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：US20170051419A1

公开(公告)日：2017-02-23

申请号：US15241798

申请日：2016-08-19

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Jong Hyun JANG ,  Soo-Kil KIM ,  Sang Hyun AHN ,  Hyoung-Juhn KIM ,  Jin Young KIM ,  Sung Jong YOO ,  Dirk HENKENSMEIER ,  Jonghee HAN ,  Jaeyune RYU

IPC: C25B11/04 ,  C25D3/50 ,  C25D3/12 ,  C25B1/10 ,  C25B9/10

CPC classification number: C25B11/0478 ,  C23C18/54 ,  C25B1/10 ,  C25B9/10 ,  C25B11/0405 ,  C25B11/0415 ,  C25D3/12 ,  C25D5/54 ,  Y02E60/366

Abstract: Provided is an electrocatalyst for anion exchange membrane water electrolysis, including a carbonaceous material, and nickel electrodeposited on the carbonaceous material, wherein nickel is partially substituted with platinum and the substitution with platinum provides increased hydrogen evolution activity as compared to the same electrocatalyst before substitution with platinum. Also provided are a method for preparing the electrocatalyst and an anion exchange membrane water electrolyzer using the same. The nickel electrocatalyst coated with an ultralow loading amount of platinum for anion exchange membrane water electrolysis shows excellent hydrogen evolution activity and has a small thickness of catalyst, thereby providing high mass transfer and high catalyst availability. In addition, the electrocatalyst uses a particle-type electrode to facilitate emission of hydrogen bubbles generated during hydrogen evolution reaction and oxygen bubbles generated during oxygen evolution reaction, and requires low cost for preparation to provide high cost-efficiency.

Abstract translation: 本发明提供了一种阴离子交换膜水电解用电解质，包括碳质材料和电沉积在碳质材料上的镍，其中镍部分被铂取代，与铂取代相比，与铂取代相同的电催化剂相比，提供的析氢活性提高， 铂。 还提供了制备电极催化剂的方法和使用其的阴离子交换膜水电解槽。 涂覆有超低负载量的铂用于阴离子交换膜水电解的镍电催化剂显示出优异的析氢活性并具有小的催化剂厚度，从而提供高的传质和高的催化剂可用性。 此外，电极催化剂使用粒子型电极来促进放氢反应期间产生的氢气泡的发射和在析氧反应期间产生的氧气泡，并且需要低成本的制备以提供高成本效率。

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.

公开(公告)号：US20180212264A1

公开(公告)日：2018-07-26

申请号：US15679562

申请日：2017-08-17

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Hyoung-Juhn KIM ,  So Young LEE ,  Jieon CHAE ,  Jong Hyun JANG ,  Sung Jong YOO ,  Jin Young KIM ,  Hyun Seo PARK ,  Dirk Henkensmeier

IPC: H01M8/1004

CPC classification number: H01M8/1004 ,  H01M8/04089 ,  H01M8/04291 ,  H01M8/1016 ,  H01M2300/0088

Abstract: A membrane electrode assembly includes a cation exchange membrane electrode assembly and an anion exchange membrane electrode assembly. The cation exchange membrane includes a cation exchange membrane, a first cathode electrode disposed on the cation exchange membrane, and a first anode electrode disposed under the cation exchange membrane. The anion exchange membrane electrode assembly includes an anion exchange membrane, a second cathode electrode disposed on the anion exchange membrane, and a second anode electrode disposed under the anion exchange membrane. The cation exchange membrane and the anion exchange membrane partially contact each other, and the first cathode electrode, the first anode electrode, the second cathode electrode, and the second anode electrode do not contact one another.