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公开(公告)号：US10850270B2
公开(公告)日：2020-12-01
申请号：US16177203
申请日：2018-10-31
Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY , GLOBAL FRONTIER CENTER FOR MULTISCALE ENERGY SYSTEMS
Inventor： Sung Jong Yoo , Injoon Jang , So Young Lee , Hyun Seo Park , Jin Young Kim , Jong Hyun Jang , Hyoung-Juhn Kim
Abstract: Disclosed is a method for preparing a carbon-supported metal oxide and/or alloy nanoparticle catalyst. According to the method, a carbon-supported metal oxide and/or alloy nanoparticle catalyst is prepared by depositing metal oxide and/or alloy nanoparticles on a water-soluble support and dissolving the metal oxide and/or alloy nanoparticles deposited on the water-soluble support in an anhydrous polar solvent containing carbon dispersed therein to support the metal oxide and/or alloy nanoparticles on the carbon. The anhydrous polar solvent has much lower solubility for the water-soluble support than water and is used to dissolve the water-soluble support. The use of the anhydrous polar solvent instead of water can prevent the water-soluble support present at a low concentration in the solution from impeding the support of the nanoparticles on the carbon, thus providing a solution to the problems of environmental pollution, high cost, and complexity encountered in conventional chemical and physical synthetic methods.
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公开(公告)号：US20200283307A1
公开(公告)日：2020-09-10
申请号：US16534294
申请日：2019-08-07
Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY , INDUSTRIAL COOPERATION FOUNDATION CHONBUK NATIONAL UNIVERSITY , GLOBAL FRONTIER CENTER FOR MULTISCALE ENERGY SYSTEMS
Inventor： Sung Jong YOO , Sehyun Lee , Hee-Young Park , So Young Lee , Hyun Seo Park , Jin Young Kim , Jong Hyun Jang , Hyoung-Juhn Kim , Pil Kim , Jae Young Jung , Yeonsun Sohn
Abstract: Disclosed are a perovskite compound, a method for producing the perovskite compound, a catalyst for a fuel cell including the perovskite compound, and a method for producing the catalyst. The perovskite compound overcomes the low stability of palladium due to its perovskite structural properties. Therefore, the perovskite compound can be used as a catalyst material for a fuel cell. In addition, the use of palladium in the catalyst instead of expensive platinum leads to an improvement in the price competitiveness of fuel cells. The catalyst is highly durable and catalytically active due to its perovskite structure.
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23.发明授权公开(公告)号：US10601075B2
公开(公告)日：2020-03-24
申请号：US14718170
申请日：2015-05-21
Inventor： Hyoung-Juhn Kim , Jong Hyub Park , Jin Ho Kim , So Young Lee
IPC: C08G75/23 , C08G75/20 , H01M10/0565
Abstract: As a polymerization solvent for use in the polymerization of monomers for a hydrocarbon-based electrolyte polymer, a mixed solvent containing a first solvent, such as dimethyl acetamide, N-methylpyrrolidone or dimethyl sulfoxide, and an alcohol as a second solvent is used instead of a dimethyl acetamide/toluene mixture or dimethyl acetamide alone according to the related art. By using the mixed solvent, it is possible to obtain a molecular weight of polymer equal to or higher than the molecular weight of polymer obtained from the method according to the related art, even when the reaction time is reduced. Therefore, the disclosed method and polymerization solvent is very useful for a mass production of a hydrocarbon-based electrolyte polymer.
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公开(公告)号：US10483552B2
公开(公告)日：2019-11-19
申请号：US15910304
申请日：2018-03-02
Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
Inventor： Sung Jong Yoo , Jue-hyuk Jang , So Young Lee , Jin Young Kim , Jong Hyun Jang , Hyoung-Juhn Kim , Namgee Jung , Hyun Seo Park
Abstract: A catalyst containing a carbon support and a core-shell nanoparticle supported on the carbon support, wherein a core of the core-shell nanoparticle is cobalt metal not containing a heterogeneous element and the shell contains carbon. The catalyst for an oxygen reduction reaction of the present disclosure is a catalyst in which the cobalt core-carbon shell nanoparticle is supported on the carbon support through ligand stabilization and heat treatment. The catalyst can be synthesized to have high dispersibility. In particular, it can be used as an electrode catalyst of a cathode to improve the oxygen reduction activity and durability of a fuel cell operating under an alkaline atmosphere.
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25.发明授权公开(公告)号：US10396384B2
公开(公告)日：2019-08-27
申请号：US15719557
申请日：2017-09-29
Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
Inventor： Jin Young Kim , Sunhee Jo , So Young Lee , Sung Jong Yoo , Jong Hyun Jang , Hyoung-Juhn Kim , Jonghee Han , Suk Woo Nam , Tae Hoon Lim
IPC: H01M8/106 , H01M8/1039 , H01M8/1069 , H01M8/1053 , H01M8/1018
Abstract: Provided is a composite polymer electrolyte membrane for a fuel cell, including: a porous fluorinated polymer support; and a perfluorinated sulfonic acid polymer resin membrane which fills the inside of pores of the porous fluorinated polymer support and covers an external surface of the porous fluorinated polymer support.
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Patent Agency Ranking
公开(公告)号：US11936052B2
公开(公告)日：2024-03-19
申请号：US16850750
申请日：2020-04-16
Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
Inventor： Jin Young Kim , Jong Min Kim , Hee-Young Park , So Young Lee , Hyun Seo Park , Sung Jong Yoo , Jong Hyun Jang , Hyoung-Juhn Kim , Chang Won Yoon , Jonghee Han
CPC classification number: H01M4/925 , C01G19/02 , D01F9/08 , H01M4/8673 , C01P2002/54 , C01P2004/13 , D01D5/0007
Abstract: Provided is a fluorine-doped tin oxide support, a platinum catalyst for a fuel cell having the same, and a method for producing the same. Also described is a high electrical conductivity and electrochemical durability by doping fluorine to the tin oxide-based support through an electrospinning process. Thus, while resolving a degradation issue of the carbon support in the conventional commercially available platinum/carbon (Pt/C) catalyst, what is designed is to minimize an electrochemical elution of dopant or tin, which is a limitation of the tin oxide support itself and has excellent performance as a catalyst for a fuel cell.
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公开(公告)号：US11799093B2
公开(公告)日：2023-10-24
申请号：US17677723
申请日：2022-02-22
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
CPC classification number: H01M4/926 , H01M4/8652 , H01M4/8828 , H01M4/8892 , H01M4/9016
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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公开(公告)号：US11649551B2
公开(公告)日：2023-05-16
申请号：US17038331
申请日：2020-09-30
Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
Inventor： So Young Lee , Hyoung-Juhn Kim , Sae Yane Baek , Taekyung Lee , Sung Jong Yoo , Jong Hyun Jang , Hee-Young Park , Jin Young Kim , Hyun S. Park
CPC classification number: C25B9/23 , B01D67/0011 , B01D67/0013 , B01D71/06 , C25B1/04 , C25B9/73 , C25B11/04 , C25B13/02 , C25B13/08 , B01D2325/023 , B01D2325/42
Abstract: The present disclosure discloses an asymmetric electrolyte membrane, a membrane electrode assembly including the same, a water electrolysis apparatus including the same and a method for manufacturing the same. More particularly, it discloses an asymmetric electrolyte membrane having a porous layer and a dense layer at the same time, a membrane electrode assembly including the same, a water electrolysis apparatus including the same and a method for manufacturing the same.
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公开(公告)号：US11569523B2
公开(公告)日：2023-01-31
申请号：US16859712
申请日：2020-04-27
Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
Inventor： So Young Lee , Seung Ju Lee , Min Jae Lee , Hyun Seo Park , Jong Hyun Jang , Hyoung-Juhn Kim , Suk Woo Nam , Young Suk Jo , Yeong Cheon Kim
IPC: H01M8/1051 , H01M8/103 , H01M8/1072 , H01M8/1081 , H01M8/1048 , H01M8/1088 , H01M8/1011 , H01M8/10 , H01M8/1009
Abstract: The present disclosure relates to a polymer electrolyte membrane for medium and high temperature, a preparation method thereof and a high-temperature polymer electrolyte membrane fuel cell including the same, more particularly to a technology of preparing a composite membrane including an inorganic phosphate nanofiber incorporated into a phosphoric acid-doped polybenzimidazole (PBI) polymer membrane by adding an inorganic precursor capable of forming a nanofiber in a phosphoric acid solution when preparing phosphoric acid-doped polybenzimidazole and using the same as a high-temperature polymer electrolyte membrane which is thermally stable even at high temperatures of 200-300° C. without degradation of phosphoric acid and has high ion conductivity.
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公开(公告)号：US11326264B2
公开(公告)日：2022-05-10
申请号：US16122640
申请日：2018-09-05
Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
Inventor： Jong Hyun Jang , Seunghoe Choe , Youngseung Na , Hye Jin Lee , Hyoung-Juhn Kim , Dirk Henkensmeier , Sung Jong Yoo , Jin Young Kim , So Young Lee , Hyun Seo Park
IPC: C25B11/051 , C25B1/04 , C25B9/19 , C25B9/23 , C25B9/73 , C25B11/069
Abstract: Provided is a membrane electrode assembly for a proton exchange membrane water electrolyzer, including: an oxygen electrode including an iridium oxide (IrO2) layer which is an electrodeposited oxygen electrode catalyst layer on a titanium (Ti) layer which is a diffusion layer; a hydrogen electrode in which a hydrogen electrode catalyst layer is formed on a diffusion layer; and an electrolyte membrane placed between the oxygen electrode catalyst layer and the hydrogen electrode catalyst layer, in which a portion of the pores of the Ti diffusion layer are filled with an electrolyte of the electrolyte membrane.
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