Abstract:
알칼리음이온교환막물 전기분해장치의막전극접합체로서, 음이온교환막및 상기음이온교환막상의전극물질로서니켈이전기도금된친수성다공성탄소재료를포함하는막전극접합체를사용한다. 이에따라, 알칼리음 이온교환막물 전기분해장치에서음 이온교환막상에전극으로사용되는금속촉매의양을현저히줄일수 있고, 전극의두께를크게감소시킬수 있으며, 가스나물의물질전달이매우빠르게된다. 또한, 막전극접합체의제조과정이종래에비하여매우쉽고단순하며또한제조비용을크게저감할수 있다.
Abstract:
알칼리 음이온 교환막 물 전기 분해 장치의 막전극 접합체로서, 음이온 교환막 및 상기 음이온 교환막 상의 전극 물질로서 니켈이 전기 도금된 친수성 다공성 탄소 재료를 포함하는 막전극접합체를 사용한다. 이에 따라, 알칼리 음 이온 교환막 물 전기 분해 장치에서 음 이온 교환막 상에 전극으로 사용되는 금속 촉매의 양을 현저히 줄일 수 있고, 전극의 두께를 크게 감소시킬 수 있으며, 가스나 물의 물질 전달이 매우 빠르게 된다. 또한, 막전극 접합체의 제조 과정이 종래에 비하여 매우 쉽고 단순하며 또한 제조 비용을 크게 저감할 수 있다.
Abstract:
본 발명은 CO 하에서 열처리된 PtAu 나노입자 촉매 및 이의 제조방법에 관한 것으로 Pt x Au y 나노입자 촉매를 일산화탄소(CO) 분위기 하에서 열처리함으로써, 높은 Pt 표면적 및 우수한 산소환원반응(ORR) 활성을 가지므로 연료전지에 적용하면 고효율 및 우수한 품질의 연료전지를 제공할 수 있다.
Abstract:
The present invention relates to a cardo-polybenzimidazole copolymer, a gas separation membrane and a manufacturing method thereof and, more particularly, to a gas separation membrane which is manufactured using a synthesized cardo-polybenzimidazole copolymer having a cardo group and an aromatic ether group introduced into a main chain of polybenzimidazole and has greatly improved oxygen permeability; and a manufacturing method thereof. The cardo-polybenzimidazole copolymer manufactured according to the present invention can provide a gas separation membrane which has improved solubility compared with existing polybenzimidazole copolymers, maintains thermal stability, has excellent mechanical properties to be able to be manufactured into a film shape, and has greatly improved gas permeability, specifically oxygen permeability.
Abstract:
The present invention relates to a method for synthesizing and preparing Pt-Ni alloy nanoparticles with a hollow structure, and to an electrode catalyst for a fuel cell prepared by the same to have enhanced performance. When the difference in the rate of reduction of metal precursors according to various embodiments of the present invention is employed, it is possible to synthesize a single container and a single process by putting a reducing agent in two or more metal precursors and a carbon carrier which are in a state of being stirred together, and also to synthesize alloy nanoparticles with a binary or more hollow structure. In addition, it is possible to control the size of the nanoparticles of the present invention by controlling the content of a Ni precursor without a surfactant and a stabilizer which are required for controlling the size and shape of particles. Furthermore, the performance of an oxygen reduction reaction and the durability of a catalyst are improved by the unique characteristics of the Pt-Ni alloy nanoparticles with a hollow structure.
Abstract:
PURPOSE: A self humidifying method of a fuel cell device is provided to easily humidify a room without a humidifier; reduce the size of the fuel cell system without a separate cell for humidification; increase a fuel power density. CONSTITUTION: A self humidifying method of a fuel cell device in which more than one alkali anion exchange membrane fuel cell or a stack and more than one polymer electrolyte membrane fuel cell or the stack are arranged by turns comprises the following: a step of supplying hydrogen gas to the alkali anion exchange membrane fuel cell or the stack; a step of supplying the hydrogen gas which is emitted from the alkali anion exchange membrane fuel cell or the stack, and which is humidified with the water which is generated in the alkali anion exchange membrane fuel cell or the stack to the polymer electrolyte membrane fuel cell or the stack.
Abstract:
PURPOSE: A hydrogen pump system is provided to separate or purify hydrogen by an independent operation without external power source. CONSTITUTION: A hydrogen pump system includes m hydrogen pumps and n fuel cells. A first hydrogen pump includes a first electrode-membrane assembly; a first hydrogen supply unit located in one side of the first hydrogen pump electrode-membrane assembly; a first residual gas exhaust unit; and a hydrogen exhaust unit located in the opposite side of the electrode-membrane assembly. Other hydrogen pumps are similar to the first hydrogen pump. [Reference numerals] (AA) Mixed gas; (BB) Concentration; (CC) Hydrogen pump; (DD) Air