公开(公告)号：US20200335800A1

公开(公告)日：2020-10-22

申请号：US16850750

申请日：2020-04-16

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Jin Young KIM ,  Jong Min KIM ,  Hee-Young PARK ,  So Young LEE ,  Hyun Seo PARK ,  Sung Jong YOO ,  Jong Hyun JANG ,  Hyoung-Juhn KIM ,  Chang Won YOON ,  Jonghee HAN

IPC: H01M4/92 ,  H01M4/86

Abstract: The present disclosure relates to a fluorine-doped tin oxide support, a platinum catalyst for a fuel cell comprising the same, and a method for producing the same. The present disclosure has a high electrical conductivity and electrochemical durability by doping fluorine to the tin oxide-based support through an electrospinning process. Thus, while resolving a degradation issue of the carbon support in the conventional commercially available platinum/carbon (Pt/C) catalyst, the present disclosure is designed to minimize an electrochemical elution of dopant or tin, which is a limitation of the tin oxide support itself and has excellent performance as a catalyst for a fuel cell.

公开(公告)号：US20200061584A1

公开(公告)日：2020-02-27

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

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：US20230006216A1

公开(公告)日：2023-01-05

申请号：US17571662

申请日：2022-01-10

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： So Young LEE ,  Seung Ju LEE ,  Jin Hyeon CHOI ,  Jeawoo JUNG ,  Hyoung-Juhn KIM ,  Sung Jong YOO ,  Hee-Young PARK ,  Bora SEO ,  Jin Young KIM ,  Jong Hyun JANG

IPC: H01M4/86 ,  H01M8/1004 ,  H01M8/1018 ,  H01M4/90 ,  H01M4/92

Abstract: The present disclosure relates to antioxidant for a polymer electrolyte membrane fuel cell electrode catalyst, which includes cerium hydrogen phosphate (HCe2(PO4)3(H2O)) in the form of a nanofiber, and an electrode and a membrane-electrode assembly including the same. The electrode for a polymer electrolyte membrane fuel cell of the present disclosure, wherein the antioxidant is dispersed, can improve the mechanical strength of an electrode catalyst layer and can minimize deterioration of chemical durability even after long-term operation. And, a fuel cell including the same can exhibit high output performance and can operate stably even after long-term operation.

公开(公告)号：US20220181646A1

公开(公告)日：2022-06-09

申请号：US17677723

申请日：2022-02-22

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 ,  H01M4/86 ,  H01M4/88 ,  H01M4/90

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.

公开(公告)号：US20210332486A1

公开(公告)日：2021-10-28

申请号：US17038331

申请日：2020-09-30

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： So Young LEE ,  Hyoung-Juhn KIM ,  Sae Yane BAEK ,  Taekyung LEE ,  Sung Jong YOO ,  Jong Hyun JANG ,  Hee-Young PARK ,  Jin Young KIM ,  Hyun S. PARK

IPC: C25B9/10 ,  C25B1/10 ,  C25B13/02 ,  C25B13/08 ,  C25B11/04 ,  B01D67/00 ,  B01D71/06

Abstract: The present disclosure discloses an asymmetric electrolyte membrane, a membrane electrode assembly including the same, a water electrolysis apparatus including the same and a method for manufacturing the same. More particularly, it discloses an asymmetric electrolyte membrane having a porous layer and a dense layer at the same time, a membrane electrode assembly including the same, a water electrolysis apparatus including the same and a method for manufacturing the same.

公开(公告)号：US20210253445A1

公开(公告)日：2021-08-19

申请号：US17036726

申请日：2020-09-29

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Dong Won CHUN ,  Sung Jong YOO ,  Jaeyoung HONG ,  Hee-Young PARK ,  Young-Su LEE ,  Jin-Yoo SUH ,  Jee-Hwan BAE ,  Min Kyung CHO

IPC: C01G55/00

Abstract: Provided is a method of preparing palladium hydride nanoparticles having a hcp crystal structure.
According to an embodiment of the present invention, the method includes: (a) preparing a liquid cell containing a palladium precursor solution; (b) applying electron beams to the palladium precursor solution contained in the liquid cell; and (c) generating palladium hydride nanoparticles having the hcp crystal structure in the palladium precursor solution.

公开(公告)号：US20210066741A1

公开(公告)日：2021-03-04

申请号：US16814619

申请日：2020-03-10

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Hyun Seo PARK ,  Ahyoun LIM ,  Ju Sung LEE ,  Hee-Young PARK ,  So Young LEE ,  Jin Young KIM ,  Sung Jong YOO ,  Dirk HENKENSMEIER ,  Jong Hyun JANG ,  Hyoung-Juhn KIM

IPC: H01M8/18 ,  H01M8/1004 ,  H01M8/1231 ,  H01M4/90 ,  H01M4/92 ,  H01M4/86

Abstract: Disclosed is a high temperature-type unitized regenerative fuel cell using water vapor, which exhibits high hydrogen (H2) production efficiency and superior power generation ability.

公开(公告)号：US20240076788A1

公开(公告)日：2024-03-07

申请号：US18156277

申请日：2023-01-18

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Hyun S. PARK ,  Jong Hyun JANG ,  Hee-Young PARK ,  Su Ji LEE ,  Sung Jong YOO ,  Jin Young KIM ,  Jimin KONG ,  Jin-ho OH ,  So Young LEE

IPC: C25B11/091 ,  C25B1/04 ,  C25B11/056 ,  C25B11/063

CPC classification number: C25B11/091 ,  C25B1/04 ,  C25B11/056 ,  C25B11/063

Abstract: Disclosed are an oxidizing electrode, a water electrolysis device including the same and a method for manufacturing the same. According to exemplary embodiments of the present disclosure, there is provided an oxidizing electrode with improved performance at low loadings of noble metals, especially, ruthenium (Ru) and iridium oxide, in which a ruthenium (Ru) layer and an iridium oxide layer formed on a substrate by electrodeposition in a sequential order are supported by electrochemical reaction rather than physical bonding.

公开(公告)号：US20220170168A1

公开(公告)日：2022-06-02

申请号：US17537209

申请日：2021-11-29

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Han Ik JO ,  Hee-Young PARK ,  Jong Hyun JANG ,  Hyun S. PARK ,  Bora SEO ,  Hyoung-Juhn KIM ,  Sung Jong YOO

IPC: C25B11/052 ,  C25B1/04 ,  C25B11/081

Abstract: The present disclosure provides a high-performance electrode for water electrolysis using electrospray, a membrane electrode assembly including the same, a water electrolysis device including the electrode for water electrolysis, and a method for manufacturing the electrode for water electrolysis. The present disclosure is to provide a membrane electrode assembly (MEA) having increased porosity by using electrospray, and to apply the membrane electrode assembly to electrolysis.

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.