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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：US10723456B2
公开(公告)日：2020-07-28
申请号：US15375590
申请日：2016-12-12
发明人： Taikjin Lee , Suk Woo Nam , Chang Won Yoon , Hyun Seo Park , Young Min Jhon , Seok Lee , Min-Jun Choi
摘要： The present invention relates to an unmanned aerial vehicle system having a multi-rotor type rotary wing. The unmanned aerial vehicle system having a multi-rotor type rotary wing includes a first unmanned aerial vehicle, at least one second unmanned aerial vehicle, and a bridge that connects the first unmanned aerial vehicle and the at least one second unmanned aerial vehicle to be separable from each other, wherein the at least one second unmanned aerial vehicle is moveable by the first unmanned aerial vehicle in a state where the at least one second unmanned aerial vehicle is coupled to the first unmanned aerial vehicle by the bridge without being driven, and the at least one second unmanned aerial vehicle is separable from the first unmanned aerial vehicle which is in flight.
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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：US10186712B2
公开(公告)日：2019-01-22
申请号：US15790051
申请日：2017-10-23
发明人： Hyung Chul Ham , Jinwon Cho , Hyun Seo Park , Jong Hyun Jang , Sung Jong Yoo , Chang Won Yoon , Hyoung-Juhn Kim , Sung Pil Yoon , Jonghee Han , Suk Woo Nam
IPC分类号： H01M4/92 , H01M12/06 , C22C38/04 , B01J25/00 , B01J23/62 , B01J23/644 , C22C5/04 , H01M4/86 , H01M8/1018
摘要： Provided is a catalyst for an oxygen reduction reaction, including an alloy in which two metals are mixed, in which the corresponding alloy is an alloy of iridium (Ir); and silicon (Si), phosphorus (P), germanium (Ge), or arsenic (As). The corresponding catalyst for the oxygen reduction reaction may have excellent price competitiveness while exhibiting a catalytic activity which is equal to or similar to that of an existing Pt catalyst. Accordingly, when the catalyst is used, the amount of platinum catalyst having low price competitiveness may be reduced, so that a production unit cost of a system to which the corresponding catalyst is applied may be lowered.
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公开(公告)号：US11695147B2
公开(公告)日：2023-07-04
申请号：US17013918
申请日：2020-09-08
发明人： So Young Lee , Seung Ju Lee , Hyun Seo Park , Jin Young Kim , Sung Jong Yoo , Jong Hyun Jang , Hyoung-Juhn Kim , Hee-Young Park
IPC分类号： H01M8/1051 , H01M8/1039 , C08K3/32 , C08K7/08 , C08F14/18 , H01M8/10
CPC分类号： H01M8/1051 , C08F14/185 , C08K3/32 , C08K7/08 , H01M8/1039 , C08K2003/328 , C08K2201/003 , C08K2201/011 , H01M2008/1095 , H01M2300/0082
摘要： Disclosed is an antioxidant for a polymer electrolyte membrane of a fuel cell including cerium hydrogen phosphate (CeHPO4). The presence of cerium hydrogen phosphate in the antioxidant enhances the dissolution stability of cerium and improves the ability to capture water, leading to an increase in proton conductivity. In addition, the cerium hydrogen phosphate has a crystal structure composed of smaller cerium particles. This crystal structure greatly improves the ability of the antioxidant to prevent oxidation of the electrolyte membrane. Also disclosed are an electrolyte membrane including the antioxidant, a fuel cell including the electrolyte membrane, a method for preparing the antioxidant, a method for producing the electrolyte membrane, and a method for fabricating the fuel cell.
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公开(公告)号：US11430996B2
公开(公告)日：2022-08-30
申请号：US16802206
申请日：2020-02-26
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： A method is disclosed for preparing a metal single-atom catalyst for a fuel cell including the steps of depositing metal single atoms to a nitrogen precursor powder, mixing the metal single atom-deposited nitrogen precursor powder with a carbonaceous support, and carrying out heat treatment. The step of depositing metal single atoms is carried out by sputtering, thermal evaporation, E-beam evaporation or atomic layer deposition. The method uses a relatively lower amount of chemical substances as compared to conventional methods, is eco-friendly, and can produce a single-atom catalyst at low cost. In addition, unlike conventional methods which are limited to certain metallic materials, the present method can be applied regardless of the type of metal.
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公开(公告)号：US10975476B2
公开(公告)日：2021-04-13
申请号：US16198286
申请日：2018-11-21
发明人： Jong Hyun Jang , Seunghoe Choe , Youngseung Na , Hye Jin Lee , Ahyoun Lim , Hyoung-Juhn Kim , Dirk Henkensmeier , Sung Jong Yoo , Jin Young Kim , So Young Lee , Hyun Seo Park
IPC分类号： C25B1/04 , C25D9/06 , C25B9/23 , C25B11/031 , C25B11/075 , C25B11/063 , C25B11/052 , C25D9/04
摘要： The present disclosure relates to an IrO2 electrodeposited porous titanium composite layer of a polymer electrolyte membrane water electrolysis apparatus serving as both a diffusion layer and an oxygen electrode, the apparatus including: a porous titanium (Ti) layer; and an electrodeposited iridium oxide (IrO2) layer on the porous Ti layer. The IrO2 layer may be uniformly deposited on a porous Ti layer through an electrolysis process, and the electrodeposited IrO2 layer may play multiple roles as not only a catalyst layer toward oxygen evolution reaction (OER) on the surface of the Ti layer, but also a corrosion-protection layer which prevents an inner Ti layer from corrosion.
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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
申请人： KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY , GLOBAL FRONTIER CENTER FOR MULTISCALE ENERGY SYSTEMS
发明人： Sung Jong Yoo , Injoon Jang , So Young Lee , Hyun Seo Park , Jin Young Kim , Jong Hyun Jang , Hyoung-Juhn Kim
摘要： 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
申请人： KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY , INDUSTRIAL COOPERATION FOUNDATION CHONBUK NATIONAL UNIVERSITY , GLOBAL FRONTIER CENTER FOR MULTISCALE ENERGY SYSTEMS
发明人： 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
摘要： 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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公开(公告)号：US10483552B2
公开(公告)日：2019-11-19
申请号：US15910304
申请日：2018-03-02
发明人： Sung Jong Yoo , Jue-hyuk Jang , So Young Lee , Jin Young Kim , Jong Hyun Jang , Hyoung-Juhn Kim , Namgee Jung , Hyun Seo Park
摘要： 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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