Patents by Inventor Su Won SEOL

Su Won SEOL 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: 12100846
    Abstract: The present disclosure relates to a tube-shaped catalyst complex and a catalyst slurry including the same for a fuel cell. The catalyst complex for a fuel cell comprises a tubular inner layer including an ionomer and an outer layer provided on an outer surface of the inner layer and including a catalyst.
    Type: Grant
    Filed: June 8, 2022
    Date of Patent: September 24, 2024
    Assignees: HYUNDAI MOTOR COMPANY, KIA CORPORATION
    Inventors: Yoon Hwan Cho, Su Won Seol, Byeong Gab Ji
  • Publication number: 20240266550
    Abstract: Disclosed are an electrode including a porous substrate, a membrane-electrode assembly for a fuel cell including the same and a method of manufacturing the same. In the method of manufacturing the membrane-electrode assembly, the amount of a catalyst that is loaded depending on the position is applied in a gradational manner, thus efficiently using the catalyst, thereby reducing costs owing to the use of a decreased amount of the metal catalyst. Further, the membrane-electrode assembly includes the electrode including a porous substrate, thus making it easy to select hot-pressing conditions and increasing processing efficiency. The porous substrate is hydrophobic and the pore size in the electrode is not decreased compared to conventional electrodes, thus reducing flooding and generating various operation regions. The electrode including the porous substrate can minimize electrode loss, thus improving electrode durability.
    Type: Application
    Filed: March 27, 2024
    Publication date: August 8, 2024
    Inventors: Su Won Seol, Ji Hoon Yang, Yoon Hwan Cho
  • Patent number: 12002968
    Abstract: The present disclosure relates to a method of manufacturing catalyst slurry for fuel cells capable of greatly improving efficiency in use of catalyst metal and a method of manufacturing an electrode for fuel cells using the catalyst slurry manufactured using the method. Specifically, the method of manufacturing catalyst slurry for fuel cells includes preparing a catalyst including a porous carrier and catalyst metal, introducing the catalyst, a solvent, and an ionomer into a chamber, and infiltrating the ionomer into pores of the carrier.
    Type: Grant
    Filed: June 15, 2020
    Date of Patent: June 4, 2024
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Yoon Hwan Cho, Kook Il Han, Su Won Seol
  • Patent number: 11973230
    Abstract: Disclosed are an electrode including a porous substrate, a membrane-electrode assembly for a fuel cell including the same and a method of manufacturing the same. In the method of manufacturing the membrane-electrode assembly, the amount of a catalyst that is loaded depending on the position is applied in a gradational manner, thus efficiently using the catalyst, thereby reducing costs owing to the use of a decreased amount of the metal catalyst. Further, the membrane-electrode assembly includes the electrode including a porous substrate, thus making it easy to select hot-pressing conditions and increasing processing efficiency. The porous substrate is hydrophobic and the pore size in the electrode is not decreased compared to conventional electrodes, thus reducing flooding and generating various operation regions. The electrode including the porous substrate can minimize electrode loss, thus improving electrode durability.
    Type: Grant
    Filed: September 21, 2020
    Date of Patent: April 30, 2024
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Su Won Seol, Ji Hoon Yang, Yoon Hwan Cho
  • Patent number: 11688871
    Abstract: Disclosed are an electrode for a membrane-electrode assembly, a method of manufacturing the same and a membrane-electrode assembly using the same. The electrode may include the pores and pore density around a catalyst contained in the electrode may be selectively increased using a thermally decomposable chemical blowing agent, thereby improving mass transfer through the catalyst.
    Type: Grant
    Filed: November 23, 2020
    Date of Patent: June 27, 2023
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Byeong Gab Ji, Su Won Seol, Dong Hwan Yoon, Kook Il Han, Yoon Hwan Cho
  • Publication number: 20220393187
    Abstract: The present disclosure relates to a tube-shaped catalyst complex and a catalyst slurry including the same for a fuel cell. The catalyst complex for a fuel cell comprises a tubular inner layer including an ionomer and an outer layer provided on an outer surface of the inner layer and including a catalyst.
    Type: Application
    Filed: June 8, 2022
    Publication date: December 8, 2022
    Inventors: Yoon Hwan Cho, Su Won Seol, Byeong Gab Ji
  • Publication number: 20220384832
    Abstract: Disclosed is an electrode for a membrane-electrode assembly, in which a hydrophilic group and a hydrophobic portion of an ionomer are bonded to a catalyst so that the alignment of the hydrophilic group and the hydrophobic portion of the ionomer is controlled, and a method of manufacturing the same.
    Type: Application
    Filed: May 23, 2022
    Publication date: December 1, 2022
    Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATION
    Inventors: Su Won Seol, Yoon Hwan Cho, Ju Young Lee
  • Patent number: 11362341
    Abstract: Disclosed is a catalyst slurry for fuel cells and a method for manufacturing the same in which two kinds of ionomers having different equivalent weights (EWs) are used such that the respective ionomers may be formed at positions suitable for maximally exhibiting the functions thereof.
    Type: Grant
    Filed: August 31, 2020
    Date of Patent: June 14, 2022
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Ji Hoon Yang, Su Won Seol
  • Patent number: 11171338
    Abstract: Disclosed is a method of manufacturing a membrane electrode assembly with minimized interfacial resistance between an electrode and an electrolyte membrane. For instance, a catalyst admixture including a catalyst composite including a catalyst and a first binder, and a second binder may be applied to a porous substrate and the porous substrate may be impregnated with the second binder, thereby minimizing interfacial resistance between the electrode and the electrolyte membrane and reducing a thickness of the electrolyte membrane.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: November 9, 2021
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Su Won Seol, Yong Min Kim
  • Publication number: 20210336275
    Abstract: Disclosed are an electrode including a porous substrate, a membrane-electrode assembly for a fuel cell including the same and a method of manufacturing the same. In the method of manufacturing the membrane-electrode assembly, the amount of a catalyst that is loaded depending on the position is applied in a gradational manner, thus efficiently using the catalyst, thereby reducing costs owing to the use of a decreased amount of the metal catalyst. Further, the membrane-electrode assembly includes the electrode including a porous substrate, thus making it easy to select hot-pressing conditions and increasing processing efficiency. The porous substrate is hydrophobic and the pore size in the electrode is not decreased compared to conventional electrodes, thus reducing flooding and generating various operation regions. The electrode including the porous substrate can minimize electrode loss, thus improving electrode durability.
    Type: Application
    Filed: September 21, 2020
    Publication date: October 28, 2021
    Inventors: Su Won Seol, Ji Hoon Yang, Yoon Hwan Cho
  • Publication number: 20210313609
    Abstract: Disclosed are an electrode for a membrane-electrode assembly, a method of manufacturing the same and a membrane-electrode assembly using the same. The electrode may include the pores and pore density around a catalyst contained in the electrode may be selectively increased using a thermally decomposable chemical blowing agent, thereby improving mass transfer through the catalyst.
    Type: Application
    Filed: November 23, 2020
    Publication date: October 7, 2021
    Inventors: Byeong Gab Ji, Su Won Seol, Dong Hwan Yoon, Kook ll Han, Yoon Hwan Cho
  • Patent number: 11139499
    Abstract: Disclosed are an apparatus for manufacturing a membrane electrode assembly to provide excellent mass transfer characteristics and durability and a manufacturing method using the same. A porosity gradient may be continuously imparted to electrodes of the membrane electrode assembly in a thickness direction thereby improving reactivity with external gas and transfer of internal ions.
    Type: Grant
    Filed: December 7, 2018
    Date of Patent: October 5, 2021
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Woo Jin Lee, Min Jin Kim, Ki Sub Lee, Su Won Seol
  • Publication number: 20210175516
    Abstract: The present disclosure relates to a method of manufacturing catalyst slurry for fuel cells capable of greatly improving efficiency in use of catalyst metal and a method of manufacturing an electrode for fuel cells using the catalyst slurry manufactured using the method. Specifically, the method of manufacturing catalyst slurry for fuel cells includes preparing a catalyst including a porous carrier and catalyst metal, introducing the catalyst, a solvent, and an ionomer into a chamber, and infiltrating the ionomer into pores of the carrier.
    Type: Application
    Filed: June 15, 2020
    Publication date: June 10, 2021
    Inventors: Yoon Hwan Cho, Kook Il Han, Su Won Seol
  • Publication number: 20210159509
    Abstract: Disclosed is a catalyst slurry for fuel cells and a method for manufacturing the same in which two kinds of ionomers having different equivalent weights (EWs) are used such that the respective ionomers may be formed at positions suitable for maximally exhibiting the functions thereof.
    Type: Application
    Filed: August 31, 2020
    Publication date: May 27, 2021
    Inventors: Ji Hoon Yang, Su Won Seol
  • Patent number: 10847808
    Abstract: A method for manufacturing a fuel cell electrode includes forming a first mixture by mixing a first cation exchange resin, a metal catalyst, and a first solvent, powderizing the first mixture to produce a first catalyst powder comprising the metal catalyst coated with the first cation exchange resin, forming a second mixture by mixing the first catalyst powder, a second cation exchange resin, and a second solvent, powderizing the second mixture to produce a catalyst powder having a core and two or more layers of shells and being coated with the second cation exchange resin, mixing the catalyst powder having the core and two or more layers of shells with a third solvent to produce a catalyst slurry, and coating, using the catalyst slurry, to produce an electrode.
    Type: Grant
    Filed: December 8, 2017
    Date of Patent: November 24, 2020
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Yoon Hwan Cho, Su Won Seol, Ji Hoon Yang, Young Taek Kim, Dae Yong Son
  • Publication number: 20200014037
    Abstract: Disclosed is a method of manufacturing a membrane electrode assembly with minimized interfacial resistance between an electrode and an electrolyte membrane. For instance, a catalyst admixture including a catalyst composite including a catalyst and a first binder, and a second binder may be applied to a porous substrate and the porous substrate may be impregnated with the second binder, thereby minimizing interfacial resistance between the electrode and the electrolyte membrane and reducing a thickness of the electrolyte membrane.
    Type: Application
    Filed: December 10, 2018
    Publication date: January 9, 2020
    Inventors: Su Won Seol, Yong Min Kim
  • Publication number: 20190372143
    Abstract: Disclosed are an apparatus for manufacturing a membrane electrode assembly to provide excellent mass transfer characteristics and durability and a manufacturing method using the same. A porosity gradient may be continuously imparted to electrodes of the membrane electrode assembly in a thickness direction thereby improving reactivity with external gas and transfer of internal ions.
    Type: Application
    Filed: December 7, 2018
    Publication date: December 5, 2019
    Inventors: Woo Jin Lee, Min Jin Kim, Ki Sub Lee, Su Won Seol
  • Publication number: 20190131630
    Abstract: The present invention relates to a method for manufacturing a polymer electrolyte electrode for fuel cells that can improve performance of the electrode for fuel cells and the capability to transfer substances into the electrode by sequentially bringing two kinds of cation exchange resins into contact with catalysts, powderizing the same and incorporating a catalyst having a multilayer structure including a core and two or more layers of shells into the electrode for fuel cells, and an electrode manufactured by the method.
    Type: Application
    Filed: December 8, 2017
    Publication date: May 2, 2019
    Inventors: Yoon Hwan Cho, Su Won Seol, Ji Hoon Yang, Young Taek Kim, Dae Yong Son
  • Publication number: 20170294659
    Abstract: A release liner used for manufacturing a membrane electrode assembly includes one or more first films formed of a material having a releasing property, and a second film bonded to the first films and having a tensile strength higher than a tensile strength of the first film. The first films are formed of polytetrafluoroethylene (PTFE) having a non-bonding property and the releasing property.
    Type: Application
    Filed: April 4, 2017
    Publication date: October 12, 2017
    Inventors: Yong Min KIM, Jin Seong CHOI, Yoon Hwan CHO, Dae Yong SON, Jae Seung LEE, Young Taek KIM, Su Won SEOL