公开(公告)号：US11056693B2

公开(公告)日：2021-07-06

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 ,  H01M4/88

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.

公开(公告)号：US20210013530A1

公开(公告)日：2021-01-14

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: H01M8/04664 ,  H01M8/1004 ,  H01M8/04537 ,  G01R31/392 ,  G01R31/367

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.

公开(公告)号：US10458943B2

公开(公告)日：2019-10-29

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

IPC: G01N27/62 ,  G01K13/00 ,  G01R27/26 ,  H01M8/0247 ,  H01M8/0258 ,  H01M8/1067

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.

公开(公告)号：US10435802B2

公开(公告)日：2019-10-08

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

IPC: B01J35/00 ,  B01J23/28 ,  B01J23/72 ,  B01J23/74 ,  B01J23/881 ,  B01J23/882 ,  B01J23/883 ,  B01J23/885 ,  B01J37/08 ,  B01J37/34 ,  C25B11/04 ,  C25B1/04

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.

公开(公告)号：US09954240B2

公开(公告)日：2018-04-24

申请号：US15132011

申请日：2016-04-18

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY ,  Jagiellonian University

Inventor： Dirk Henkensmeier ,  Jong Hyun Jang ,  Hyoung-Juhn Kim ,  Jin Young Kim ,  Sung Pil Yoon ,  Jonghee Han ,  Suk Woo Nam ,  Ngoc My Hanh Duong ,  Artur Michalak ,  Karol Dyduch ,  Mateusz Brela

IPC: H01M8/103 ,  H01M8/1004 ,  H01M8/12 ,  H01M8/1027 ,  C08G65/40 ,  C08G65/48 ,  C08G65/00 ,  H01M8/1018

CPC classification number: C08G65/40 ,  C08G65/007 ,  C08G65/4037 ,  C08G65/48 ,  H01M8/1004 ,  H01M8/1025 ,  H01M8/1027 ,  H01M8/103 ,  H01M8/12 ,  H01M2008/1095 ,  Y02P70/56

Abstract: Disclosed are a 5-(2,6-dioxyphenyl)tetrazole-containing polymer, a method for preparing the same, a membrane containing the same and an electrochemical device, particularly a high temperature polymer electrolyte membrane fuel cell, including the membrane. The membrane containing the 5-(2,6-dioxyphenyl)tetrazole-containing polymer is capable of providing high proton conductivity and exhibiting good mechanical properties, thereby capable of providing superior fuel cell performance. Accordingly, the membrane may be usefully used in an electrochemical device, particularly a fuel cell, more particularly a high temperature polymer electrolyte membrane fuel cell.

公开(公告)号：US09799904B2

公开(公告)日：2017-10-24

申请号：US14016687

申请日：2013-09-03

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Jong Hyun Jang ,  Hee-young Park ,  Hyoung-Juhn Kim ,  Dirk Henkensmeier ,  Sung Pil Yoon ,  Suk Woo Nam ,  Hyung Chul Ham ,  Tae-Hoon Lim ,  Jonghee Han ,  Sung Jong Yoo ,  Eun Ae Cho

IPC: H01M8/10 ,  H01M8/1004 ,  H01M4/92

CPC classification number: H01M8/1004 ,  H01M4/921 ,  H01M4/923 ,  H01M4/926 ,  Y02P70/56

Abstract: A polymer electrolyte membrane fuel cell is provided. The polymer electrolyte membrane fuel cell includes a phosphoric acid-doped polyimidazole electrolyte membrane and a complex catalyst. In the complex catalyst, an alloy or mixture of a metal and a chalcogen element is supported on a carbon carrier. The polymer electrolyte membrane fuel cell exhibits further improved long-term operation, power generation efficiency, and operational stability at high temperature. The complex catalyst can be produced by a simple method.

公开(公告)号：US11695147B2

公开(公告)日：2023-07-04

申请号：US17013918

申请日：2020-09-08

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： 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: H01M8/1051 ,  H01M8/1039 ,  C08K3/32 ,  C08K7/08 ,  C08F14/18 ,  H01M8/10

CPC classification number: H01M8/1051 ,  C08F14/185 ,  C08K3/32 ,  C08K7/08 ,  H01M8/1039 ,  C08K2003/328 ,  C08K2201/003 ,  C08K2201/011 ,  H01M2008/1095 ,  H01M2300/0082

Abstract: 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.

公开(公告)号：US11430996B2

公开(公告)日：2022-08-30

申请号：US16802206

申请日：2020-02-26

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Sung Jong Yoo ,  Injoon Jang ,  Hee-Young Park ,  So Young Lee ,  Hyun Seo Park ,  Jin Young Kim ,  Jong Hyun Jang ,  Hyoung-Juhn Kim

IPC: H01M4/92 ,  H01M4/88

Abstract: 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.

公开(公告)号：US11090634B2

公开(公告)日：2021-08-17

申请号：US16268913

申请日：2019-02-06

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY ,  GLOBAL FRONTIER CENTER FOR MULTISCALE ENERGY SYSTEMS

Inventor： Sung Jong Yoo ,  Sehyun Lee ,  Hee-Young Park ,  Jong Hyun Jang ,  Jin Young Kim ,  Hyoung-Juhn Kim ,  Jea-woo Jung

IPC: B01J23/42 ,  B01J37/16 ,  H01M4/92

Abstract: Disclosed is a method for preparing a carbon-supported platinum-transition metal alloy nanoparticle catalyst using a stabilizer. According to the method, the transition metal on the nanoparticle surface and the stabilizer are simultaneously removed by treatment with acetic acid. Therefore, the method enables the preparation of a carbon-supported platinum-transition metal alloy nanoparticle catalyst in a simple and environmentally friendly manner compared to conventional methods. The carbon-supported platinum-transition metal alloy nanoparticle catalyst can be applied as a high-performance, highly durable fuel cell catalyst.

公开(公告)号：US10975476B2

公开(公告)日：2021-04-13

申请号：US16198286

申请日：2018-11-21

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： 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: C25B1/04 ,  C25D9/06 ,  C25B9/23 ,  C25B11/031 ,  C25B11/075 ,  C25B11/063 ,  C25B11/052 ,  C25D9/04

Abstract: 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.