Patents by Inventor Kook Il Han

Kook Il Han 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: 11374233
    Abstract: An apparatus for manufacturing a gas diffusion layer for fuel cells includes: a conveyer transferring a base sheet for a macroporous layer of the gas diffusion layer in one direction before water repellent coating; a nozzle disposed around the conveyer to coat the transferring base sheet with a water repellent in a fiber type or desired pattern; and a nozzle transfer unit combined with an upper end of the nozzle to transfer the nozzle along a desired trajectory.
    Type: Grant
    Filed: July 25, 2016
    Date of Patent: June 28, 2022
    Assignee: Hyundai Motor Company
    Inventors: Kook Il Han, Yoo Chang Yang, Sang Mun Jin
  • Publication number: 20220181644
    Abstract: Disclosed are a method of manufacturing a carbon support for a fuel cell catalyst, a carbon support for a fuel cell catalyst manufactured according to the method, and a catalyst for a fuel cell including the same. The method may include using various organic materials containing N and various carbon supports and thus provide excellent economic feasibility. In addition, pyridinic N and pyrrolic N of doped N can be adjusted at an optimal content ratio so that the carbon support for a fuel cell catalyst manufactured and the catalyst for a fuel cell including the same have excellent electrochemical resistance and excellent electrochemical characteristic due to an increase in an electrochemically active surface area, and excellent durability due to an increase in thermal durability.
    Type: Application
    Filed: March 30, 2021
    Publication date: June 9, 2022
    Inventors: Ji Hoon Yang, Jin Seong Choi, Kook Il Han, Geon Hee Cho, Jin Woo Lee, Ah Ryeon Lee
  • Publication number: 20220166032
    Abstract: Disclosed herein is a method of manufacturing a support for a catalyst of a fuel cell. The method may include preparing an admixture including a carbon material and a cerium precursor into a reactor, providing the admixture in a reactor, raising a temperature of the reactor to a predetermined temperature, and introducing water vapor into the reactor to perform an activation reaction of the carbon material.
    Type: Application
    Filed: September 28, 2021
    Publication date: May 26, 2022
    Inventors: Geon Hee Cho, Ji Hoon Yang, Kook Il Han, Jin Seong Choi
  • 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
  • Patent number: 10826082
    Abstract: A fuel cell and a method for producing the same are provided. The fuel cell includes a membrane electrode assembly and a gas diffusion layer that is disposed at each of opposite surfaces of the membrane electrode assembly, and includes a plurality of compressed parts that are formed by pressure at positions spaced out at predetermined intervals on the gas diffusion layer. The fuel cell further includes a separator that is in contact with an outer surface of the gas diffusion layer, and has a plurality of land parts that protrude toward the gas diffusion layer, and a plurality of channel parts that form flow paths between the land parts. The land parts respectively protrude toward the compressed parts of the gas diffusion layer to come in contact with the compressed parts.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: November 3, 2020
    Assignee: Hyundai Motor Company
    Inventors: Suk Min Baeck, Dae Il Yoon, Yoo Chang Yang, Kook Il Han
  • Patent number: 10629918
    Abstract: The present invention provides a fuel cell stack with enhanced freeze-thaw durability. In particular, the fuel cell stack includes a gas diffusion layer between a membrane-electrode assembly and a bipolar plate. The gas diffusion layer has a structure that reduces contact resistance in a fuel cell and is cut at a certain angle such that the machine direction (high stiffness direction) of GDL roll is not in parallel with the major flow field direction of the bipolar plate, resulting in an increased GDL stiffness in a width direction perpendicular to a major flow field direction of a bipolar plate.
    Type: Grant
    Filed: April 1, 2011
    Date of Patent: April 21, 2020
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Bo Ki Hong, Kook Il Han, Sae Hoon Kim, Jae Jun Ko
  • Patent number: 10593957
    Abstract: In one embodiment, a gas diffusion layer for fuel cells includes a fine porous layer formed on a carbon fiber support and being interposed between a membrane-electrode assembly (MEA) and a separator. The carbon fiber support includes a fine pore area having a predetermined average pore size in a separator direction (thickness direction) in the membrane electrode assembly, and a coarse pore area having a larger predetermined average pore size than the average pore size of the fine pore area in the separator direction (thickness direction) in the membrane electrode assembly. The fine pore area and the coarse pore area are alternately formed.
    Type: Grant
    Filed: July 31, 2017
    Date of Patent: March 17, 2020
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Jae Man Park, Kook Il Han, Ji Han Lee
  • Patent number: 10511043
    Abstract: A gas diffusion layer (GDL) for fuel cell applications that can prevented channels of a bipolar plate from being intruded. The gas diffusion layer is manufactured by cutting a GDL material at a certain angle such that a machine direction of the inherent high stiffness of the GDL material is not in parallel with a major flow field direction of a bipolar plate to prevent the GDL intrusion into the channels of the bipolar plate without modifying an existing method for manufacturing the gas diffusion layer. With the gas diffusion layer, the electrochemical performance of the fuel cell can be improved and manufacturing process can be improved even in the case where the width of the rolled GDL material is small.
    Type: Grant
    Filed: February 10, 2010
    Date of Patent: December 17, 2019
    Assignee: Hyundai Motor Company
    Inventors: Bo Ki Hong, Kook Il Han
  • Patent number: 10431838
    Abstract: A gas diffusion layer (GDL) for fuel cell applications that can prevented channels of a bipolar plate from being intruded. The gas diffusion layer is manufactured by cutting a GDL material at a certain angle such that a machine direction of the inherent high stiffness of the GDL material is not in parallel with a major flow field direction of a bipolar plate to prevent the GDL intrusion into the channels of the bipolar plate without modifying an existing method for manufacturing the gas diffusion layer. With the gas diffusion layer, the electrochemical performance of the fuel cell can be improved and manufacturing process can be improved even in the case where the width of the rolled GDL material is small.
    Type: Grant
    Filed: February 18, 2014
    Date of Patent: October 1, 2019
    Assignee: Hyundai Motor Company
    Inventors: Bo Ki Hong, Kook Il Han
  • Patent number: 10320008
    Abstract: A porous separator for a fuel cell is provided and features the shape of a passage aperture formed in a flow field plate. The modified shape of the passage aperture minimizes destruction of a gas diffusion layer or a membrane electrode assembly attributable to stress concentration. The porous separator has a flow field plate that includes a first contact portion that is in contact with a gas diffusion layer or a membrane electrode assembly; a second contact portion that is in contact with a coolant channel; and a connection portion that is connected between the first contact portion and the second contact portion. Additionally, a passage aperture is formed in the connection portion, wherein a portion of an inside surface of the passage aperture protrudes toward a center of the passage aperture.
    Type: Grant
    Filed: March 30, 2016
    Date of Patent: June 11, 2019
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Sang Mun Jin, Kook Il Han
  • Patent number: 10103392
    Abstract: A membrane-electrode assembly (MEA) for fuel cells includes an electricity-generating array including an anode, a cathode, and an electrolyte membrane. A subgasket array includes an anode subgasket surrounding a periphery of the anode and a cathode subgasket surrounding a periphery of the cathode. A junction array includes a polar junction and a nonpolar junction surrounding a periphery of the electrolyte membrane and attaching the anode subgasket and the cathode subgasket to each other.
    Type: Grant
    Filed: June 18, 2014
    Date of Patent: October 16, 2018
    Assignee: HYUNDAI MOTOR COMPANY
    Inventors: Bo Ki Hong, Kook Il Han, Ji Yeon Park, Byeong Heon Jeong, Sang Hyun Cho, Chae Won Lim
  • Publication number: 20180175393
    Abstract: In one embodiment, a gas diffusion layer for fuel cells includes a fine porous layer formed on a carbon fiber support and being interposed between a membrane-electrode assembly (MEA) and a separator. The carbon fiber support includes a fine pore area having a predetermined average pore size in a separator direction (thickness direction) in the membrane electrode assembly, and a coarse pore area having a larger predetermined average pore size than the average pore size of the fine pore area in the separator direction (thickness direction) in the membrane electrode assembly. The fine pore area and the coarse pore area are alternately formed.
    Type: Application
    Filed: July 31, 2017
    Publication date: June 21, 2018
    Inventors: Jae Man Park, Kook Il Han, Ji Han Lee
  • Patent number: 9923222
    Abstract: Disclosed is a fuel cell with enhanced mass transfer characteristics in which a highly hydrophobic porous medium, which is prepared by forming a micro-nano dual structure in which nanometer-scale protrusions with a high aspect ratio are formed on the surface of a porous medium with a micrometer-scale roughness by plasma etching and then by depositing a hydrophobic thin film thereon, is used as a gas diffusion layer, thereby increasing hydrophobicity due to the micro-nano dual structure and the hydrophobic thin film. When this highly hydrophobic porous medium is used as a gas diffusion layer for a fuel cell, it is possible to reduce water flooding by efficiently discharging water produced by an electrochemical reaction of the fuel cell and to improve the performance of the fuel cell by facilitating the supply of reactant gases such as hydrogen and air (oxygen) to a membrane-electrode assembly (MEA).
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: March 20, 2018
    Assignees: Hyundai Motor Company, Korea Institute of Science and Technology
    Inventors: Bo Ki Hong, Sae Hoon Kim, Kook Il Han, Kwang Ryeol Lee, Myoung Woon Moon
  • Patent number: 9847535
    Abstract: The present invention provides a fuel cell stack with enhanced freeze-thaw durability. In particular, the fuel cell stack includes a gas diffusion layer between a membrane-electrode assembly and a bipolar plate. The gas diffusion layer has a structure that reduces contact resistance in a fuel cell and is cut at a certain angle such that the machine direction (high stiffness direction) of GDL roll is not in parallel with the major flow field direction of the bipolar plate, resulting in an increased GDL stiffness in a width direction perpendicular to a major flow field direction of a bipolar plate.
    Type: Grant
    Filed: December 12, 2014
    Date of Patent: December 19, 2017
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Bo Ki Hong, Kook Il Han, Sae Hoon Kim, Jae Jun Ko
  • Publication number: 20170346105
    Abstract: A fuel cell and a method for producing the same are provided. The fuel cell includes a membrane electrode assembly and a gas diffusion layer that is disposed at each of opposite surfaces of the membrane electrode assembly, and includes a plurality of compressed parts that are formed by pressure at positions spaced out at predetermined intervals on the gas diffusion layer. The fuel cell further includes a separator that is in contact with an outer surface of the gas diffusion layer, and has a plurality of land parts that protrude toward the gas diffusion layer, and a plurality of channel parts that form flow paths between the land parts. The land parts respectively protrude toward the compressed parts of the gas diffusion layer to come in contact with the compressed parts.
    Type: Application
    Filed: September 2, 2016
    Publication date: November 30, 2017
    Inventors: Suk Min Baeck, Dae Il Yoon, Yoo Chang Yang, Kook Il Han
  • Patent number: 9819034
    Abstract: Disclosed is a stack for simulating a cell voltage reversal behavior in a fuel cell. The stack is configured to have a structure in which a separator of a portion of a plurality of cells in the stack have an inlet of a hydrogen flow field partially blocked to induce hydrogen starvation only in the portion of the plurality of cells.
    Type: Grant
    Filed: November 15, 2016
    Date of Patent: November 14, 2017
    Assignee: Hyundai Motor Company
    Inventors: Bo Ki Hong, Kook Il Han, Ji Yeon Park, Se Joon Im
  • Publication number: 20170162880
    Abstract: An apparatus for manufacturing a gas diffusion layer for fuel cells includes: a conveyer transferring a base sheet for a macroporous layer of the gas diffusion layer in one direction before water repellent coating; a nozzle disposed around the conveyer to coat the transferring base sheet with a water repellent in a fiber type or desired pattern; and a nozzle transfer unit combined with an upper end of the nozzle to transfer the nozzle along a desired trajectory.
    Type: Application
    Filed: July 25, 2016
    Publication date: June 8, 2017
    Inventors: Kook Il HAN, Yoo Chang YANG, Sang Mun JIN
  • Publication number: 20170141418
    Abstract: Disclosed is a stack for simulating a cell voltage reversal behavior in a fuel cell. The stack is configured to have a structure in which a separator of a portion of a plurality of cells in the stack have an inlet of a hydrogen flow field partially blocked to induce hydrogen starvation only in the portion of the plurality of cells.
    Type: Application
    Filed: November 15, 2016
    Publication date: May 18, 2017
    Inventors: Bo Ki Hong, Kook Il Han, Ji Yeon Park, Se Joon Im
  • Publication number: 20160344044
    Abstract: A porous separator for a fuel cell is provided and features the shape of a passage aperture formed in a flow field plate. The modified shape of the passage aperture minimizes destruction of a gas diffusion layer or a membrane electrode assembly attributable to stress concentration. The porous separator has a flow field plate that includes a first contact portion that is in contact with a gas diffusion layer or a membrane electrode assembly; a second contact portion that is in contact with a coolant channel; and a connection portion that is connected between the first contact portion and the second contact portion. Additionally, a passage aperture is formed in the connection portion, wherein a portion of an inside surface of the passage aperture protrudes toward a center of the passage aperture.
    Type: Application
    Filed: March 30, 2016
    Publication date: November 24, 2016
    Inventors: Sang Mun Jin, Kook Il Han
  • Patent number: 9496566
    Abstract: Disclosed is a stack for simulating a cell voltage reversal behavior in a fuel cell. The stack is configured to have a structure in which a separator of a portion of a plurality of cells in the stack have an inlet of a hydrogen flow field partially blocked to induce hydrogen starvation only in the portion of the plurality of cells.
    Type: Grant
    Filed: November 29, 2012
    Date of Patent: November 15, 2016
    Assignee: Hyundai Motor Company
    Inventors: Bo Ki Hong, Kook Il Han, Ji Yeon Park, Se Joon Im