公开(公告)号：US20220085386A1

公开(公告)日：2022-03-17

申请号：US17470120

申请日：2021-09-09

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Sung Jong YOO ,  Sang Moon KIM ,  Changwook SEOL ,  Segeun JANG

IPC: H01M4/88 ,  H01M8/1004 ,  H01M4/86

Abstract: The present disclosure relates to a membrane electrode assembly including: a polymer electrolyte membrane; an anode catalyst layer formed on one side of the polymer electrolyte membrane; a cathode catalyst layer formed on the other side of the polymer electrolyte membrane; and a porous carbon layer formed on the cathode catalyst layer on the side opposite to the side contacting with the polymer electrolyte membrane and comprising a polymer binder and a carbon particle, and a fuel cell including the same. The present disclosure can prevent water evaporation from an electrolyte under low-humidity environment while minimizing decrease in performance under high-humidity operating environment and can improve fuel cell performance by facilitating the back diffusion of water generated at the cathode.

公开(公告)号：US20220021015A1

公开(公告)日：2022-01-20

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

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：US20210159512A1

公开(公告)日：2021-05-27

申请号：US16802206

申请日：2020-02-26

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

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: The present disclosure relates to a method for preparing a metal single-atom catalyst for a fuel cell. The method for preparing a metal single-atom catalyst uses a relatively lower amount of chemical substances as compared to the conventional methods and thus is eco-friendly, uses no liquid through the whole process and avoids a need for additional steps for separating and/or washing the catalyst after its synthesis, thereby allowing simplification of the process, and can produce a single-atom catalyst at low cost. In addition, unlike the conventional methods having a limitation in metallic materials, the method can be applied in common regardless of types of metals, and thus is significantly advantageous in that it can be applied widely to obtain various types of metal single-atom catalysts. Further, in the method for preparing a metal single-atom catalyst, metal atoms totally participate in the reaction. Thus, the method can minimize the usage of metal to provide high cost-efficiency.

公开(公告)号：US20200230589A1

公开(公告)日：2020-07-23

申请号：US16534216

申请日：2019-08-07

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

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: B01J37/34 ,  B01J23/50 ,  B01J23/52 ,  B01J37/02

Abstract: 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.

公开(公告)号：US20190161868A1

公开(公告)日：2019-05-30

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: C25B1/10 ,  C25B11/03 ,  C25B11/04 ,  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.

公开(公告)号：US20180102562A1

公开(公告)日：2018-04-12

申请号：US15719557

申请日：2017-09-29

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Jin Young KIM ,  Sunhee JO ,  So Young LEE ,  Sung Jong YOO ,  Jong Hyun JANG ,  Hyoung-Juhn KIM ,  Jonghee HAN ,  Suk Woo NAM ,  Tae Hoon LIM

IPC: H01M8/106 ,  H01M8/1039 ,  H01M8/1069

CPC classification number: H01M8/106 ,  H01M8/1039 ,  H01M8/1053 ,  H01M8/1069 ,  H01M2008/1095 ,  Y02P70/56

Abstract: Provided is a composite polymer electrolyte membrane for a fuel cell, including: a porous fluorinated polymer support; and a perfluorinated sulfonic acid polymer resin membrane which fills the inside of pores of the porous perfluorinated polymer support and covers an external surface of the porous fluorinated polymer support.

公开(公告)号：US20150266762A1

公开(公告)日：2015-09-24

申请号：US14339884

申请日：2014-07-24

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Jong Hyun JANG ,  Hyoung-Juhn KIM ,  Suk Woo NAM ,  Jaeyune RYU ,  Sung Jong YOO ,  Sung Pil YOON ,  Tae Hoon LIM ,  Eun Ae CHO ,  Insoo CHOI ,  Jonghee HAN ,  Jun Young HAN ,  Dirk HENKENSMEIER

IPC: C02F9/00 ,  C02F1/14 ,  C02F1/469

CPC classification number: C02F1/4693 ,  C02F1/14 ,  C02F2103/007 ,  C02F2103/08 ,  C02F2209/05 ,  Y02A20/128 ,  Y02A20/129 ,  Y02A20/134 ,  Y02A20/142 ,  Y02W10/37

Abstract: In a complex system including a desalination plant and a reverse electrodialysis equipment, a concentrated sea water discharged from the desalination plant having a salt concentration of about 50 to 75 g/L or about 50 to 60 g/L is provided as a high-concentration salt solution of the reverse electrodialysis equipment while low salinity water having a salt concentration of about 0.01 to 2 g/L, most preferably about 0.01 to 1 g/L, is provided as a low-concentration salt solution of the reverse electrodialysis equipment. Thereby, a recycling degree of a concentrated sea water may be enhanced as well as a power density produced by the complex system is significantly improved.

Abstract translation: 在包括脱盐设备和反电渗设备的复杂系统中，从盐水浓度为约50至75g / L或约50至60g / L的脱盐设备排出的浓缩海水作为高浓度 作为反电渗析设备的低浓度盐溶液，提供盐浓度为约0.01〜2g / L，最优选为0.01〜1g / L左右的低盐度水的逆电渗析设备的盐溶液。 由此，可以提高浓缩海水的再循环度，并且显着提高复合体系产生的功率密度。

公开(公告)号：US20140224124A1

公开(公告)日：2014-08-14

申请号：US13892548

申请日：2013-05-13

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Hyoung-Juhn KIM ,  Jun Young HAN ,  Jong Hyun JANG ,  Eun Ae CHO ,  Jonghee HAN ,  Suk Woo NAM ,  Tae-Hoon LIM ,  Sung Pil YOON ,  Sung Jong YOO ,  Dirk HENKENSMEIER

IPC: B01D71/62 ,  B01D67/00

CPC classification number: B01D71/62 ,  B01D53/228 ,  B01D67/0002 ,  B01D67/0095 ,  B01D2256/12 ,  B01D2257/102 ,  C01B13/0251 ,  C08G73/18

Abstract: Provided are cardo copolybenzimidazoles, a gas separation membrane using the same and a method for preparing the same. More particularly, provided are cardo copolybenzimidazoles obtained by introducing cardo groups and aromatic ether groups to a polybenzimidazole backbone, a gas separation membrane having significantly improved oxygen permeability by using the same, and a method for preparing the same. The cardo copolybenzimidazoles have improved solubility as compared to the polybenzimidazole polymers according to the related art, show excellent mechanical properties while maintaining thermal stability so as to be formed into a film shape, and provide a gas separation membrane having significantly improved gas permeability, particularly, oxygen permeability.

Abstract translation: 提供的是共聚苯并咪唑类，其使用的气体分离膜及其制备方法。 更具体地说，提供了通过将聚苯并咪唑主链导体基团和芳族醚基团引入的共聚苯并咪唑，通过使用它们具有显着改善的氧渗透性的气体分离膜及其制备方法。 与根据现有技术的聚苯并咪唑聚合物相比，卡诺共聚苯并咪唑具有改善的溶解性，显示优异的机械性能，同时保持热稳定性以形成膜状，并提供具有显着改善的气体渗透性的气体分离膜， 透氧性。

公开(公告)号：US20250019847A1

公开(公告)日：2025-01-16

申请号：US18700216

申请日：2022-09-15

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Jin Young KIM ,  Youngjoon LIM ,  Taehyun KWON ,  Byeong-jo MIN ,  Bora SEO ,  Hee-Young PARK ,  So Young LEE ,  Hyun Seo PARK ,  Sung Jong YOO ,  Hyoung-Juhn KIM ,  Jong Hyun JANG

IPC: C25B13/08 ,  C25B13/02

Abstract: The present disclosure relates to a multilayer reinforced composite electrolyte membrane and a method for manufacturing the same. The multilayer reinforced composite electrolyte membrane according to the present disclosure has sufficient mechanical properties and improved membrane resistance at the same time since a porous support is impregnated in an ionomer and it is stacked in a multilayer structure. Furthermore, since the composite electrolyte membrane has no wrinkles and cracks due to excellent dimensional stability, it can improve the electrochemical properties of batteries.

公开(公告)号：US20210273240A1

公开(公告)日：2021-09-02

申请号：US16934893

申请日：2020-07-21

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： 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

IPC: H01M4/92 ,  H01M4/88 ,  H01M4/90 ,  H01M4/86

Abstract: 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.