Abstract:
본 기술은 금속지지체 표면 위에 성장 또는 코팅된 탄소나노튜브 구조체 관한 내용으로, 특히 금속지지체와 탄소나노튜브의 접촉 강도를 증대시키기 위한 방법을 제안에 관한 것이다. 상기와 같은 목적 달성을 위한 본 발명은 금속지지체 표면 위에 금속 성분을 함유하는 탄소나노튜브를 접촉시키는 단계; 탄소나노튜브 내부에 포함된 금속 성분과 금속지지체와의 반응을 개시하도록 탄성나노튜브가 접촉된 금속지지체를 열처리하는 단계; 및 열처리온도의 유지에 의해 두 금속 성분 사이에 생성된 금속간화합물 (intermetallic compounds)을 성장시키는 단계를 포함한다. 본 발명은 기존 나노기술에서 해결해야만 하는 가장 큰 문제점 중의 하나인 매크로 크기의 지지체와 나노물질 사의 열약한 접촉 강도를 크게 향상시킬 수 있는 방법을 제시할 수 있기 때문에, 다양한 구조의 나노-매크로 계층간 구조를 구성할 수 있어 다양한 응용 분야를 개척할 수 있을 뿐 아니라, 나노물질의 상용화에 크게 기여할 수 있을 것으로 기대된다.
Abstract:
The present invention relates to a metal-carbon composite supported catalyst for a hydrogen production process using co-vaporization and a manufacturing method thereof and more specifically, to a manufacturing method for a metal-carbon composite supported catalyst for a hydrogen production process which is able to maintain excellent durability without agglomeration in a catalyst reaction at high temperatures since a metal-carbon composite of a core-shell structure by co-vaporization is supported on the surface of an oxygen-based support coated with carbon, and a metal-carbon composite supported catalyst for a hydrogen production process manufactured thereby. The present invention is able to have high performance and high durability by preventing metal particles from being aggregated, being eliminated and being corroded when being applied to a poor reaction conditions such as high temperatures, long period, acid condition, alkali condition and the like since carbon shells cover the part or the whole of surfaces of metals. Accordingly, the present invention prevents the deactivation of a catalyst or the progress of side reactions, thereby being able to be applied to a hydrogen production process.
Abstract:
The present invention relates to a manufacturing method of an electrode for a fuel cell and an electrode for a fuel cell manufactured thereby, and, more specifically, to a manufacturing method of an electrode for a fuel cell, being manufactured to grow nanocarbon on the surface of a substrate for a fuel cell and to simultaneously highly disperse platinum-carbon composite catalyst particles of a core-shell structure between nanocarbons using the co-vaporization process of platinum precursor and carbon precursor, and an electrode for a fuel cell manufactured thereby. According to the manufacturing method of the present invention, an electrode for a fuel cell with a drastically improved electrochemical performance and durability is able to be manufactured with a simple process.
Abstract:
본 발명은 각종 실험실, 반도체 산업, 시약제조 및 병원 검사실 등 다양한 분야에서 사용되는 수증기, 증류수 제조장치 및 이들의 제조방법에 관한 것으로서, 자세하게는 증류수를 만드는데 필수적인 수증기의 제조 열원으로 전기 대신에 도시가스 또는 LPG와 같은 연료가스를 촉매버너로 연소하여 발생한 연소열을 사용하는 것을 특징으로 하는 수증기, 증류수 제조장치 및 이들의 제조방법에 대한 것이다. 본 발명에 따른 수증기, 증류수 제조장치 및 제조방법은 촉매버너에서 발생한 원적외선 복사에너지 형태의 열을 수증기 제조에 활용함으로써 매우 높은 에너지 효율을 구현할 수 있다.
Abstract:
PURPOSE: A nanowire synthesis using biomass capable of mass producing nanowires from cheap natural sources and a material thereof are provided to synthesize nanowires having apatite structures. CONSTITUTION: A nanowire synthesis using biomass comprises the following steps: preparing biomass which includes calcium composition inside a reactor; increasing the inner temperature up to the synthesis temperature while providing transfer gas; and providing vapor source which includes phosphorus component into the reactor and synthesizing nanowires composed of calcium phosphate compounds. The biomass matter is henequen and kenaf which are wood composite or rhodophyta and brown seaweed which are marine algae. The nanowire resultant temperature is 700-1000 deg. Celsius and nanowire synthesis time is 1 minutes -2 hours. The vapor source is composed of one of 1) hydrogen and phosphorous source, 2) carbon source and phosphorous source and 3) aromatic carbon - phosphorus compound.