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公开(公告)号：KR1019980017845A
公开(公告)日：1998-06-05
申请号：KR1019960037662
申请日：1996-08-31
Applicant: 한국과학기술연구원
IPC: H01M10/30
Abstract: 본 발명은 용융 탄산염 연료 전지 (molten carbonate fuel cell, 이하, 『MCFC』로 칭함)에 사용되는 환원전극 (cathode) 및 그의 제조 방법에 관한 것이다. 이러한 환원전극에서는 가격이 저렴하고 전기화학적 성능도 비교적 우수한 NiO가 주로 사용되지만, 이러한 NiO는 용융 탄산염 연료 전지의 전해질에 대한 비교적 큰 용해로 인하여 전지의 전기적 단락을 일으켜서 전지의 수명을 단축시키는 문제점을 안고 있었다. 따라서, 본 발명에서는 환원전극의 주재료인 NiO를 그대로 사용하면서 여기에 염기성 물질인 알칼리 토금속 산화물을 첨가하거나 함침시켜 NiO의 용해를 감소시킴으로써 통상의 MCFC용 환원전극보다 수명이 더 긴 환원전극을 제조할 수 있게 되었다.
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公开(公告)号：KR100429685B1
公开(公告)日：2004-05-03
申请号：KR1020010080124
申请日：2001-12-17
Applicant: 한국과학기술연구원
IPC: H01M8/02
CPC classification number: H01M8/026 , H01M8/0206 , H01M8/0228 , H01M8/0267 , H01M8/0271 , H01M8/2483 , Y02P70/56
Abstract: 본 발명은 소형 고분자 전해질 연료전지용에 사용되는 가스분배판 및 이를 이용한 분리판에 관한 것으로, 더욱 상세하게는 스텐레스스틸 등 금속을 모재로 하여 가스흐름 통로가 에칭된 소형 고분자 전해질 연료전지용 다공성 가스분배판 및 이를 포함하여 제작된 소형 고분자 전해질 연료전지용 분리판에 관한 것이다.
본 발명에 의한 소형 고분자 전해질 연료전지용 다공성 가스분배판을 포함하여 제조된 분리판은 기존의 그래파이트 분리판에 비해 박막화가 가능하고, 동시에 적정수준의 물리적 강도를 유지하여 외부 충격에 의한 파괴 염려가 없다. 또한, 본 발명에 의한 소형 고분자 전해질 연료전지용 분리판은 에칭에 의해 형성된 가스 채널의 규격이 균일하여 MEA와 접합시 접촉 저항이 감소되어 연료전지의 성능이 향상된다. 더욱이, 본 발명에 의한 소형 고분자 전해질 연료전지용 분리판은 스텐레스스틸 등 금속판을 모재로 사용하여 미세한 가스 채널을 형성시키므로, 에칭 가공시 비용과 노력을 절감시키고, 대량생산에도 용이하다. 따라서, 본 발명에 의한 소형 고분자 전해질 연료전지용 분리판을 사용하여 소형 고분자 전해질 연료전지를 구성할 경우 기존에 비해 출력 밀도, 신뢰성 및 경제성이 향상될 수 있다.Abstract translation: 公开了一种由金属材料制成的用于小型燃料电池的穿孔气体分配板，所述金属材料诸如通过蚀刻工艺在其上形成气体流路的不锈钢制成，以及使用所述气体分配板制造的隔板。 与常规石墨隔板相比，使用气体分配板制造的隔板可能更薄并且由于其更高的物理强度而不易受到外部施加的力的破坏。 另外，由于形成在气体分布板上的气体通道具有相同的尺寸，因此接触电阻降低，因此燃料电池的性能提高。 此外，由于隔板由诸如不锈钢的金属材料制成，所以当蚀刻隔板时成本和人力减少，并且因此可以大量生产隔板。 因此，包括隔板的紧凑型燃料电池在功率密度，可靠性和经济效率方面是有利的。
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公开(公告)号：KR100407592B1
公开(公告)日：2003-11-28
申请号：KR1020010051994
申请日：2001-08-28
Applicant: 한국과학기술연구원 , 주식회사 티씨 싸이언스
IPC: C08J7/18
Abstract: PURPOSE: A method for preparing a soft lens is provided to obtain an unharmful soft lens for inhibiting the adsorption of proteins, thereby improving the wearing feeling and the lifetime of the lens. CONSTITUTION: The method comprises the steps of treating the surface of a contact lens with plasma to activate the surface; and grafting the protein adsorption inhibiting material represented by the formula 1 onto the surface, wherein R1 is H or methyl group; and R2 is polyethylene glycol, polypropylene glycol, polyethylene glycol-polypropylene glycol copolymer, polyethylene glycol-polypropylene glycol-polyethylene glycol copolymer, poly(vinyl pyrrolidone), their copolymers or their mixtures. The protein adsorption inhibiting material has a molecular weight of 100-10,000. Preferably the plasma treatment is carried out by using the plasma of 1 W to 1 kW; and the grafting is carried out at a temperature of 10-100 deg.C and in the presence of sodium hydrogensulfite as an oxidizing agent.
Abstract translation: 目的：提供一种制备软质镜片的方法，以获得用于抑制蛋白质吸附的无害软质镜片，由此改善镜片的佩戴感觉和寿命。 组成：该方法包括以下步骤：用等离子体处理隐形眼镜的表面以激活表面; 并将式1所示的蛋白吸附抑制材料接枝到表面上，其中R1为H或甲基; R2为聚乙二醇，聚丙二醇，聚乙二醇 - 聚丙二醇共聚物，聚乙二醇 - 聚丙二醇 - 聚乙二醇共聚物，聚乙烯吡咯烷酮，它们的共聚物或它们的混合物。 蛋白质吸附抑制材料的分子量为100-10,000。 优选地，等离子体处理通过使用1W至1kW的等离子体来进行; 接枝在10-100℃的温度和作为氧化剂的亚硫酸氢钠存在下进行。
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公开(公告)号：KR100346016B1
公开(公告)日：2002-08-01
申请号：KR1019990049046
申请日：1999-11-06
Applicant: 한국과학기술연구원
IPC: F28D20/00
CPC classification number: Y02E60/142
Abstract: 축열보일러및 축열온풍기와같은축열식난방용전기기기와빙축열시스템과같은축열식냉방용전기기기등을하나의기기에장착하여시스템화함으로써기존의기기에비하여다양한용도와작은크기와그리고적은비용이드는다목적의잠열축열재를이용한냉난방겸용시스템에관한것이다.
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公开(公告)号：KR100303609B1
公开(公告)日：2001-11-02
申请号：KR1019980049137
申请日：1998-11-16
Applicant: 한국과학기술연구원
IPC: H01M4/48
Abstract: PURPOSE: Provided is a process for producing a LiCoO2 coated air-electrode for a molten carbonate fuel cell(MCFC), which can prevent NiO, being a main material of the air-electrode, from dissolving in an electrolyte, therefore, can produce the air-electrode having long lifetime than the conventional air-electrode for the MCFC. CONSTITUTION: The process for producing the LiCoO2 coated air-electrode for the MCFC comprises the steps of: dissolving lithium salts and cobalt salts in water; adding a chelate agent such as polyethylene glycol to the produced water solution to produce sol; soaking a NiO electrode for the MCFC in the produced sol and forming gel on the surface of pores of the electrode; drying and calcining the electrode. And another process for producing the LiCoO2 coated air-electrode for the MCFC comprises the steps of: dissolving the lithium salts and cobalt salts in a solvent; impregnating the pores of the NiO electrode with the solution; drying and calcining the electrode.
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Patent Agency Ranking
公开(公告)号：KR1020010091642A
公开(公告)日：2001-10-23
申请号：KR1020000013526
申请日：2000-03-17
Applicant: 한국과학기술연구원
IPC: H01M8/10
CPC classification number: Y02P70/56
Abstract: PURPOSE: A method for manufacturing a composite polymer electrolyte membrane for a polymer electrolyte membrane fuel cell is provided to manufacture a composite polymer membrane which is thin, and has high ionic conductivity and physical strength by impregnating a porous membrane with polymer electrolyte resin in a form of perfluorosulfonyl halogen compound using various methods. CONSTITUTION: The method comprises the steps of impregnating an inert porous polymer membrane with a perfluorosulfonyl halogen compound resin; and converting the impregnated perfluorosulfonyl halogen compound into sulfuric acid by sequentially treating high temperature alkaline solution, sulfuric acid solution and ultra pure water on the coated polymer membrane, wherein the porous polymer membrane has a porosity of 30 to 90%, a pore size of 0.05 to 5.0 microns and a thickness of 10 to 150 microns, and is selected from the group consisting of porous polytetrafluoro-ethylene membrane, polypropylene membrane, polyethylene membrane and polyvinylidene fluoride membrane, wherein the impregnating step is carried out in a method selected from the group consisting of a spraying, painting, tape casting, screen painting, dipping, calendering and doctor blade method at a temperature of 230 to 320 deg.C, wherein the method further comprises the steps of coating an electrolyte film on the surface of the manufactured composite electrolyte membrane and heating the electrolyte film coated composite electrolyte membrane in ultra pure water or vapor having a temperature of 80 to 150 deg.C for 1 or more hours, and wherein the electrolyte film is selected from the group consisting of perfluorosulfonyl fluoride and a polymer material in which an alkali metal ion such as sodium or potassium is substituted for perfluorosulfonic acid, perfluorocarboxylic acid, polystyrene sulfonic acid, polystyrene carboxylic acid or a mixture thereof, the coated film has a thickness of 1 to 50 microns, and the method for additionally coating the film is performed by a method selected from the group consisting of spraying, painting, tape casting, screen painting and dipping.
Abstract translation: 目的：提供一种高分子电解质膜燃料电池用复合高分子电解质膜的制造方法，通过以聚合物电解质树脂浸渍多孔膜的方式制造薄型的复合聚合物膜，其离子传导性和物理强度高 的全氟磺酰卤化合物。 构成：该方法包括用全氟磺酰卤化合物树脂浸渍惰性多孔聚合物膜的步骤; 并通过在涂覆的聚合物膜上依次处理高温碱性溶液，硫酸溶液和超纯水将浸渍的全氟磺酰卤化合物转化成硫酸，其中多孔聚合物膜的孔隙率为30-90％，孔径为0.05 至5.0微米，厚度为10至150微米，并且选自多孔聚四氟乙烯膜，聚丙烯膜，聚乙烯膜和聚偏二氟乙烯膜，其中浸渍步骤以选自以下的方法进行： 包括在230〜320℃的温度下进行喷涂，喷漆，胶带浇铸，丝网喷涂，浸渍，压延和刮刀法，其中所述方法还包括以下步骤：在制造的复合材料的表面上涂覆电解质膜 电解质膜并用超纯水或电解质膜加热电解质膜复合电解质膜 蒸汽，其温度为80〜150℃，持续1小时以上，其中，电解质膜选自全氟磺酰氟和其中碱金属离子如钠或钾代替全氟磺酸的聚合物材料 酸，全氟羧酸，聚苯乙烯磺酸，聚苯乙烯羧酸或其混合物，涂膜的厚度为1〜50微米，另外涂膜的方法是通过选自喷雾， 绘画，磁带铸造，丝网画和浸渍。
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公开(公告)号：KR1020010045679A
公开(公告)日：2001-06-05
申请号：KR1019990049046
申请日：1999-11-06
Applicant: 한국과학기술연구원
IPC: F28D20/00
CPC classification number: Y02E60/142
Abstract: PURPOSE: A thermal storage type cooling/heating system is provided, in which a thermal heating electric device and a thermal cooling electric device are incorporated into a single unit, to thereby reduce size, weight and installation cost of the system. CONSTITUTION: A system comprises a thermal storage(2) having thermal storage containers for cooling and heating operations, respectively, and a brine outlet port(13), a brine return port(12) and a refrigerant coil(11); a cooling unit(1) connected to the refrigerant coil and which cools the refrigerant circulating through the refrigerant coil; a brine circulation pump(3); a brine heater(4) for heating the brine flowing along the second circulation pipe; first and second brine circulation pipes(14,15); a bypass pipe(16) having both ends connected to the second circulation pipe so as to bypass the brine flowing along the second circulation pipe; a heat exchanger(5) installed at the bypass pipe; control valves(6,7,8); and a control unit(9). The first circulation pipe connects the brine output port of the thermal storage and the inlet port of the brine circulation pump, and the second circulation pipe connects the brine return port of the thermal storage and the outlet port of the brine circulation pump. The control unit controls the cooling unit, brine heater, brine circulation pipe, heat exchanger and the control valve in such a manner that the circulation pump, heater and cooling unit are selectively operated during the time where electric power consumption is low so as to store heat or cold heat into the thermal storage. Thus-stored heat or cold heat is used during the time where electric power consumption is high.
Abstract translation: 目的：提供一种热存储式冷却/加热系统，其中将热加热电气装置和热冷却电气装置并入单个单元中，从而减小系统的尺寸，重量和安装成本。 构成：系统包括分别具有用于冷却和加热操作的热存储容器的热存储器（2）和盐水出口（13），盐水返回端口（12）和制冷剂盘管（11）; 冷却单元（1），其连接到所述制冷剂线圈并且冷却通过所述制冷剂线圈循环的制冷剂; 盐水循环泵（3）; 用于加热沿着第二循环管流动的盐水的盐水加热器（4） 第一和第二盐水循环管（14,15）; 旁通管（16），其两端连接到第二循环管，以绕过沿着第二循环管流动的盐水; 安装在旁通管上的热交换器（5）; 控制阀（6,7,8）; 和控制单元（9）。 第一循环管连接储热器的盐水输出口和盐水循环泵的入口，第二循环管连接储热器的盐水返回口和盐水循环泵的出口。 控制单元以这样的方式控制冷却单元，盐水加热器，盐水循环管，热交换器和控制阀，使得循环泵，加热器和冷却单元在电力消耗低的时候选择性地运行，以便存储 热或冷热进入热存储。 在电力消耗高的时间内使用如此储存的热或冷热。
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公开(公告)号：KR1019930009901B1
公开(公告)日：1993-10-13
申请号：KR1019900005915
申请日：1990-04-26
Applicant: 한국과학기술연구원
IPC: C09K5/00
Abstract: The latent heat storage material has characteristically high water- absorptive polymer added to water. The water-absorptive polymer is one crosslinked compound selected from starch- polyacrylic acid salt system, carboxymethyl cellulose system, polyacrylic acid salt system, isobutylene-maleic acid copolymer, or polyethylene oxide system. The latent heat storage material of this invention can improve the heat efficiency by suppressing supercooling of water which occurs in the pure water and gives no phase separation. And the buffing effect of polymer of the heat storage material can prevent the volume increase when water changes into ice.
Abstract translation: 潜热储存材料具有特征性的高吸水性聚合物添加到水中。 吸水性聚合物是选自淀粉 - 聚丙烯酸盐体系，羧甲基纤维素体系，聚丙烯酸盐体系，异丁烯 - 马来酸共聚物或聚环氧乙烷体系的一种交联化合物。 本发明的潜热蓄热材料可以通过抑制在纯水中发生的水的过冷而不产生相分离来提高热效率。 蓄热材料的聚合物的抛光效果可以防止水变为冰时的体积增加。
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