic phase of a monomer including water phase in which a stabilizer is dissolved, the carbon nanotube, a cross-linking agent(X), and an initiator(I); manufacturing emulsion by stirring the organic phase of the monomer and the water phase; forming the cross-linked carbon nanotube ball by polymerizing the monomer using a simultaneous suspension polymerization method; and washing the cross-linked carbon nanotube ball.