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41.发明授权Ceria-based composition including bismuth oxide, ceria-based composite electrolyte powder including bismuth oxide, method for sintering the same and sintered body made thereof 有权包含氧化铋的二氧化铈基组合物，包括氧化铋的氧化铈复合电解质粉末，其烧结方法和由其制成的烧结体公开(公告)号：US09252448B2
公开(公告)日：2016-02-02
申请号：US13929954
申请日：2013-06-28
Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
Inventor： Sung Pil Yoon , Jonghee Han , Shin Ae Song , Tae Hoon Lim , Hyoung-Juhn Kim , Jong Hyun Jang , Dirk Henkensmeier , Eun Ae Cho , Suk Woo Nam , Seong Ahn Hong , Thieu Cam-Anh
IPC: H01M8/12 , C04B35/50 , C04B35/626
CPC classification number: H01M8/126 , C04B35/50 , C04B35/62675 , C04B35/62685 , C04B2235/3224 , C04B2235/3225 , C04B2235/3227 , C04B2235/3229 , C04B2235/3244 , C04B2235/3298 , C04B2235/77 , C04B2235/85 , H01M8/1266 , H01M2300/0074 , H01M2300/0091 , Y02E60/521 , Y02E60/525 , Y02P70/56
Abstract: Provided are a ceria-based composition having an undoped or metal-doped ceria and an undoped or metal-doped bismuth oxide, wherein the undoped or metal-doped bismuth oxide is present in an amount equal to or more than about 10 wt % and less than about 50 wt % based on the total weight of the ceria-based composition, and at least one selected from the ceria and the bismuth oxide is metal-doped. The ceria-based composition may ensure high sintering density even at a temperature significantly lower than the known sintering temperature of about 1400° C., i.e., for example at a temperature of about 1000° C. or lower, and increase ion conductivity as well.
Abstract translation: 提供了一种具有未掺杂或金属掺杂的二氧化铈和未掺杂或金属掺杂的氧化铋的二氧化铈基组合物，其中未掺杂或金属掺杂的氧化铋以等于或大于约10重量％的量存在 相对于二氧化铈基组合物的总重量为约50重量％，并且选自二氧化铈和氧化铋中的至少一种是金属掺杂的。 即使在显着低于约1400℃的已知烧结温度的温度下，即例如在约1000℃或更低的温度下，二氧化铈基组合物也可确保高的烧结密度，并且还增加离子传导性 。
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42.发明授权公开(公告)号：US09214692B2
公开(公告)日：2015-12-15
申请号：US13761322
申请日：2013-02-07
Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
Inventor： Hyoung-Juhn Kim , Eun Ae Cho , Jong Hyun Jang , Dae Ki Choi , Chang Won Yoon , Suk-Woo Nam , Dirk Henkensmeier , Tae Hoon Lim
CPC classification number: H01M8/103 , C08G73/18 , C08G73/22 , C08L79/04 , H01M8/1048 , Y02E60/521 , Y02P70/56
Abstract: Provided is poly(benzimidazole-co-benzoxazole) having polybenzimidazole to which benzoxazole units are introduced, as a polymer electrolyte material. The polymer electrolyte material has both high proton conductivity and excellent mechanical properties even when it is obtained by in-situ phosphoric acid doping. The polymer electrolyte material may substitute for the conventional phosphoric acid-doped polybenzimidazole in a polymer electrolyte membrane fuel cell, particularly in a high-temperature polymer electrolyte membrane fuel cell.
Abstract translation: 提供具有导入苯并恶唑单元的聚苯并咪唑的聚（苯并咪唑 - 共苯并恶唑）作为聚合物电解质材料。 即使通过原位磷酸掺杂获得，聚合物电解质材料也具有高质子传导性和优异的机械性能。 聚合物电解质材料可以在聚合物电解质膜燃料电池中，特别是在高温聚合物电解质膜燃料电池中替代常规磷酸掺杂的聚苯并咪唑。
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公开(公告)号：US12227858B2
公开(公告)日：2025-02-18
申请号：US17589466
申请日：2022-01-31
Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
Inventor： Hyoung-Juhn Kim , Taekyung Lee , So Young Lee , Hee-Young Park , Bora Seo , Hyun Seo Park , Jong Hyun Jang , Tae Hoon Lim
Abstract: The present disclosure relates to a polybenzimidazole-based electrolyte membrane for alkaline water electrolysis, which includes a polybenzimidazole-based polymer, wherein the polybenzimidazole-based polymer is a biaxially oriented film. The polybenzimidazole-based electrolyte membrane for alkaline water electrolysis can reduce the concentration of an alkaline solution by improving the crystallinity of a polybenzimidazole-based polymer to increase the resistance against base, significantly improving the long-term stability of alkaline water electrolysis using a polybenzimidazole-based electrolyte membrane through the improved resistance against base, and by increasing the operation temperature to enhance the catalyst activity.
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公开(公告)号：US11670791B2
公开(公告)日：2023-06-06
申请号：US17097658
申请日：2020-11-13
Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
Inventor： Hyoung-Juhn Kim , Jieun Choi , So Young Lee , Hee-Young Park , Sung Jong Yoo , Hyun Seo Park , Jing Young Kim , Jong Hyun Jang , Bora Seo
IPC: H01M8/1032 , C08G65/40 , H01M8/1027 , H01M8/1004 , H01M8/10
CPC classification number: H01M8/1032 , C08G65/40 , H01M8/1004 , H01M8/1027 , H01M2008/1095 , H01M2300/0082
Abstract: The present disclosure relates to a polyarylene ether-based polymer for an electrolyte membrane of a fuel cell, represented by the following Chemical Formula 1. When the polyarylene ether-based polymer for an electrolyte membrane of a fuel cell is applied to the manufacture of a membrane-electrode assembly through a decal process, the hot pressing temperature may be controlled to about 120° C. so as to conform to a low glass transition temperature. Therefore, it is possible to solve the problems of deterioration of an electrolyte membrane or incomplete transfer of an electrode catalyst layer, caused by the high hot pressing temperature applied in the case of the conventional hydrocarbon-based polymer material.
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公开(公告)号：US11289711B2
公开(公告)日：2022-03-29
申请号：US16934893
申请日：2020-07-21
Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
Inventor： Jong Hyun Jang , Hyun Seo Park , Hee-Young Park , Katie Heeyum Lim , Oh Sub Kim , Hyoung-Juhn Kim , Jin Young Kim , Sung Jong Yoo , Dirk Henkensmeir , So Young Lee
Abstract: Disclosed are a catalyst electrode for a fuel cell, a method for fabricating the catalyst electrode, and a fuel cell including the catalyst electrode. The presence of an ionomer-ionomer support composite in the catalyst electrode prevents the porous structure of the catalyst electrode from collapsing due to oxidation of a carbon support to avoid an increase in resistance to gas diffusion and can stably secure proton channels. The presence of carbon materials with high conductivity is effective in preventing the electrical conductivity of the electrode from deterioration resulting from the use of a metal oxide in the ionomer-ionomer support composite and is also effective in suppressing collapse of the porous structure of the electrode to prevent an increase in resistance to gas diffusion in the electrode. Based on these effects, the fuel cell exhibits excellent performance characteristics and prevents its performance from deteriorating during continuous operation.
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Patent Agency Ranking
公开(公告)号：US11173481B2
公开(公告)日：2021-11-16
申请号：US16534216
申请日：2019-08-07
Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY , GLOBAL FRONTIER CENTER FOR MULTISCALE ENERGY SYSTEMS
Inventor： Sung Jong Yoo , Injoon Jang , Hee-Young Park , So Young Lee , Hyun Seo Park , Jin Young Kim , Jong Hyun Jang , Hyoung-Juhn Kim
Abstract: Disclosed are a metal single-atom catalyst and a method for preparing the same. The method uses a minimal amount of chemicals and is thus environmentally friendly compared to conventional chemical and/or physical methods. In addition, the method enables the preparation of a single-atom catalyst in a simple and economical manner without the need for further treatment such as acid treatment or heat treatment. Furthermore, the method is universally applicable to the preparation of single-atom catalysts irrespective of the kinds of metals and supports, unlike conventional methods that suffer from very limited choices of metal materials and supports. Therefore, the method can be widely utilized to prepare various types of metal single-atom catalysts. All metal atoms in the metal single-atom catalyst can participate in catalytic reactions. This optimal atom utilization achieves maximum reactivity per unit mass and can minimize the amount of the metal used, which is very economical.
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公开(公告)号：US10854886B2
公开(公告)日：2020-12-01
申请号：US16268856
申请日：2019-02-06
Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
Inventor： Jong Hyun Jang , Hee-Young Park , Jea-woo Jung , Hyoung-Juhn Kim , Dirk Henkensmeier , Sung Jong Yoo , Jin Young Kim , So Young Lee , Hyun Seo Park
IPC: H01M4/92
Abstract: A method for preparing a carbon-supported, platinum-cobalt alloy, nanoparticle catalyst includes mixing a solution containing, in combination, a platinum precursor, a transition metal precursor consisting of a transition metal that is cobalt, carbon, a stabilizer that is oleyl amine, and a reducing agent that is sodium borohydride to provide carbon-supported, platinum-cobalt alloy nanoparticles, and washing the carbon-supported, platinum-cobalt alloy, nanoparticles using ethanol and distilled water individually or in combination followed by drying at room temperature to obtain dried carbon-supported, platinum-cobalt alloy, nanoparticles; treating the dried carbon-supported, platinum-cobalt alloy, nanoparticles with an acetic acid solution having a concentration ranging from 1-16M to provide acetic acid-treated nanoparticles, and washing the acetic acid-treated nanoparticles using distilled water followed by drying at room temperature to obtain dried acetic acid-treated nanoparticles; and heat treating the dried acetic acid-treated nanoparticles at a temperature ranging from 600 to 1000° C. under a hydrogen-containing atmosphere.
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公开(公告)号：US10669640B2
公开(公告)日：2020-06-02
申请号：US15241798
申请日：2016-08-19
Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
Inventor： Jong Hyun Jang , Soo-Kil Kim , Sang Hyun Ahn , Hyoung-Juhn Kim , Jin Young Kim , Sung Jong Yoo , Dirk Henkensmeier , Jonghee Han , Jaeyune Ryu
Abstract: Provided is an electrocatalyst for anion exchange membrane water electrolysis, including a carbonaceous material, and nickel electrodeposited on the carbonaceous material, wherein nickel is partially substituted with platinum and the substitution with platinum provides increased hydrogen evolution activity as compared to the same electrocatalyst before substitution with platinum. Also provided are a method for preparing the electrocatalyst and an anion exchange membrane water electrolyzer using the same. The nickel electrocatalyst coated with an ultralow loading amount of platinum for anion exchange membrane water electrolysis shows excellent hydrogen evolution activity and has a small thickness of catalyst, thereby providing high mass transfer and high catalyst availability. In addition, the electrocatalyst uses a particle-type electrode to facilitate emission of hydrogen bubbles generated during hydrogen evolution reaction and oxygen bubbles generated during oxygen evolution reaction, and requires low cost for preparation to provide high cost-efficiency.
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公开(公告)号：US10601052B2
公开(公告)日：2020-03-24
申请号：US15360034
申请日：2016-11-23
Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
Inventor： Jong Hyun Jang , Byungseok Lee , Hee-Young Park , Hyoung-Juhn Kim , Dirk Henkensmeier , Sung Jong Yoo , Jin Young Kim , So Young Lee , Jaeyune Ryu , Sung Pil Yoon , Jonghee Han , Suk Woo Nam
Abstract: Disclosed are a reversible fuel cell oxygen electrode in which IrO2 is electrodeposited and formed on a porous carbon material and platinum is applied thereon to form a porous platinum layer, a reversible fuel cell including the same, and a method for preparing the same. According to the corresponding reversible fuel cell oxygen electrode, as the loading amounts of IrO2 and platinum used in the reversible fuel cell oxygen electrode can be lowered, it is possible to exhibit excellent reversible fuel cell performances (excellent fuel cell performance and water electrolysis performance) by improving the mass transport of water and oxygen while being capable of reducing the loading amounts of IrO2 and platinum. Further, it is possible to exhibit a good activity of a catalyst when the present disclosure is applied to a reversible fuel cell oxygen electrode and to reduce corrosion of carbon.
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公开(公告)号：US20200086302A1
公开(公告)日：2020-03-19
申请号：US16216287
申请日：2018-12-11
Applicant: Korea Institute of Science and Technology
Inventor： Hyun Seo Park , Kahyun Hur , Min-Soek Kim , Jimin Kong , Jong Hyun Jang , Chang Won Yoon , Hyung Chul Ham , Suk Woo Nam , Jonghee Han , Ara Jo
Abstract: The present disclosure relates to a catalyst for electrochemical ammonia synthesis and a method for producing the same. The catalyst has an ammonia synthesis activity up to several times to several tens of times of the activity of the existing single metal or metal oxide catalysts. Thus, when using the catalyst, it is possible to provide a method for electrochemical ammonia synthesis having an improved ammonia production yield and rate.
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