Abstract:
PURPOSE: A method for manufacturing an electrode including polybenzimidazole with high activity of a triple phase boundary is provided to enhance the activity of a triple phase boundary that is an actual response location in a fuel cell and to manufacture a membrane electrode assembly having improved performance. CONSTITUTION: A method for manufacturing an electrode including polybenzimidazole comprises the steps of: providing a first mixture of polybenzimidazole and a catalyst supported in a carrier; and mixing polytetrafluoroethylene with the first mixture to prepare a second mixture. The first mixture production step is carried out by forming a dispersion by adding the catalyst supported in the carrier to the solution formed by dissolving polybenzimidazole in a solvent and removing the solvent from the dispersion.
Abstract:
PURPOSE: A method for operating a polymer electrolyte membrane fuel cell is provided to improve durability of a polymer electrolyte membrane fuel cell by controlling an operation process containing start and stop processes. CONSTITUTION: A method for operating a polymer electrolyte membrane fuel cell comprises a step of performing an operation cycle one time or more, wherein the operation cycle includes a pause step(S3), a start step(S4), an operation step(S1), and a stop step(S2).
Abstract:
PURPOSE: A multifunction logic device is provided to implement a multifunction logic gate in a narrow area by using spin information which is transferred from a ferromagnetic part to a channel. CONSTITUTION: A multifunction logic device comprises a substrate part(100), two input terminal ferromagnetic material patterns(102,103), and an output terminal ferromagnetic material(104). The substrate part has a channel layer. Two input terminal ferromagnetic material patterns are formed on the substrate part. The two input terminal ferromagnetic material patterns are the input terminal of a logic gate. The output terminal ferromagnetic material is formed on the substrate part. The output terminal ferromagnetic material is arranged between the two input terminal ferromagnetic material patterns. The output terminal ferromagnetic material is the output terminal of the logic gate.
Abstract:
본 발명은 강자성체로부터 반도체로의 스핀 주입 효율이 높은 스핀 트랜지스터에 관한 것이다. 본 발명에 따른 스핀 트랜지스터는, 내부에 채널층이 형성된 반도체 기판; 상기 반도체 기판 상에 형성되고, 상기 채널층으로 스핀분극된 전자를 주입하는 강자성체 소스; 상기 소스로부터 이격되어 상기 반도체 기판 상에 형성되고, 상기 채널층을 통과하는 전자의 스핀을 검출하기 위한 강자성체 드레인; 상기 소스와 드레인 사이에서 상기 반도체 기판 위에 형성되어 게이트 전압이 인가되는 게이트 전극; 및 상기 강자성체 소스/드레인과 상기 반도체 기판 사이에 형성된 방향의 결정성을 갖는 MgO 터널링막 또는 유기터널링막;을 포함한다. 스핀 트랜지스터
Abstract:
A magnetic memory device includes a substrate for reading and a magnetic memory cell. The substrate has a channel layer. The magnetic memory cell is formed on the substrate and has a magnetized magnetic material that transfers spin data to electrons passing the channel layer. Data stored in the magnetic memory cell are read by a voltage across both side ends of the channel layer that is generated when the electrons passing the channel layer deviate in the widthwise direction of the channel layer by a spin Hall effect.
Abstract:
본 발명에서는 로봇에 대한 주전원으로서 연료전지장치를 사용하고, 상기 주전원의 보조 전원으로서 이차전지를 사용하는 하이브리드 전력공급장치를 제공한다. 상기 하이브리드 전력공급장치에 있어서, 로봇의 소비 전력이 연료전지장치의 생산 전력을 초과하는 경우 이에 대응하여 이차전지와 연료전지장치 간의 부하를 배분시켜 보조 전원인 이차전지로부터도 로봇에 전력을 공급하도록 한다. 로봇, 연료전지, 이차전지, 하이브리드, 전력분배장치
Abstract:
A hybrid power supply device is provided to supply the stable power regardless of the sudden load variation using liquid fuel cell. A power distributing device(400) is connected to a robot(100). A fuel cell device(200) is connected to the power distributing device. The fuel cell device supplies the power to the robot. The fuel cell device includes a fuel cell stack and a peripheral device. The peripheral device operates the fuel cell stack. A secondary battery(300) is connected to the power distribution device. The secondary battery supplies the power to the peripheral device, the power distribution device, and an operation control device(500). If the power consumption exceeds the power produced by the fuel cell device, the secondary battery supplies the power to the robot. The operation control device is connected to the fuel cell device and the power distribution device. The operation control device controls the operation of the peripheral device.
Abstract:
A spin transistor using an epitaxial ferromagnetism-semiconductor junction is provided to reduce the length of a source and a drain by using the epitaxial ferromagnetic source and drain magnetized to a channel direction. A spin transistor includes a semiconductor substrate(110) having a channel layer(107). A ferromagnetism source(121) and a ferromagnetism drain are separately arranged in an upper part of the semiconductor substrate. The ferromagnetism source and drain are epitaxially grown on the semiconductor substrate. The ferromagnetism source and drain are magnetized to the longitudinal direction of the channel layer by the crystallization anisotropy. A gate(150) is arranged between the source and the drain in the upper part of the semiconductor substrate. The gate is insulated from the semiconductor substrate with the SiO2 gate insulating layer. The gate is formed in order to control the spin of the electron passing through the channel layer.
Abstract:
A cobalt-boron catalyst/carrier for generating hydrogen and a method for manufacturing the same are provided to improve the activity of the catalyst, reduce the loss of catalyst in a continuous circulation type reaction, and substitute for noble metal catalysts, by manufacturing the cobalt-boron catalyst/carrier using an alkaline borohydride solution. A cobalt-boron catalyst/carrier for generating hydrogen is manufactured by using an alkaline borohydride solution. One or two types of cobalt-boron catalysts are supported on a carrier, wherein the one or two types of cobalt-boron catalysts are cobalt-boron oxides or cobalt-boron compounds except cobalt-carbon oxides. The alkaline borohydride solution is prepared by mixing one hydroxide selected from NaOH and KOH into one borohydride selected from NaBH4, KBH4, and LiBH4.
Abstract:
본 발명에서는, 알칼리 붕소수소화물 용액을 이용한 수소 방출 반응용 촉매로서, Co와 B가 결합한 산화물 또는 Co와 B가 결합한 화합물(Co와 B가 결합한 산화물을 제외한다) 중 어느 하나 또는 둘을 포함하는 것을 특징으로 하는 알칼리 붕소수소화물 용액을 이용한 수소 방출 반응용 Co-B 촉매를 제공한다. 또한, 본 발명에서는, 알칼리 붕소수소화물 용액을 이용한 수소 방출 반응용 촉매의 제조 방법에 있어서, 환원제로 알칼리 붕소수소화물 용액을 이용하여 Co 2+ 를 환원하는 단계(S1); 및 환원 후 침전된 촉매를 건조 및 소성하여, Co와 B가 결합한 산화물 또는 Co와 B가 결합한 화합물(Co와 B가 결합한 산화물을 제외한다) 중 어느 하나 또는 둘을 포함하는 촉매를 수득하는 단계(S2)로 구성되는 것을 특징으로 하는 알칼리 붕소수소화물 용액을 이용한 수소 방출 반응용 Co-B 촉매의 제조 방법을 제공한다. 본 발명에 따른 알칼리 붕소수소화물 용액을 이용한 수소 방출 반응용 Co-B 촉매는, 귀금속 촉매인 Ru 촉매에 비하여 30~50% 이상의 높은 활성을 갖는 것이므로, 상용의 Co 금속 촉매와 달리 비귀금속 촉매로서 고가의 Ru 등 귀금속 촉매를 대체할 수 있다. 붕소수소화물, 루테늄, 수소, 촉매, 고분자전해질막연료전지