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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：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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15.发明授权公开(公告)号：US11309560B2
公开(公告)日：2022-04-19
申请号：US16824898
申请日：2020-03-20
Applicant: HYUNDAI MOTOR COMPANY , KIA MOTORS CORPORATION , KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
Inventor： Hyun Bae Dong , Min Kyung Cho , Won Jung Kim , Ju Hae Jung , Jong Hyun Jang , Hyun Seo Park , Myung Su Lim , Jun Young Kim
IPC: G01R31/392 , H01M8/04664 , H01M8/1004 , G01R31/367 , H01M8/04537
Abstract: A method of predicting a life of a membrane electrode assembly (MEA) of a fuel cell for electric power generation includes: deriving an operating condition for accelerated degradation, which is applicable to the fuel cell; operating the fuel cell for a specific time under the derived operating condition for accelerated degradation and under a normal operating condition, and identifying the degree of degradation of the fuel cell under each of the operating conditions; calculating an acceleration multiple based on the degree of degradation identified under the operating condition for accelerated degradation and under the normal operating condition; and predicting the life of the membrane electrode assembly based on the acceleration multiple.
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Patent Agency Ranking
16.发明授权公开(公告)号：US11127967B2
公开(公告)日：2021-09-21
申请号：US16814619
申请日：2020-03-10
Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
Inventor： Hyun Seo Park , Ahyoun Lim , Ju Sung Lee , Hee-Young Park , So Young Lee , Jin Young Kim , Sung Jong Yoo , Dirk Henkensmeier , Jong Hyun Jang , Hyoung-Juhn Kim
IPC: H01M8/18 , H01M8/1004 , H01M8/1231 , H01M4/92 , H01M4/86 , H01M4/90 , H01M8/1018
Abstract: Disclosed is a high temperature-type unitized regenerative fuel cell using water vapor, which exhibits high hydrogen (H2) production efficiency and superior power generation ability.
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公开(公告)号：US10777834B2
公开(公告)日：2020-09-15
申请号：US15675233
申请日：2017-08-11
Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
Inventor： Sung Pil Yoon , Jonghee Han , Hyung Chul Ham , Chang Won Yoon , Sun-Hee Choi , Hyun Seo Park , Yeong Cheon Kim , Chang-Whan Lee , Hyoung-Juhn Kim , Tae Hoon Lim , Suk Woo Nam , Seong Cheol Jang
Abstract: Disclosed are a method for supplying molten carbonate fuel cell with electrolyte and a molten carbonate fuel cell using the same, wherein a molten carbonate electrolyte is generated from a molten carbonate electrolyte precursor compound in a molten carbonate fuel cell and is supplied to the molten carbonate fuel cell.
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公开(公告)号：US20190074523A1
公开(公告)日：2019-03-07
申请号：US15879237
申请日：2018-01-24
Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
Inventor： Jong Hyun Jang , Hee-Young Park , Hyoung-Juhn Kim , Dirk Henkensmeier , Sung Jong Yoo , Jin Young Kim , So Young Lee , Hyun Seo Park
IPC: H01M4/90
Abstract: An aryne-grafted carbon-supported catalyst and a method of preparing the same, and particularly to a carbon-supported catalyst having an organic anchor formed on the surface of a carbon support through aryne cycloaddition in order to improve the durability of a fuel cell catalyst, and a method of preparing the same. It is possible to form a covalent bonding selectively to a carbon support of a fuel cell catalyst in a solution by using 2-(trimethylsilyl)phenyl triflate or the like. In addition, the formed anchor prevents adhesion of metal catalyst particles of a fuel cell, and thus improves the durability of a fuel cell catalyst.
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公开(公告)号：US20180258544A1
公开(公告)日：2018-09-13
申请号：US15910270
申请日：2018-03-02
Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
Inventor： Sung Jong Yoo , Injoon Jang , So Young Lee , Jin Young Kim , Jong Hyun Jang , Hyoung-Juhn Kim , Jonghee Han , Hyun Seo Park
CPC classification number: C25B11/0447 , B01J35/0033 , C25B1/04 , Y02E60/366
Abstract: Provided are a cathode catalyst for water electrolysis devices and a method for preparing the same. More specifically, provided are a cathode catalyst for water electrolysis devices that exhibits both high activity and high electrical conductivity, compared to conventional transition metal phosphide catalysts, and a method for preparing the same.
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公开(公告)号：US20180254491A1
公开(公告)日：2018-09-06
申请号：US15910290
申请日：2018-03-02
Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
Inventor： Sung Jong Yoo , Dong Wook Lee , So Young Lee , Jin Young Kim , Jong Hyun Jang , Hyoung-Juhn Kim , Hyun Seo Park , Gil-Pyo Kim
IPC: H01M4/90 , H01M8/1018
CPC classification number: H01M4/9083 , H01M4/9041 , H01M4/926 , H01M8/1018 , H01M2008/1095
Abstract: A method for preparing a metal catalyst supported on a porous carbon support using a plant, including: (a) a step of preparing a plant; (b) a step of preparing a metal precursor-absorbed plant by absorbing a metal precursor into the plant; (c) a step of preparing a catalyst precursor by drying the metal precursor-absorbed plant; (d) a step of preparing a char by charring the catalyst precursor; and (e) a step of preparing a metal catalyst supported on a porous carbon support by treating the char with an acid. The method for preparing a metal catalyst supported on a porous carbon support of the present disclosure, whereby a plant itself is charred, is environment-friendly and allows for convenient large-scale synthesis. The metal catalyst supported on a porous carbon support prepared thereby can be used as electrode materials of various energy devices, particularly as an electrode catalyst of a fuel cell.
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