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21.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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公开(公告)号：US10144993B2
公开(公告)日：2018-12-04
申请号：US14918486
申请日：2015-10-20
Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
Inventor： Sung Jong Yoo , Jong Hyun Jang , Hyoung-Juhn Kim , Namgee Jung , Suk Woo Nam , Jonghee Han , Sung Pil Yoon , Jaeyune Ryu , Tae Hoon Lim , Jin Young Kim
IPC: C22C5/04
Abstract: Provided is a catalyst for oxygen reduction reaction comprising an alloy comprising at least one selected from Pt, Pd and Ir supported on a carbon carrier functionalized with poly(N-isopropylacrylamide) (PNIPAM). The catalyst for oxygen reduction reaction has electronic ensemble effects by virtue of the carbon carrier functionalized with poly(N-isopropylacrylamide) (PNIPAM), and thus shows improved oxygen reduction activity and durability as compared to conventional catalysts supported on carbon.
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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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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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Patent Agency Ranking
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：US10396383B2
公开(公告)日：2019-08-27
申请号：US15679562
申请日：2017-08-17
Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
Inventor： Hyoung-Juhn Kim , So Young Lee , Jieon Chae , Jong Hyun Jang , Sung Jong Yoo , Jin Young Kim , Hyun Seo Park , Dirk Henkensmeier
IPC: H01M8/1004 , H01M8/1016 , H01M8/04089 , H01M8/04291
Abstract: A membrane electrode assembly includes a cation exchange membrane electrode assembly and an anion exchange membrane electrode assembly. The cation exchange membrane includes a cation exchange membrane, a first cathode electrode disposed on the cation exchange membrane, and a first anode electrode disposed under the cation exchange membrane. The anion exchange membrane electrode assembly includes an anion exchange membrane, a second cathode electrode disposed on the anion exchange membrane, and a second anode electrode disposed under the anion exchange membrane. The cation exchange membrane and the anion exchange membrane partially contact each other, and the first cathode electrode, the first anode electrode, the second cathode electrode, and the second anode electrode do not contact one another.
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公开(公告)号：US10367206B2
公开(公告)日：2019-07-30
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 , H01M4/92
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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