Patents by Inventor Chung-Yul YOO

Chung-Yul YOO 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).

  • Publication number: 20220302458
    Abstract: Disclosed are a flexible electrode substrate including a porous electrode, a method for manufacturing the flexible electrode substrate, and an energy storage element including the flexible electrode substrate. The flexible electrode substrate can be attached to various objects due to the excellent electrochemical properties and the adhesive properties thereof and thus is very useful. In particular, since the flexible electrode substrate can be used as an electrode of an energy storage element, an energy storage element including the flexible electrode substrate can be attached to various objects and thus can be used as a sticker-type energy storage element. In addition, the flexible electrode substrate can be easily manufactured by transfer method using a difference in adhesive strength and thus allows a simple manufacturing process thereof. Furthermore, electrodes having various patterns can be manufactured with high level of efficiency through simple adjustment of the manufacturing process.
    Type: Application
    Filed: August 13, 2019
    Publication date: September 22, 2022
    Applicant: KOREA INSTITUTE OF ENERGY RESEARCH
    Inventors: Ha Na YOON, Chung Yul YOO, Sang Hyun PARK, Jung Joon YOO, Young A LEE, Jae Hyun JEON, Kyu Yeon JANG
  • Patent number: 11315742
    Abstract: A sticker-type electronic device which is freely detachably attachable to various bodies repeatedly is provided. The electronic device includes a main substrate which exhibits a surface adhesion property due to the properties of a material thereof and which provides an attachment/detachment surface to an article, and an electrode formed by being transferred from a temporary substrate to a surface that is opposite to the attachment/detachment surface of the main substrate to the article wherein the electrode is transferred directly to the main substrate using the adhesion property of the main substrate. The electronic device is freely detachably attachable to the surface of the article repeatedly using the surface adhesion property of the main substrate. The electronic device is formed directly on the surface of the substrate constituted by the material having the surface adhesion property, thereby providing a sticker-type electronic device which is freely repeatedly detachably attachable to various bodies.
    Type: Grant
    Filed: October 12, 2018
    Date of Patent: April 26, 2022
    Assignee: KOREA INSTITUTE OF ENERGY RESEARCH
    Inventors: Hana Yoon, Chung-yul Yoo, Sang-hyun Park, Jung-Joon Yoo, Younghyun Cho, Yeoung A Lee, Jiyoung Lee, Jaehyun Jeon
  • Publication number: 20200006751
    Abstract: A sticker-type electronic device which is freely detachably attachable to various bodies repeatedly is provided. The electronic device includes a main substrate which exhibits a surface adhesion property due to the properties of a material thereof and which provides an attachment/detachment surface to an article, and an electrode formed by being transferred from a temporary substrate to a surface that is opposite to the attachment/detachment surface of the main substrate to the article wherein the electrode is transferred directly to the main substrate using the adhesion property of the main substrate. The electronic device is freely detachably attachable to the surface of the article repeatedly using the surface adhesion property of the main substrate. The electronic device is formed directly on the surface of the substrate constituted by the material having the surface adhesion property, thereby providing a sticker-type electronic device which is freely repeatedly detachably attachable to various bodies.
    Type: Application
    Filed: October 12, 2018
    Publication date: January 2, 2020
    Inventors: Hana YOON, Chung-yul YOO, Sang-hyun PARK, Jung-Joon YOO, Younghyun CHO, Yeoung A LEE, Jiyoung LEE, Jaehyun JEON
  • Patent number: 10247685
    Abstract: Disclosed herein are a high-temperature structure for measuring properties of a curved thermoelectric device, which is capable of precisely measuring the properties of a medium-temperature curved thermoelectric device that is applied to a tube-type waste heat source and is used in research, and a system and a method for measuring the properties using the same. The high-temperature structure may include a plurality of rod-shaped cartridge heaters, and a heating element having a surface that is a curved surface coming into contact with a lower end of the curved thermoelectric device, having a plurality of holes for accommodating the plurality of cartridge heaters, and directly heating the lower end of the curved thermoelectric device.
    Type: Grant
    Filed: July 26, 2016
    Date of Patent: April 2, 2019
    Assignees: KOREA INSTITUTE OF ENERGY RESEARCH, KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Sang Hyun Park, Chung-Yul Yoo, Hong Soo Kim, Min Soo Suh, Dong Kook Kim, Byung jin Cho
  • Patent number: 10147864
    Abstract: This invention relates to a metalized skutterudite thermoelectric material having improved long-term stability and a method of manufacturing the same, wherein the skutterudite thermoelectric material is metalized with a multilayer structure including a Ti layer for preventing the diffusion of the skutterudite thermoelectric material and a Fe—Ni layer for preventing an increase in the thickness of an intermetallic compound layer, whereby the performance of the skutterudite thermoelectric material does not deteriorate due to diffusion and formation of the intermetallic compound even upon long-term use, thus exhibiting improved stability of use, and moreover, the lifetime and stability of a thermoelectric power generation module using the skutterudite thermoelectric material can be increased, whereby the power generation efficiency of the thermoelectric power generation module can be increased in the long term.
    Type: Grant
    Filed: September 5, 2017
    Date of Patent: December 4, 2018
    Assignees: KOREA INSTITUTE OF ENERGY RESEARCH, KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Sang Hyun Park, Chung-Yul Yoo, Young Hwan Jin, Hana Yoon, Byung jin Cho
  • Publication number: 20180294400
    Abstract: This invention relates to a metalized skutterudite thermoelectric material having improved long-term stability and a method of manufacturing the same, wherein the skutterudite thermoelectric material is metalized with a multilayer structure including a Ti layer for preventing the diffusion of the skutterudite thermoelectric material and a Fe—Ni layer for preventing an increase in the thickness of an intermetallic compound layer, whereby the performance of the skutterudite thermoelectric material does not deteriorate due to diffusion and formation of the intermetallic compound even upon long-term use, thus exhibiting improved stability of use, and moreover, the lifetime and stability of a thermoelectric power generation module using the skutterudite thermoelectric material can be increased, whereby the power generation efficiency of the thermoelectric power generation module can be increased in the long term.
    Type: Application
    Filed: September 5, 2017
    Publication date: October 11, 2018
    Inventors: Sang Hyun PARK, Chung-Yul YOO, Young Hwan JIN, Hana YOON, Byung jin CHO
  • Patent number: 10017866
    Abstract: The present disclosure relates to an ammonia synthesis apparatus, and more particularly, to an electrochemical ammonia synthesis apparatus using an aqueous solution or a molten liquid of an alkali metal as an electrolyte. According to one or more embodiments, when an aqueous solution or a molten liquid of an alkali metal is used as an electrolyte in an ammonia synthesis apparatus, compositions, sizes, and shapes of an electrode and an electrolyte may be easily controlled, and thus a yield of ammonia synthesis may improve.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: July 10, 2018
    Assignee: KOREA INSTITUTE OF ENERGY RESEARCH
    Inventors: Chung-yul Yoo, Hyung-chul Yoon, Ji-haeng Yu, Jong Hoon Joo, Jong-nam Kim
  • Patent number: 9831517
    Abstract: A unit cell includes an air inlet/outlet that is formed on a frame unit rather than being installed in a fuel electrode (anode) to simplify a sealing process, and accordingly, a continuous process using a tape casting technique may be performed. In addition, an electrolyte material that is in contact with an air electrode (cathode) in the frame unit is optimized to improve ion conductivity and a porosity of an upper layer material of the fuel electrode unit is optimized to increase fuel diffusion from a gas channel to an electrolyte layer. In addition, a sealing process performed inside the unit cell or between the unit cells of the stack is stabilized and strongly maintained, and thus a fuel cell using the unit cell and the stack disclosed herein may have excellent economic feasibility and high energy efficiency.
    Type: Grant
    Filed: August 27, 2015
    Date of Patent: November 28, 2017
    Assignee: KOEA INSTITUTE OF ENERGY RESEARCH
    Inventors: Ji Haeng Yu, Jong Hoon Joo, Chung-Yul Yoo
  • Patent number: 9724640
    Abstract: The present invention provides: an electrode-supporting type of gas-separation membrane module for selectively effecting the passage of a gas via an electron exchange reaction due to a coupling-material layer and gas exchange via an ion-conducting separation layer; a tubular structure of same; a production method for the tubular structure; and a hydrocarbon-reforming method using the gas-separation membrane module. The present invention is advantageous in that outstanding chemical and mechanical durability can be ensured by using a fluorite-based ion-conducting membrane which is chemically stable in CO2 and H2O atmospheres in particular, at high temperature, and in that a pure gas can be produced inexpensively since the passage of gas occurs due to an internal circuit even without applying a voltage from the outside.
    Type: Grant
    Filed: October 31, 2013
    Date of Patent: August 8, 2017
    Assignee: KOREA INSTITUTE OF ENERGY RESEARCH
    Inventors: Jong Hoon Joo, Ji Haeng Yu, Chung-Yul Yoo
  • Publication number: 20170205364
    Abstract: Disclosed herein are a high-temperature structure for measuring properties of a curved thermoelectric device, which is capable of precisely measuring the properties of a medium-temperature curved thermoelectric device that is applied to a tube-type waste heat source and is used in research, and a system and a method for measuring the properties using the same. The high-temperature structure may include a plurality of rod-shaped cartridge heaters, and a heating element having a surface that is a curved surface coming into contact with a lower end of the curved thermoelectric device, having a plurality of holes for accommodating the plurality of cartridge heaters, and directly heating the lower end of the curved thermoelectric device.
    Type: Application
    Filed: July 26, 2016
    Publication date: July 20, 2017
    Applicants: KOREA INSTITUTE OF ENERGY RESEARCH, KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Sang Hyun PARK, Chung-Yul YOO, Hong Soo KIM, Min Soo SUH, Dong Kook KIM, Byung jin CHO
  • Publication number: 20170005341
    Abstract: The present disclosure discloses an oxygen separation membrane with high permeability coated with electroactive materials on both sides thereof in which electronic conductive materials and ionic conductive materials are mixed in an optimal ratio whereby the oxygen separation membrane according to the present disclosure has high oxygen permeability and a good thermal stability. Further the present membrane can be advantageously prepared using a simple process such as Tape casting and using a simple sintering process.
    Type: Application
    Filed: January 21, 2016
    Publication date: January 5, 2017
    Inventors: Ji-haeng YU, Jong-hoon JOO, Kyung Sic YUN, Chung-yul YOO
  • Publication number: 20160138176
    Abstract: The present disclosure relates to an ammonia synthesis apparatus, and more particularly, to an electrochemical ammonia synthesis apparatus using an aqueous solution or a molten liquid of an alkali metal as an electrolyte. According to one or more embodiments, when an aqueous solution or a molten liquid of an alkali metal is used as an electrolyte in an ammonia synthesis apparatus, compositions, sizes, and shapes of an electrode and an electrolyte may be easily controlled, and thus a yield of ammonia synthesis may improve.
    Type: Application
    Filed: September 30, 2015
    Publication date: May 19, 2016
    Inventors: Chung-yul Yoo, Hyung-chul Yoon, Ji-haeng Yu, Jong Hoon Joo, Jong-nam Kim
  • Publication number: 20160064767
    Abstract: A unit cell includes an air inlet/outlet that is formed on a frame unit rather than being installed in a fuel electrode (anode) to simplify a sealing process, and accordingly, a continuous process using a tape casting technique may be performed. In addition, an electrolyte material that is in contact with an air electrode (cathode) in the frame unit is optimized to improve ion conductivity and a porosity of an upper layer material of the fuel electrode unit is optimized to increase fuel diffusion from a gas channel to an electrolyte layer. In addition, a sealing process performed inside the unit cell or between the unit cells of the stack is stabilized and strongly maintained, and thus a fuel cell using the unit cell and the stack disclosed herein may have excellent economic feasibility and high energy efficiency.
    Type: Application
    Filed: August 27, 2015
    Publication date: March 3, 2016
    Inventors: Ji Haeng YU, Jong Hoon JOO, Chung-Yul YOO
  • Publication number: 20150328582
    Abstract: The present invention provides: an electrode-supporting type of gas-separation membrane module for selectively effecting the passage of a gas via an electron exchange reaction due to a coupling-material layer and gas exchange via an ion-conducting separation layer; a tubular structure of same; a production method for the tubular structure; and a hydrocarbon-reforming method using the gas-separation membrane module. The present invention is advantageous in that outstanding chemical and mechanical durability can be ensured by using a fluorite-based ion-conducting membrane which is chemically stable in CO2 and H2O atmospheres in particular, at high temperature, and in that a pure gas can be produced inexpensively since the passage of gas occurs due to an internal circuit even without applying a voltage from the outside.
    Type: Application
    Filed: October 31, 2013
    Publication date: November 19, 2015
    Applicant: KOREA INSTITUTE OF ENERGY RESEARCH
    Inventors: Jong Hoon JOO, Ji Haeng YU, Chung-Yul YOO