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.

公开(公告)号：US10305131B2

公开(公告)日：2019-05-28

申请号：US15200060

申请日：2016-07-01

Applicant: YOULCHON CHEMICAL CO., LTD. ,  KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

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.

公开(公告)号：US11522200B2

公开(公告)日：2022-12-06

申请号：US16710336

申请日：2019-12-11

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Sung Jong Yoo ,  Hee-Young Park ,  So Young Lee ,  Hyun Seo Park ,  Jin Young Kim ,  Jong Hyun Jang ,  Hyoung-Juhn Kim ,  Pil Kim ,  Yeonsun Sohn ,  Jiho Lee

IPC: H01M4/86 ,  H01M4/96 ,  H01M4/90

Abstract: The present disclosure is a method for manufacturing a catalyst for a fuel cell using the blood of slaughtered livestock. The method for manufacturing a catalyst for a fuel cell using the blood of slaughtered livestock of the present disclosure allows preparation of a catalyst for a fuel cell exhibiting high redox reaction activity and very superior durability as compared to a commercially available platinum catalyst through a very simple process of purification of the blood of slaughtered livestock and hydrothermal synthesis. In addition, the method is very economical in that a catalyst is prepared using the pure blood of livestock only without an artificial additive, waste disposal cost can be reduced by recycling the blood of livestock and a high-performance catalyst capable of replacing the expensive platinum catalyst can be prepared.

公开(公告)号：US11214497B2

公开(公告)日：2022-01-04

申请号：US16534294

申请日：2019-08-07

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY ,  INDUSTRIAL COOPERATION FOUNDATION CHONBUK NATIONAL UNIVERSITY ,  GLOBAL FRONTIER CENTER FOR MULTISCALE ENERGY SYSTEMS

Inventor： 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

IPC: C01G55/00 ,  B01J23/00 ,  B01J23/44

Abstract: 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.

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：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：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：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.