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公开(公告)号：US11799089B2
公开(公告)日：2023-10-24
申请号：US17571662
申请日：2022-01-10
发明人： So Young Lee , Seung Ju Lee , Jin Hyeon Choi , Jeawoo Jung , Hyoung-Juhn Kim , Sung Jong Yoo , Hee-Young Park , Bora Seo , Jin Young Kim , Jong Hyun Jang
IPC分类号： H01M4/86 , H01M8/1004 , H01M4/90 , H01M4/92 , H01M8/1018 , H01M8/10
CPC分类号： H01M4/8663 , H01M4/8605 , H01M4/9041 , H01M4/9083 , H01M4/926 , H01M8/1004 , H01M8/1018 , H01M2008/1095 , H01M2300/0082
摘要： The present disclosure relates to antioxidant for a polymer electrolyte membrane fuel cell electrode catalyst, which includes cerium hydrogen phosphate (HCe2(PO4)3(H2O)) in the form of a nanofiber, and an electrode and a membrane-electrode assembly including the same. The electrode for a polymer electrolyte membrane fuel cell of the present disclosure, wherein the antioxidant is dispersed, can improve the mechanical strength of an electrode catalyst layer and can minimize deterioration of chemical durability even after long-term operation. And, a fuel cell including the same can exhibit high output performance and can operate stably even after long-term operation.
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公开(公告)号：US11342565B2
公开(公告)日：2022-05-24
申请号：US16841371
申请日：2020-04-06
发明人： Hee-Young Park , Jong Hyun Jang , Hyean-Yeol Park , Jea-Woo Jung , Katie Heeyum Lim , Hyoung-Juhn Kim , Dirk Henkensmeir , Sung Jong Yoo , Jin Young Kim , Hyun Seo Park , So Young Lee
IPC分类号： H01M4/92 , H01M8/1004 , H01M4/88
摘要： The present disclosure relates to a fuel cell catalyst and a manufacturing method thereof. The fuel cell catalyst can be used to manufacture a membrane electrode assembly having a catalyst layer of high density and high dispersion by solving the problem of aggregation of catalyst particles occurring during the formation of the catalyst layer, by using a catalyst including a polydopamine-coated support. In addition, the method for manufacturing the fuel cell catalyst does not require a solvent because the catalyst including the polydopamine-coated support, wherein from 0.1 to 1% of the hydroxy groups contained in catechol groups of the polydopamine are replaced by halide atoms, in solid phase are simply heat-treated by solid-to-solid dry synthesis which allows manufacturing of a fuel cell catalyst in a short time by eliminating the need for a washing process using a solvent and an extraction process for sampling after the synthesis.
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公开(公告)号：US10461350B2
公开(公告)日：2019-10-29
申请号：US15686689
申请日：2017-08-25
发明人： Jong Hyun Jang , Hyoung-Juhn Kim , Sung Jong Yoo , Jin Young Kim , Hyung Chul Ham , Dirk Henkensmeier , So Young Lee , Hyun Seo Park , Youngseung Na , Min Gwan Ha
IPC分类号： C25B3/04 , C25B13/08 , C25B11/04 , C25B9/08 , H01M8/1018 , H01M8/00 , H01M8/0276
摘要： Disclosed is an electrochemical reaction cell enhancing a reduction reaction. The electrochemical reaction cell enhancing a reduction reaction comprises: a membrane electrode assembly including a polymer electrolytic membrane, a cathode formed by sequentially stacking a first gas diffusion layer and a first catalyst layer on one surface of the electrolytic membrane, and an anode formed by sequentially stacking a second catalyst layer and a second gas diffusion layer on the other surface of the electrolytic membrane; a first distribution plate stacked on the first catalyst layer to supply a reaction gas and a cathode electrolytic solution dissolved with the reaction gas to the first catalyst layer along separate channels; and a second distribution plate stacked on the second gas diffusion layer to supply an anode electrolytic solution to the second gas diffusion layer.
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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
发明人： 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分类号： H01M8/1032 , C08G65/40 , H01M8/1027 , H01M8/1004 , H01M8/10
CPC分类号： H01M8/1032 , C08G65/40 , H01M8/1004 , H01M8/1027 , H01M2008/1095 , H01M2300/0082
摘要： 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
发明人： 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
摘要： 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
申请人： KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY , GLOBAL FRONTIER CENTER FOR MULTISCALE ENERGY SYSTEMS
发明人： Sung Jong Yoo , Injoon Jang , Hee-Young Park , So Young Lee , Hyun Seo Park , Jin Young Kim , Jong Hyun Jang , Hyoung-Juhn Kim
摘要： 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
发明人： 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分类号： H01M4/92
摘要： 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：US10601052B2
公开(公告)日：2020-03-24
申请号：US15360034
申请日：2016-11-23
发明人： 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
摘要： 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
发明人： Hyoung-Juhn Kim , So Young Lee , Jieon Chae , Jong Hyun Jang , Sung Jong Yoo , Jin Young Kim , Hyun Seo Park , Dirk Henkensmeier
IPC分类号： H01M8/1004 , H01M8/1016 , H01M8/04089 , H01M8/04291
摘要： 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
发明人： 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分类号： H01M4/90 , H01M8/1018 , H01M4/92
摘要： 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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