Patents by Inventor Hyoung-Juhn Kim

Hyoung-Juhn Kim 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: 20210020954
    Abstract: The present disclosure relates to a fuel cell catalyst and a manufacturing method thereof. The fuel cell catalyst of the present disclosure can be used to manufacture a membrane electrode assembly having a catalyst layer of high density and high dispersion by solving the problem of aggregation of catalyst particles occurring during the formation of the catalyst layer, by using a catalyst including a polydopamine-coated support. In addition, the method for manufacturing a fuel cell catalyst of the present disclosure does not require a solvent because the catalyst including the polydopamine-coated support and the halide in solid phase are simply heat-treated by solid-to-solid dry synthesis and allows manufacturing of a fuel cell catalyst in short time because a washing process using a solvent and an extraction process for sampling are unnecessary after the synthesis.
    Type: Application
    Filed: April 6, 2020
    Publication date: January 21, 2021
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Hee-Young PARK, Jong Hyun JANG, Hyean-Yeol PARK, Jea-Woo JUNG, Katie Heeyum LIM, Hyoung-Juhn KIM, Dirk HENKENSMEIR, Sung Jong YOO, Jin Young KIM, Hyun Seo PARK, So Young LEE
  • Publication number: 20200411880
    Abstract: The present disclosure relates to a method for manufacturing a catalyst for a fuel cell using the blood of slaughtered livestock. The method for manufacturing a catalyst for a fuel cell using the blood of slaughtered livestock of the present disclosure allows preparation of a catalyst for a fuel cell exhibiting high redox reaction activity and very superior durability as compared to a commercially available platinum catalyst through a very simple process of purification of the blood of slaughtered livestock and hydrothermal synthesis. In addition, the method is very economical in that a catalyst is prepared using the pure blood of livestock only without an artificial additive, waste disposal cost can be reduced by recycling the blood of livestock and a high-performance catalyst capable of replacing the expensive platinum catalyst can be prepared.
    Type: Application
    Filed: December 11, 2019
    Publication date: December 31, 2020
    Inventors: Sung Jong YOO, Hee-Young Park, So Young Lee, Hyun Seo Park, Jin Young Kim, Jong Hyun Jang, Hyoung-Juhn Kim, Pil Kim, Yeonsun Sohn, Jiho Lee
  • Patent number: 10850270
    Abstract: Disclosed is a method for preparing a carbon-supported metal oxide and/or alloy nanoparticle catalyst. According to the method, a carbon-supported metal oxide and/or alloy nanoparticle catalyst is prepared by depositing metal oxide and/or alloy nanoparticles on a water-soluble support and dissolving the metal oxide and/or alloy nanoparticles deposited on the water-soluble support in an anhydrous polar solvent containing carbon dispersed therein to support the metal oxide and/or alloy nanoparticles on the carbon. The anhydrous polar solvent has much lower solubility for the water-soluble support than water and is used to dissolve the water-soluble support.
    Type: Grant
    Filed: October 31, 2018
    Date of Patent: December 1, 2020
    Assignees: Korea Institute of Science and Technology, Global Frontier Center for Multiscale Energy Systems
    Inventors: Sung Jong Yoo, Injoon Jang, So Young Lee, Hyun Seo Park, Jin Young Kim, Jong Hyun Jang, Hyoung-Juhn Kim
  • Patent number: 10854886
    Abstract: A method for preparing a carbon-supported, platinum-cobalt alloy, nanoparticle catalyst includes mixing a solution containing, in combination, a platinum precursor, a transition metal precursor consisting of a transition metal that is cobalt, carbon, a stabilizer that is oleyl amine, and a reducing agent that is sodium borohydride to provide carbon-supported, platinum-cobalt alloy nanoparticles, and washing the carbon-supported, platinum-cobalt alloy, nanoparticles using ethanol and distilled water individually or in combination followed by drying at room temperature to obtain dried carbon-supported, platinum-cobalt alloy, nanoparticles; treating the dried carbon-supported, platinum-cobalt alloy, nanoparticles with an acetic acid solution having a concentration ranging from 1-16M to provide acetic acid-treated nanoparticles, and washing the acetic acid-treated nanoparticles using distilled water followed by drying at room temperature to obtain dried acetic acid-treated nanoparticles; and heat treating the dri
    Type: Grant
    Filed: February 6, 2019
    Date of Patent: December 1, 2020
    Assignee: Korea Institute of Science and Technology
    Inventors: 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
  • Patent number: 10818950
    Abstract: A composite polymer electrolyte membrane for a fuel cell may be manufactured by the following method: partially or totally filling the inside of a pore of a porous support with a hydrogen ion conductive polymer electrolyte solution by performing a solution impregnation process; and drying the hydrogen ion conductive polymer electrolyte solution while completely filling the inside of the pore with the hydrogen ion conductive polymer electrolyte solution by performing a spin dry process on the porous support of which the inside of the pore is partially or totally filled with the hydrogen ion conductive polymer electrolyte solution.
    Type: Grant
    Filed: February 1, 2018
    Date of Patent: October 27, 2020
    Assignees: GLOBAL FRONTIER CENTER FOR MULTISCALE ENERGY SYSTEMS, KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Jin Young Kim, Kyung-jin Lee, Kyungah Lee, Nayoung Kim, So Young Lee, Sung Jong Yoo, Jong Hyun Jang, Hyoung-Juhn Kim, Jonghee Han, Suk Woo Nam, Tae Hoon Lim
  • Publication number: 20200335800
    Abstract: The present disclosure relates to a fluorine-doped tin oxide support, a platinum catalyst for a fuel cell comprising the same, and a method for producing the same. The present disclosure has a high electrical conductivity and electrochemical durability by doping fluorine to the tin oxide-based support through an electrospinning process. Thus, while resolving a degradation issue of the carbon support in the conventional commercially available platinum/carbon (Pt/C) catalyst, the present disclosure is designed to minimize an electrochemical elution of dopant or tin, which is a limitation of the tin oxide support itself and has excellent performance as a catalyst for a fuel cell.
    Type: Application
    Filed: April 16, 2020
    Publication date: October 22, 2020
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Jin Young KIM, Jong Min KIM, Hee-Young PARK, So Young LEE, Hyun Seo PARK, Sung Jong YOO, Jong Hyun JANG, Hyoung-Juhn KIM, Chang Won YOON, Jonghee HAN
  • Patent number: 10777834
    Abstract: Disclosed are a method for supplying molten carbonate fuel cell with electrolyte and a molten carbonate fuel cell using the same, wherein a molten carbonate electrolyte is generated from a molten carbonate electrolyte precursor compound in a molten carbonate fuel cell and is supplied to the molten carbonate fuel cell.
    Type: Grant
    Filed: August 11, 2017
    Date of Patent: September 15, 2020
    Assignee: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Sung Pil Yoon, Jonghee Han, Hyung Chul Ham, Chang Won Yoon, Sun-Hee Choi, Hyun Seo Park, Yeong Cheon Kim, Chang-Whan Lee, Hyoung-Juhn Kim, Tae Hoon Lim, Suk Woo Nam, Seong Cheol Jang
  • Publication number: 20200283307
    Abstract: Disclosed are a perovskite compound, a method for producing the perovskite compound, a catalyst for a fuel cell including the perovskite compound, and a method for producing the catalyst. The perovskite compound overcomes the low stability of palladium due to its perovskite structural properties. Therefore, the perovskite compound can be used as a catalyst material for a fuel cell. In addition, the use of palladium in the catalyst instead of expensive platinum leads to an improvement in the price competitiveness of fuel cells. The catalyst is highly durable and catalytically active due to its perovskite structure.
    Type: Application
    Filed: August 7, 2019
    Publication date: September 10, 2020
    Applicants: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY, INDUSTRIAL COOPERATION FOUNDATION CHONBUK NATIONAL UNIVERSITY, GLOBAL FRONTIER CENTER FOR MULTISCALE ENERGY SYSTEMS
    Inventors: Sung Jong YOO, Sehyun Lee, Hee-Young Park, So Young Lee, Hyun Seo Park, Jin Young Kim, Jong Hyun Jang, Hyoung-Juhn Kim, Pil Kim, Jae Young Jung, Yeonsun Sohn
  • Publication number: 20200230589
    Abstract: Disclosed are a metal single-atom catalyst and a method for preparing the same. The method uses a minimal amount of chemicals and is thus environmentally friendly compared to conventional chemical and/or physical methods. In addition, the method enables the preparation of a single-atom catalyst in a simple and economical manner without the need for further treatment such as acid treatment or heat treatment. Furthermore, the method is universally applicable to the preparation of single-atom catalysts irrespective of the kinds of metals and supports, unlike conventional methods that suffer from very limited choices of metal materials and supports. Therefore, the method can be widely utilized to prepare various types of metal single-atom catalysts. All metal atoms in the metal single-atom catalyst can participate in catalytic reactions. This optimal atom utilization achieves maximum reactivity per unit mass and can minimize the amount of the metal used, which is very economical.
    Type: Application
    Filed: August 7, 2019
    Publication date: July 23, 2020
    Applicants: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY, GLOBAL FRONTIER CENTER FOR MULTISCALE ENERGY SYSTEMS
    Inventors: Sung Jong YOO, Injoon JANG, Hee-Young PARK, So Young LEE, Hyun Seo PARK, Jin Young KIM, Jong Hyun JANG, Hyoung-Juhn KIM
  • Patent number: 10710877
    Abstract: The present invention provides a hydrogen generating apparatus and a hydrogen generating method, wherein the hydrogen generating apparatus generates hydrogen by dehydrating formic acid, and comprises: a reactor for containing water and a heterogeneous catalyst; a formic acid feeder for feeding formic acid into the reactor; and a moisture remover for removing moisture generated from the reactor.
    Type: Grant
    Filed: January 27, 2015
    Date of Patent: July 14, 2020
    Assignee: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Chang Won Yoon, Suk Woo Nam, Yeong Cheon Kim, Jonghee Han, Sung Pil Yoon, Hyoung-Juhn Kim, Taekhyun Oh, Tae Hoon Lim, Jin Young Kim, Sun-Hee Choi, Hyung Chul Ham
  • Patent number: 10669640
    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.
    Type: Grant
    Filed: August 19, 2016
    Date of Patent: June 2, 2020
    Assignee: Korea Institute of Science and Technology
    Inventors: Jong Hyun Jang, Soo-Kil Kim, Sang Hyun Ahn, Hyoung-Juhn Kim, Jin Young Kim, Sung Jong Yoo, Dirk Henkensmeier, Jonghee Han, Jaeyune Ryu
  • Publication number: 20200152996
    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.
    Type: Application
    Filed: April 17, 2019
    Publication date: May 14, 2020
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: 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
  • Publication number: 20200131657
    Abstract: The present disclosure relates to an oxygen electrode comprising a dual plating catalyst, a water electrolysis device and a regenerative fuel cell comprising the same, and a method for preparing the oxygen electrode.
    Type: Application
    Filed: October 2, 2019
    Publication date: April 30, 2020
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Hyun Seo PARK, Jong Hyun JANG, Hee-Young PARK, Jin Young KIM, So Young LEE, Sung Jong YOO, Dirk Henkensmeier, Hyoung-Juhn KIM, Ahyoun LIM, Junyoung KIM, Hye Jin LEE
  • Patent number: 10601052
    Abstract: Disclosed are a reversible fuel cell oxygen electrode in which IrO2 is electrodeposited and formed on a porous carbon material and platinum is applied thereon to form a porous platinum layer, a reversible fuel cell including the same, and a method for preparing the same. According to the corresponding reversible fuel cell oxygen electrode, as the loading amounts of IrO2 and platinum used in the reversible fuel cell oxygen electrode can be lowered, it is possible to exhibit excellent reversible fuel cell performances (excellent fuel cell performance and water electrolysis performance) by improving the mass transport of water and oxygen while being capable of reducing the loading amounts of IrO2 and platinum. Further, it is possible to exhibit a good activity of a catalyst when the present disclosure is applied to a reversible fuel cell oxygen electrode and to reduce corrosion of carbon.
    Type: Grant
    Filed: November 23, 2016
    Date of Patent: March 24, 2020
    Assignee: Korea Institute of Science and Technology
    Inventors: Jong Hyun Jang, Byungseok Lee, Hee-Young Park, Hyoung-Juhn Kim, Dirk Henkensmeier, Sung Jong Yoo, Jin Young Kim, So Young Lee, Jaeyune Ryu, Sung Pil Yoon, Jonghee Han, Suk Woo Nam
  • Patent number: 10601075
    Abstract: As a polymerization solvent for use in the polymerization of monomers for a hydrocarbon-based electrolyte polymer, a mixed solvent containing a first solvent, such as dimethyl acetamide, N-methylpyrrolidone or dimethyl sulfoxide, and an alcohol as a second solvent is used instead of a dimethyl acetamide/toluene mixture or dimethyl acetamide alone according to the related art. By using the mixed solvent, it is possible to obtain a molecular weight of polymer equal to or higher than the molecular weight of polymer obtained from the method according to the related art, even when the reaction time is reduced. Therefore, the disclosed method and polymerization solvent is very useful for a mass production of a hydrocarbon-based electrolyte polymer.
    Type: Grant
    Filed: May 21, 2015
    Date of Patent: March 24, 2020
    Assignees: YOULCHON CHEMICAL CO., LTD., KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Hyoung-Juhn Kim, Jong Hyub Park, Jin Ho Kim, So Young Lee
  • Publication number: 20200061584
    Abstract: Disclosed is a method for preparing a carbon-supported platinum-transition metal alloy nanoparticle catalyst using a stabilizer. According to the method, the transition metal on the nanoparticle surface and the stabilizer are simultaneously removed by treatment with acetic acid. Therefore, the method enables the preparation of a carbon-supported platinum-transition metal alloy nanoparticle catalyst in a simple and environmentally friendly manner compared to conventional methods. The carbon-supported platinum-transition metal alloy nanoparticle catalyst can be applied as a high-performance, highly durable fuel cell catalyst.
    Type: Application
    Filed: February 6, 2019
    Publication date: February 27, 2020
    Applicants: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY, GLOBAL FRONTIER CENTER FOR MULTISCALE ENERGY SYSTEMS
    Inventors: Sung Jong YOO, Sehyun LEE, Hee-Young PARK, Jong Hyun JANG, Jin Young KIM, Hyoung-Juhn KIM, Jea-woo JUNG
  • Publication number: 20200020967
    Abstract: Disclosed is an antioxidant for an electrolyte membrane of fuel cells. The antioxidant may include a support including silicon dioxide and having a nanotube shape, and a metal oxide supported on the support.
    Type: Application
    Filed: December 27, 2018
    Publication date: January 16, 2020
    Inventors: Jae Jun Ko, Bo Ki Hong, In Yu Park, Hyoung Juhn Kim, So Young Lee, Song I Oh
  • Patent number: 10483554
    Abstract: Disclosed is a carbon support for a fuel cell catalyst that supports a metal. The carbon support includes a conductive carbon support and nitrogen atoms doped into the conductive carbon support. Also disclosed is a method for preparing the carbon support. Also disclosed is a catalyst including the carbon support. The catalyst has greatly improved degradation resistance compared to conventional catalysts for fuel cells. In addition, the catalyst is not substantially degraded even when applied to a single cell.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: November 19, 2019
    Assignee: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Jin Young Kim, Sung Jong Yoo, Dirk Henkensmeier, Jong Hyun Jang, Hyoung-Juhn Kim, Yeon Hun Jeong, Nayoung Kim, Chang Won Yoon, Jonghee Han, Suk Woo Nam, Tae Hoon Lim
  • Patent number: 10483552
    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.
    Type: Grant
    Filed: March 2, 2018
    Date of Patent: November 19, 2019
    Assignee: Korea Institute of Science and Technology
    Inventors: Sung Jong Yoo, Jue-hyuk Jang, So Young Lee, Jin Young Kim, Jong Hyun Jang, Hyoung-Juhn Kim, Namgee Jung, Hyun Seo Park
  • Publication number: 20190341624
    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.
    Type: Application
    Filed: February 6, 2019
    Publication date: November 7, 2019
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: 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