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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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公开(公告)号：US10305131B2
公开(公告)日：2019-05-28
申请号：US15200060
申请日：2016-07-01
Inventor： Hyoung-Juhn Kim , Jong Hyun Jang , So Young Lee , Bohyun Kim , Sun-Hee Choi , Jonghee Han , Jin Ho Kim , Jong Hyub Park
IPC: H01M8/1027 , H01M8/1044 , H01M8/1081 , C08J5/22 , H01M8/1004 , H01M8/1018
Abstract: Disclosed is an electrolyte membrane for a fuel cell including a polymer blend of a sulfonated polyethersulfone copolymer, hydroxyl group-containing polyethersulfone copolymer and a hydroxyl group-containing sulfonated polyethersulfone copolymer.
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Patent Agency Ranking
公开(公告)号：US20180202970A1
公开(公告)日：2018-07-19
申请号：US15861998
申请日：2018-01-04
Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
Inventor： So Young LEE , Hyoung-Juhn Kim , Young Seung Na , Jin Young Kim , Sung Jong Yoo , Jong Hyun Jang , Jonghee Han , Suk Woo Nam
Abstract: An ionic conductivity measurement device of an electrolytic membrane includes a humidification chamber configured to accommodate an ion-conductive electrolytic membrane and having concave grooves respectively formed at both sides thereof which face the electrolytic membrane to form a measurement space for measuring ionic conductivity of the electrolytic membrane; a plurality of channels formed at a bottom surface of each of the concave grooves; a gas distribution unit detachably coupled to each of the concave grooves with the electrolytic membrane being interposed therebetween; and a plurality of electrodes provided in contact with one side of the electrolytic membrane and supported by the gas distribution unit, the plurality of electrodes being disposed side by side to measure an impedance of the electrolytic membrane.
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57.发明授权公开(公告)号：US09793552B2
公开(公告)日：2017-10-17
申请号：US14193083
申请日：2014-02-28
Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
Inventor： Jong Hyun Jang , Yung-Eun Sung , Hee-young Park , Hyoung-Juhn Kim , Dirk Henkensmeier , Suk Woo Nam , Hyung Chul Ham , Tae-Hoon Lim , Sung Jong Yoo , Eun Ae Cho , Kug-Seung Lee
Abstract: The present disclosure relates to a PtAu nanoparticle catalyst heat-treated in the presence of carbon monoxide (CO) and a method for preparing same. Since the PtxAuy nanoparticle catalyst heat-treated under CO atmosphere has high Pt surface area and superior oxygen reduction reaction (ORR) activity, a high-efficiency, high-quality fuel cell can be achieved by applying the catalyst to a fuel cell.
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公开(公告)号：US09751078B2
公开(公告)日：2017-09-05
申请号：US14921567
申请日：2015-10-23
Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
Inventor： Sung Jong Yoo , Jaeyune Ryu , Jong Hyun Jang , Jin Young Kim , Hyoung-Juhn Kim , Sung Pil Yoon , Jonghee Han , Suk Woo Nam , Tae Hoon Lim
CPC classification number: B01J27/1853 , B01J23/75 , B01J35/06 , B82Y30/00 , C25B1/02 , C25B11/035 , C25B11/0405 , C25B11/0415 , C25B11/0447
Abstract: Disclosed is a non-precious metal based water electrolysis catalyst represented by CoX/C (X is at least one selected from the group consisting of P, O, B, S and N) for evolution of hydrogen and oxygen at a cathode and anode, respectively, at the same time, the catalyst including a cobalt-containing compound fixed to a carbon carrier.
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59.发明授权Apparatus and method for generating wave functional pulsatile microflows by applying Fourier cosine series and hydraulic head difference 有权通过应用傅里叶余弦系列和液压头差产生波功能脉冲微流的装置和方法公开(公告)号：US09291172B2
公开(公告)日：2016-03-22
申请号：US14090781
申请日：2013-11-26
Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
Inventor： Myung-Suk Chun , Kwang Seok Kim , Hyoung-Juhn Kim , Young Tae Byun
CPC classification number: F04F7/00 , F04D11/00 , Y10T137/0318 , Y10T137/85978
Abstract: An apparatus for generating pulsatile flows includes a liquid vessel capable of containing a liquid, a plurality of revolving mechanisms associated with each other, and a microchannel supplied with a liquid from the liquid vessel. As the plurality of revolving mechanisms rotate, a periodically changing pressure difference occurs between the liquid vessel and the microchannel, thereby implementing a pulsatile flow having a wave functional form in the microchannel. By applying the hydraulic head difference and controlling revolution of the revolving mechanisms based on Fourier cosine series, a minute and precise pulsatile flow of a wave functional form may be implemented by means of simple configuration and fabrication, which may not easily obtained by a conventional pump.
Abstract translation: 用于产生脉冲流的装置包括能够容纳液体的液体容器，与其相关联的多个旋转机构和从液体容器供应液体的微通道。 当多个旋转机构旋转时，在液体容器和微通道之间出现周期性变化的压差，从而在微通道中实现具有波函数形式的脉动流。 通过应用基于傅立叶余弦系列的旋转机构的液压头差和控制旋转，可以通过简单的构造和制造实现波函数形式的微小和精确的脉动流，这可能不容易由常规泵 。
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公开(公告)号：US20140335442A1
公开(公告)日：2014-11-13
申请号：US14043263
申请日：2013-10-01
Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
Inventor： Hyung Chul HAM , Shin Ae Song , Seong Cheol Jang , Yong Min Kim , Jonghee Han , Hyoung-Juhn Kim , Tae Hoon Lim , Suk Woo Nam , Sung Pil Yoon , Chang Won Yoon , Yeong Cheon Kim
CPC classification number: H01M4/905 , B22F5/006 , B22F9/20 , B22F2999/00 , C22C1/0433 , H01M4/8621 , H01M4/8803 , B22F2201/20
Abstract: Provided is a method for preparing nickel-aluminum alloy powder at low temperature, which is simple and economical and is capable of solving the reactor corrosion problem. The method for preparing nickel-aluminum alloy powder at low temperature includes: preparing a powder mixture by mixing nickel powder and aluminum powder in a reactor and adding aluminum chloride into the reactor (S1); vacuumizing the inside of the reactor and sealing the reactor (S2); and preparing nickel-aluminum alloy powder by heat-treating the powder mixture in the sealed reactor at low temperature (S3).
Abstract translation: 提供一种在低温下制备镍 - 铝合金粉末的方法，其简单经济且能够解决反应器腐蚀问题。 在低温下制备镍 - 铝合金粉末的方法包括：通过将镍粉和铝粉混合在反应器中并向反应器中加入氯化铝来制备粉末混合物（S1）; 抽真空反应器内部并密封反应器（S2）; 并通过在密封反应器中在低温下热处理粉末混合物来制备镍 - 铝合金粉末（S3）。
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