Patents by Inventor Hwan-yeong OH

Hwan-yeong OH has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11813600
    Abstract: The present disclosure is related to a method for preparing a gaseous- or liquid-nitridation treated core-shell catalyst and, more specifically, to a method for preparing a gaseous- or liquid-nitridation treated core-shell catalyst comprising steps of: nitridation-treating a transition metal precursor core and noble metal precursor shell particles in the presence of a gaseous nitrogen source; or forming a transition metal precursor core and noble metal precursor shell particles, by means of a liquid nitrogen source, and at the same time allowing the nitrogen source to bond with the transition metal precursor and thus allowing nitridation treatment. Therefore, the present disclosure allows a high nitrogen content in the core and thus enables a prepared catalyst to have excellent durability, a small average particle size and high degree of dispersion and uniformity, and thus to be suitable for the fuel cell field.
    Type: Grant
    Filed: July 5, 2018
    Date of Patent: November 14, 2023
    Assignee: KOREA INSTITUTE OF ENERGY RESEARCH
    Inventors: Gu-gon Park, Eun-jik Lee, Dong-chul Park, Sung-dae Yim, Chang-soo Kim, Won-yong Lee, Tae-hyun Yang, Seok-hee Park, Min-jin Kim, Young-jun Sohn, Byung-chan Bae, Seung-gon Kim, Dong-won Shin, Hwan-yeong Oh
  • Publication number: 20230187659
    Abstract: A modeling method for designing a flow field of a fuel cell including a membrane electrode assembly including a catalyst layer and an electrolyte membrane, a gas diffusion layer, a flow field, and a bipolar plate includes modeling using a numerical model derived from a governing equation including a mass conservation equation of species, a fluid momentum in a porous media, and a modified Butler-Volmer's equation and outputting an oxygen diffusion characteristic in a catalyst layer from the modeling result.
    Type: Application
    Filed: December 13, 2022
    Publication date: June 15, 2023
    Applicant: KOREA INSTITUTE OF ENERGY RESEARCH
    Inventors: Min Jin KIM, Young Jun SOHN, Hwan Yeong OH, Yoon Young CHOI, Seung Gon KIM, Won Yong LEE, Tae Hyun YANG, Seok Hee PARK, Sung Dae YIM, Seung Hee WOO, Yun Sik KANG, Gu Gon PARK, Eun Jik LEE, So Jeong LEE, Byung Chan BAE, Dong Won SHIN, Hye Jin LEE, Dong Hwan PARK
  • Patent number: 11489179
    Abstract: A hierarchical fault classification method for a fuel cell system, a multi-stage fault diagnosis method therefor, and a fault diagnosis device therefor are disclosed. The fuel cell system is divided into a subsystem, a component, and an element step by step. The multi-stage fault diagnosis method includes detecting a subsystem, a fault of which occurs, in the fuel cell system composed of a plurality of subsystems and detecting an upper-level component, which causes the fault, among upper-level components included in the subsystem, the fault of which occurs, using measurement data and a control signal.
    Type: Grant
    Filed: January 30, 2020
    Date of Patent: November 1, 2022
    Assignee: Korea Institute of Energy Research
    Inventors: Won Yong Lee, Hwan Yeong Oh, Min Jin Kim, Seok Hee Park, Gu Gon Park, Tae Hyun Yang, Sung Dae Yim, Young Jun Sohn, Byung Chan Bae, Seung Gon Kim, Dong Won Shin, Seung Hee Woo, So Jeong Lee, Hye Jin Lee, Yoon Young Choi
  • Patent number: 11362361
    Abstract: Provided is a method for manufacturing a membrane-electrode assembly. The method includes forming an electrode layer, preparing a porous support layer, and positioning the electrode layer on each of both surfaces of the porous support layer and hot-pressing the electrode layer positioned on the both surfaces. The forming of the electrode layer incudes forming a functional layer including a hydrogen ion conductive binder resin on at least a portion of an electrode catalyst layer, and forming an electrolyte layer on at least a portion of the functional layer. The preparing of the porous support layer includes performing a pretreatment process by impregnating the porous support layer with a pretreatment composition, and the performing of the pretreatment process includes dipping the porous support layer in a first pretreatment composition and then drying the porous support layer, and dipping the porous support layer after drying in a second pretreatment composition.
    Type: Grant
    Filed: March 12, 2020
    Date of Patent: June 14, 2022
    Assignee: KOREA INSTITUTE OF ENERGY RESEARCH
    Inventors: Sung Hee Shin, Byung Chan Bae, Seok Hee Park, Chang Soo Kim, Won Yong Lee, Gu Gon Park, Tae Hyun Yang, Sung Dae Yim, Min Jin Kim, Young Jun Sohn, Seung Gon Kim, Dong Won Shin, Hwan Yeong Oh, Hye Jin Lee
  • Patent number: 11211617
    Abstract: Disclosed is a fuel cell filter including a body including therein an internal space in which a fluid flows, an inlet port provided in the body and configured to receive a fluid discharged from a fuel cell stack, a gas-water separating membrane disposed in the internal space and configured to block a liquid fluid included in a fluid absorbed in the inlet port from flowing upwards, a discharge port provided in the body and configured to externally discharge the liquid fluid blocked in the gas-water separating membrane, a water absorbent disposed in the internal space and configured to absorb water included in a gaseous fluid passing through the gas-water separating membrane, and a gas outlet port provided in the body and configured to externally discharge gas separated in the gas-water separating membrane.
    Type: Grant
    Filed: February 11, 2019
    Date of Patent: December 28, 2021
    Assignee: KOREA INSTITUTE OF ENERGY RESEARCH
    Inventors: Young-jun Sohn, Hwan Yeong Oh, Dong Won Shin, Seung-gon Kim, Byungchan Bae, Min-jin Kim, Sung-dae Yim, Tae-hyun Yang, Gu-gon Park, Won-yong Lee, Chang-soo Kim, Seok-hee Park
  • Publication number: 20210159529
    Abstract: The present invention relates to a method for manufacturing a membrane-electrode assembly, a membrane-electrode assembly, and a fuel cell. More specifically, the present invention relates to a method for manufacturing a membrane-electrode assembly, a membrane-electrode assembly, and a fuel cell, the method comprising: preparing an electrode layer; preparing a porous support layer; and positioning the electrode layer on each of both surfaces of the porous support layer, and hot pressing the electrode layer positioned on both surfaces of the porous support layer, wherein the preparing of the electrode layer comprises: forming a functional layer including a hydrogen ion conductive binder resin on at least a portion on an electrode catalyst layer; and forming an electrolyte layer on at least a portion on the functional layer.
    Type: Application
    Filed: March 12, 2020
    Publication date: May 27, 2021
    Applicant: KOREA INSTITUTE OF ENERGY RESEARCH
    Inventors: Sung Hee SHIN, Byung Chan BAE, Seok Hee PARK, Chang Soo KIM, Won Yong LEE, Gu Gon PARK, Tae Hyun YANG, Sung Dae YIM, Min Jin KIM, Young Jun SOHN, Seung Gon KIM, Dong Won SHIN, Hwan Yeong OH, Hye Jin LEE
  • Publication number: 20210075040
    Abstract: A hierarchical fault classification method for a fuel cell system, a multi-stage fault diagnosis method therefor, and a fault diagnosis device therefor are disclosed. The fuel cell system is divided into a subsystem, a component, and an element step by step. The multi-stage fault diagnosis method includes detecting a subsystem, a fault of which occurs, in the fuel cell system composed of a plurality of subsystems and detecting an upper-level component, which causes the fault, among upper-level components included in the subsystem, the fault of which occurs, using measurement data and a control signal.
    Type: Application
    Filed: January 30, 2020
    Publication date: March 11, 2021
    Applicant: KOREA INSTITUTE OF ENERGY RESEARCH
    Inventors: Won Yong LEE, Hwan Yeong OH, Min Jin KIM, Seok Hee PARK, Gu Gon PARK, Tae Hyun YANG, Sung Dae YIM, Young Jun SOHN, Byung Chan BAE, Seung Gon KIM, Dong Won SHIN, Seung Hee WOO, So Jeong LEE, Hye Jin LEE, Yoon Young CHOI
  • Patent number: 10930936
    Abstract: An apparatus and a method for manufacturing a continuous reactor type core-shell catalyst electrode, which may manufacture a large amount of continuous reactor type core-shell catalyst electrodes by improving coating efficiency of shell metal by using reaction chambers disposed in a circular shape or in a line are provided. The apparatus for manufacturing a continuous reactor type core-shell catalyst electrode includes: a main body; reaction chambers which are disposed plurally in a circular shape inside the main body, store reaction solution inside thereof, are equipped with a movable member and counter electrodes, and are coupled with a reference electrode to a lateral portion thereof; a palladium sheet which is moved by the movable member and immersed in the reaction solution as the movable member moves downward; a power supply which applies a voltage to the electrodes.
    Type: Grant
    Filed: June 12, 2019
    Date of Patent: February 23, 2021
    Assignee: KOREA INSTITUTE OF ENERGY RESEARCH
    Inventors: Gu-gon Park, Hyo-june Lee, Chang-soo Kim, Won-yong Lee, Tae-hyun Yang, Sung-dae Yim, Min-jin Kim, Young-jun Sohn, Byung-chan Bae, Seung-gon Kim, Dong-won Shin, Hwan-yeong Oh, Seung-hee Woo, So-jeong Lee, Hye-jin Lee, Yoon-young Choi, Seok-hee Park
  • Publication number: 20200346199
    Abstract: The present disclosure is related to a method for preparing a gaseous- or liquid-nitridation treated core-shell catalyst and, more specifically, to a method for preparing a gaseous- or liquid-nitridation treated core-shell catalyst comprising steps of: nitridation-treating a transition metal precursor core and noble metal precursor shell particles in the presence of a gaseous nitrogen source; or forming a transition metal precursor core and noble metal precursor shell particles, by means of a liquid nitrogen source, and at the same time allowing the nitrogen source to bond with the transition metal precursor and thus allowing nitridation treatment. Therefore, the present disclosure allows a high nitrogen content in the core and thus enables a prepared catalyst to have excellent durability, a small average particle size and high degree of dispersion and uniformity, and thus to be suitable for the fuel cell field.
    Type: Application
    Filed: July 5, 2018
    Publication date: November 5, 2020
    Inventors: GU-gon PARK, Eun-jik LEE, Dong-chul PARK, Sung-dae YIM, Chang-soo KIM, Won-yong LEE, Tae-hyun YANG, Seok-hee PARK, Min-jin KIM, Young-jun SOHN, Byung-chan BAE, Seung-gon KIM, Dong-won SHIN, Hwan-yeong OH
  • Publication number: 20200168914
    Abstract: The present disclosure provides an apparatus and a method for manufacturing a continuous reactor type core-shell catalyst electrode, which may manufacture a large amount of continuous reactor type core-shell catalyst electrodes by improving coating efficiency of shell metal by using reaction chambers disposed in a circular shape or in a line.
    Type: Application
    Filed: June 12, 2019
    Publication date: May 28, 2020
    Applicant: KOREA INSTITUTE OF ENERGY RESEARCH
    Inventors: Gu-gon PARK, Hyo-june LEE, Chang-soo KIM, Won-yong LEE, Tae-hyun YANG, Sung-dae YIM, Min-jin KIM, Young-jun SOHN, Byung-chan BAE, Seung-gon KIM, Dong-won SHIN, Hwan-yeong OH, Seung-hee WOO, So-jeong LEE, Hye-jin LEE, Yoon-young CHOI, Seok-hee PARK
  • Publication number: 20190252698
    Abstract: Disclosed is a fuel cell filter including a body including therein an internal space in which a fluid flows, an inlet port provided in the body and configured to receive a fluid discharged from a fuel cell stack, a gas-water separating membrane disposed in the internal space and configured to block a liquid fluid included in a fluid absorbed in the inlet port from flowing upwards, a discharge port provided in the body and configured to externally discharge the liquid fluid blocked in the gas-water separating membrane, a water absorbent disposed in the internal space and configured to absorb water included in a gaseous fluid passing through the gas-water separating membrane, and a gas outlet port provided in the body and configured to externally discharge gas separated in the gas-water separating membrane.
    Type: Application
    Filed: February 11, 2019
    Publication date: August 15, 2019
    Inventors: Young-jun SOHN, Hwan Yeong OH, Dong Won SHIN, Seung-gon KIM, Byungchan BAE, Min-jin KIM, Sung-dae YIM, Tae-hyun YANG, Gu-gon PARK, Won-yong LEE, Chang-soo KIM, Seok-hee PARK