公开(公告)号：US20230163317A1

公开(公告)日：2023-05-25

申请号：US17855068

申请日：2022-06-30

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Sung Jong YOO ,  Myeong-Geun KIM ,  Bora SEO ,  Hee-Young PARK ,  So Young LEE ,  Hyun Seo PARK ,  Jin Young KIM ,  Hyoung-Juhn KIM ,  Jong Hyun JANG

IPC: H01M4/92 ,  H01M4/90

CPC classification number: H01M4/923 ,  H01M4/9083

Abstract: The present disclosure relates to a method for preparing a catalyst for a fuel cell, a catalyst for a fuel cell and a fuel cell including the same. More specifically, the catalyst for a fuel cell according to the present disclosure, wherein ruthenium chalcogenide including the 1T phase exists as single-walled nanotubes, can reduce manufacturing cost by exhibiting superior catalytic activity so as to replace the existing platinum catalyst and can significantly improve stability.

公开(公告)号：US20210320303A1

公开(公告)日：2021-10-14

申请号：US16901127

申请日：2020-06-15

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Hyoung-Juhn KIM ,  Ji Eon CHAE ,  So Young LEE ,  Hee-Young PARK ,  Jin Young KIM ,  Jong Hyun JANG ,  Hyun Seo PARK ,  Sung Jong YOO

IPC: H01M4/86 ,  H01M4/88 ,  C08F212/14

Abstract: The present disclosure relates to a styrene-based copolymer for an electrode binder of a solid alkaline fuel cell, represented by the following Chemical Formula 1, an electrode binder including the same, and a membrane electrode assembly including the electrode binder. The electrode binder for a solid alkaline fuel cell is obtained by dispersing the styrene-based copolymer for an electrode binder in a mixed solvent of alcohol with water. Thus, even when coating electrode catalyst slurry including the electrode binder directly on an electrolyte membrane, the electrolyte membrane is not damaged so that the quality of a solid alkaline fuel cell using the same may be improved. wherein x is an integer of 2-10, and each of m and n represents the number of repeating units.

公开(公告)号：US20200152996A1

公开(公告)日：2020-05-14

申请号：US16386395

申请日：2019-04-17

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Hyoung-Juhn KIM ,  Min Jae LEE ,  Ju Sung LEE ,  Katie Heeyum LIM ,  So Young LEE ,  Hee-Young PARK ,  Hyun Seo PARK ,  Jin Young KIM ,  Sung Jong YOO ,  Jong Hyun JANG

IPC: H01M4/88 ,  H01M8/1004 ,  H01M4/86 ,  H01M4/92 ,  H01M8/103

Abstract: Disclosed is a method for producing an electrode for a high temperature polymer electrolyte membrane fuel cell. According to the method, a catalyst slurry containing a uniformly dispersed binder is used to produce an electrode. Also disclosed are a membrane electrode assembly using the electrode and a high temperature polymer electrolyte membrane fuel cell including the membrane electrode assembly. Uniform distribution of the binder leads to improvements in the performance and reproducibility of the fuel cell.

公开(公告)号：US20190341624A1

公开(公告)日：2019-11-07

申请号：US16268856

申请日：2019-02-06

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Jong Hyun JANG ,  Hee-Young PARK ,  Jea-woo JUNG ,  Hyoung-Juhn KIM ,  Dirk HENKENSMEIER ,  Sung Jong YOO ,  Jin Young KIM ,  So Young LEE ,  Hyun Seo PARK

IPC: H01M4/92

Abstract: The present disclosure relates to a method for preparing a carbon-supported platinum-transition metal alloy nanoparticle catalyst. More particularly, the present disclosure provides a method for preparing a carbon-supported platinum-transition metal alloy nanoparticle catalyst using a stabilizer, the method including the steps of: (a) mixing a platinum precursor, a transition metal precursor, carbon, stabilizer and a reducing agent solution, and carrying out washing and drying to obtain carbon-supported platinum-transition metal alloy nanoparticles; (b) mixing the carbon-supported platinum-transition metal alloy nanoparticles with an acetic acid solution, and carrying out washing and drying to obtain acetic acid-treated nanoparticles; and (c) heat treating the acetic acid-treated nanoparticles. Thus, it is possible to obtain a carbon-supported platinum-transition metal alloy nanoparticle catalyst through a more simple and eco-friendly process as compared to the related art, and to apply the catalyst to a high-performance and high-durability fuel cell catalyst.

公开(公告)号：US20190071786A1

公开(公告)日：2019-03-07

申请号：US16122640

申请日：2018-09-05

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Jong Hyun JANG ,  Seunghoe CHOE ,  Youngseung NA ,  Hye Jin LEE ,  Hyoung-Juhn KIM ,  Dirk Henkensmeier ,  Sung Jong YOO ,  Jin Young KIM ,  So Young LEE ,  Hyun Seo PARK

IPC: C25B11/04 ,  C25B1/10 ,  C25B9/08

Abstract: Provided is a membrane electrode assembly for a proton exchange membrane water electrolyzer, including: an oxygen electrode including an iridium oxide (IrO2) layer which is an electrodeposited oxygen electrode layer on a titanium (Ti) layer which is a diffusion layer; a hydrogen electrode in which a hydrogen electrode layer is formed on a diffusion layer; and an electrolyte membrane placed between the oxygen electrode layer and the hydrogen electrode layer, in which a portion of the pores of the Ti diffusion layer are filled with an electrolyte of the electrolyte membrane.

公开(公告)号：US20180254490A1

公开(公告)日：2018-09-06

申请号：US15910304

申请日：2018-03-02

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Sung Jong YOO ,  Jue-hyuk JANG ,  So Young LEE ,  Jin Young KIM ,  Jong Hyun JANG ,  Hyoung-Juhn KIM ,  Namgee JUNG ,  Hyun Seo PARK

IPC: H01M4/90 ,  H01M4/88

CPC classification number: H01M4/9041 ,  B01J21/18 ,  B01J23/75 ,  H01M4/88 ,  H01M4/9083 ,  H01M2008/1095

Abstract: A catalyst containing a carbon support and a core-shell nanoparticle supported on the carbon support, wherein a core of the core-shell nanoparticle is cobalt metal not containing a heterogeneous element and the shell contains carbon. The catalyst for an oxygen reduction reaction of the present disclosure is a catalyst in which the cobalt core-carbon shell nanoparticle is supported on the carbon support through ligand stabilization and heat treatment. The catalyst can be synthesized to have high dispersibility. In particular, it can be used as an electrode catalyst of a cathode to improve the oxygen reduction activity and durability of a fuel cell operating under an alkaline atmosphere.

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：US20210119237A1

公开(公告)日：2021-04-22

申请号：US16859712

申请日：2020-04-27

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： So Young LEE ,  Seung Ju LEE ,  Min Jae LEE ,  Hyun Seo PARK ,  Jong Hyun JANG ,  Hyoung-Juhn KIM ,  Suk Woo NAM ,  Young Suk JO ,  Yeong Cheon KIM

IPC: H01M8/1051 ,  H01M8/103 ,  H01M8/1072

Abstract: The present disclosure relates to a polymer electrolyte membrane for medium and high temperature, a preparation method thereof and a high-temperature polymer electrolyte membrane fuel cell including the same, more particularly to a technology of preparing a composite membrane including an inorganic phosphate nanofiber incorporated into a phosphoric acid-doped polybenzimidazole (PBI) polymer membrane by adding an inorganic precursor capable of forming a nanofiber in a phosphoric acid solution when preparing phosphoric acid-doped polybenzimidazole and using the same as a high-temperature polymer electrolyte membrane which is thermally stable even at high temperatures of 200-300° C. without degradation of phosphoric acid and has high ion conductivity.

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：US20180138534A1

公开(公告)日：2018-05-17

申请号：US15686689

申请日：2017-08-25

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Jong Hyun JANG ,  Hyoung-Juhn KIM ,  Sung Jong YOO ,  Jin Young KIM ,  Hyung Chul HAM ,  Dirk HENKENSMEIER ,  So Young LEE ,  Hyun Seo PARK ,  Youngseung NA ,  Min Gwan HA

IPC: H01M8/1018 ,  H01M8/00 ,  H01M8/0276

CPC classification number: H01M8/1018 ,  H01M8/006 ,  H01M8/0258 ,  H01M8/0271 ,  H01M8/0276 ,  H01M8/1009 ,  H01M2008/1095

Abstract: Disclosed is an electrochemical reaction cell enhancing a reduction reaction. The electrochemical reaction cell enhancing a reduction reaction comprises: a membrane electrode assembly including a polymer electrolytic membrane, a cathode formed by sequentially stacking a first gas diffusion layer and a first catalyst layer on one surface of the electrolytic membrane, and an anode formed by sequentially stacking a second catalyst layer and a second gas diffusion layer on the other surface of the electrolytic membrane; a first distribution plate stacked on the first catalyst layer to supply a reaction gas and a cathode electrolytic solution dissolved with the reaction gas to the first catalyst layer along separate channels; and a second distribution plate stacked on the second gas diffusion layer to supply an anode electrolytic solution to the second gas diffusion layer.