Abstract:
PURPOSE: A method for increasing the hydrophilicity of crystalline carbon and a method for manufacturing a platinum carrying catalyst using the same are provided to improve the rate, the dispersion, and the durability of the catalyst. CONSTITUTION: A pi-pi interaction is formed between a surfactant and crystalline carbon. A hydrophilicity is generated by the hydrophilic functional group of a surfactant. The surfactant is one selected from 1-pyrene carboxylic acid, 9-Anthracene carboxylic acid, Fluorene-1-carboxylic acid, 1-Pyrenebutyric acid, Naphthoic acid, 1-Pyreneacetic acid, Naphtho-2-Aminopyridine-3-carboxylic acid, 1,4-Benzodioxane-6-carboxylic acid, 2-mercaptobenzimidazole, 2-Naphthalenethiol, 1-mercaptopyrene, 6-mercaptobenzopyrene, and 1,4-benzen dithiol. The crystalline carbon is one selected from carbon nano-tube, carbon nano-fiber, carbon nano-coil, and carbon nano-cage.
Abstract:
본 발명은 연료전지용 고 비율 백금 담지 촉매 제조방법에 관한 것으로서, 더욱 상세하게는 폴리올 공정을 이용하여 연료전지에 사용되는 결정성 담지체 소재인 선형탄소섬유(CNF)에 백금을 담지시킨 연료전지용 고 비율 백금 담지 촉매 제조방법에 관한 것이다. 이를 위해, 본 발명은 용매이자 환원제 역할을 하는 용매에 NaOH, 백금전구체, 카본(Carbon)을 소정의 비율로 혼합하는 단계와; NaOH, 백금전구체, 카본이 혼합된 용액을 140-180℃ 사이에서 리플럭스 해줌으로써, 에틸렌 글리콜의 산화를 통한 백금전구체의 환원이 이루어지는 단계와; 백금과 담지체간 상호인력을 유발하여 백금이 담지되도록 PH를 조절하는 단계와; 환원백금의 안정화 분위기를 약화시키면서 담지체에 대한 백금 담지 수율을 높이고자 첨가물을 첨가하는 단계와; 촉매를 회수하여 세척 및 열처리를 통하여 불필요한 유기물을 제거하는 단계로 이루어지는 연료전지용 고비율 백금 담지 촉매 제조방법을 제공한다. 연료전지, 첨가물, 디아이 워터, 백금 전구체, 촉매, 담지체, 카본
Abstract:
The present invention relates to a titanium suboxide support for a catalyst electrode for a fuel cell and to a low-temperature synthesis method of the titanium suboxide support. More specifically, the present invention relates to titanium suboxide (Ti_xO_2x-1) nanoparticles which are useful as a support for a catalyst electrode for a fuel cell; and to a method for synthesizing the titanium suboxide (Ti_xO_2x-1) nanoparticles at a low temperature of 600-900°C by using TiO_2, a Co catalyst and hydrogen gas. The titanium suboxide nanoparticles have the advantage of having excellent corrosion resistance to acid, high thermal conductivity and electrical conductivity, and excellent durability. Therefore, the catalyst electrode manufactured by using the titanium suboxide nanoparticles as a support shows high catalytic activity and enhanced oxidation-reduction properties through a fuel cell test.
Abstract:
PURPOSE: A manufacturing method of an electrode for a fuel cell is provided to continuously maintain a catalyst layer and a porous structure for operation of a fuel cell, to be able to manufacture a pore structure with various sizes and distributions, and to facilitate control of the catalyst layer and the porous structure. CONSTITUTION: A manufacturing method of a Catalyst layer-combined electrode for a polymer electrolyte membrane fuel cell comprises: a step of providing plate-like porous metal foam(2,2a,2b) or a metal aerogel having a porous structure of nanometer or micron size; a step of manufacturing a catalyst layer-integrated electrode by fixing a catalyst to the metal foam or metal aerogel. The manufacturing method additionally comprises a step of impregnating an ion-conducting material into the catalyst layer-integrated electrode. [Reference numerals] (AA,EE) Gas; (BB,FF) Liquid; (CC) Large pores; (DD) Small pores; (GG,JJ) Electron; (HH, II) Ion
Abstract:
PURPOSE: A fuel cell stack for an electric automobile is provided, to improve the assembling property and to prevent the loss of electric power by preventing the generated current from flowing along the cooling water. CONSTITUTION: The fuel cell stack comprises a plurality of subassemblies(10) comprising a pair of bipolar plates(11), a pair of gasket members(15) adhered to the inside of the bipolar plates, and an ion exchange member(17) adhered to the inside of the gasket members; a cooling jacket(20) inserted between the subassemblies; and a cooling channel(30) which is placed in the outer side of the subassemblies and supplies the cooling water(31) to the cooling jacket. Preferably the gasket is made of an ABS resin; and the cooling jacket is made of a metallic material.
Abstract:
PURPOSE: An apparatus for simulating the humidification of a fuel cell is provided, to determine the temperature, the pressure and the flow amount of the humidifying water supplied to a fuel cell stack more precisely. CONSTITUTION: The apparatus(100) comprises a housing assembly(10) which has first and second entrance holes(11, 13) at the one side and first and second exit holes(15, 17) at the other side and the hollow inside, and which contains a heat wire member(35) to the length direction and a filtration membrane(19) separating the length direction into an upper part(12) and an under part(14); a flow amount control part(20) which is set on the first path(21) connected with the first entrance hole and control the flow amount of air or hydrogen(16) flown into the upper side of the housing assembly; a humidifying water supply part(30) which is set through the second path connected with the second entrance hole, is provided with a body containing the humidifying water, a heat wire member for heating the humidifying water and a humidifying water display part for displaying the amount of the humidifying water in the body, and supplies the humidifying water(18) to the lower part of the housing assembly; and a pressure gauge(34) which is set on the third path(32) connected with the fuel cell stack by connected to the first exit hole.
Abstract:
본 발명은 연료전지용 촉매전극을 위한 티타늄 서브옥사이드 지지체와 이의 저온 합성방법에 관한 것으로서, 더욱 상세하게는 연료전지의 촉매전극의 지지체로 유용한 티타늄 서브옥사이드(Ti x O 2x-1 ) 나노입자와, TiO 2 , Co 촉매 및 수소가스를 이용하여 600∼900℃의 낮은 온도에서 상기 티타늄 서브옥사이드(Ti x O 2x-1 ) 나노입자를 합성하는 방법에 관한 것이다. 상기 티타늄 서브옥사이드 나노입자는 산에 대한 부식저항성이 뛰어나고 열적, 전기적인 전기전도도가 크고, 내구성이 뛰어난 장점을 가지고 있으므로, 이를 지지체로 사용하여 제조된 촉매전극은 연료전지 테스트를 통해 높은 촉매활성과 산화환원 특성이 향상된 효과를 나타낸다.