Patents by Inventor Jong Hyun Jang

Jong Hyun Jang 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: 20220181646
    Abstract: Disclosed are a catalyst electrode for a fuel cell, a method for fabricating the catalyst electrode, and a fuel cell including the catalyst electrode. The presence of an ionomer-ionomer support composite in the catalyst electrode prevents the porous structure of the catalyst electrode from collapsing due to oxidation of a carbon support to avoid an increase in resistance to gas diffusion and can stably secure proton channels. The presence of carbon materials with high conductivity is effective in preventing the electrical conductivity of the electrode from deterioration resulting from the use of a metal oxide in the ionomer-ionomer support composite and is also effective in suppressing collapse of the porous structure of the electrode to prevent an increase in resistance to gas diffusion in the electrode. Based on these effects, the fuel cell exhibits excellent performance characteristics and prevents its performance from deteriorating during continuous operation.
    Type: Application
    Filed: February 22, 2022
    Publication date: June 9, 2022
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Jong Hyun JANG, Hyun Seo PARK, Hee-Young PARK, Katie Heeyum LIM, Oh Sub KIM, Hyoung-Juhn KIM, Jin Young KIM, Sung Jong YOO, Dirk HENKENSMEIR, So Young LEE
  • Publication number: 20220170168
    Abstract: The present disclosure provides a high-performance electrode for water electrolysis using electrospray, a membrane electrode assembly including the same, a water electrolysis device including the electrode for water electrolysis, and a method for manufacturing the electrode for water electrolysis. The present disclosure is to provide a membrane electrode assembly (MEA) having increased porosity by using electrospray, and to apply the membrane electrode assembly to electrolysis.
    Type: Application
    Filed: November 29, 2021
    Publication date: June 2, 2022
    Inventors: Han Ik JO, Hee-Young PARK, Jong Hyun JANG, Hyun S. PARK, Bora SEO, Hyoung-Juhn KIM, Sung Jong YOO
  • Patent number: 11342565
    Abstract: The present disclosure relates to a fuel cell catalyst and a manufacturing method thereof. The fuel cell catalyst 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 the fuel cell catalyst does not require a solvent because the catalyst including the polydopamine-coated support, wherein from 0.1 to 1% of the hydroxy groups contained in catechol groups of the polydopamine are replaced by halide atoms, in solid phase are simply heat-treated by solid-to-solid dry synthesis which allows manufacturing of a fuel cell catalyst in a short time by eliminating the need for a washing process using a solvent and an extraction process for sampling after the synthesis.
    Type: Grant
    Filed: April 6, 2020
    Date of Patent: May 24, 2022
    Assignee: 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
  • Patent number: 11326264
    Abstract: Provided is a membrane electrode assembly for a proton exchange membrane water electrolyzer, including: an oxygen electrode including an iridium oxide (IrO2) layer which is an electrodeposited oxygen electrode catalyst layer on a titanium (Ti) layer which is a diffusion layer; a hydrogen electrode in which a hydrogen electrode catalyst layer is formed on a diffusion layer; and an electrolyte membrane placed between the oxygen electrode catalyst layer and the hydrogen electrode catalyst layer, in which a portion of the pores of the Ti diffusion layer are filled with an electrolyte of the electrolyte membrane.
    Type: Grant
    Filed: September 5, 2018
    Date of Patent: May 10, 2022
    Assignee: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Jong Hyun Jang, Seunghoe Choe, Youngseung Na, Hye Jin Lee, Hyoung-Juhn Kim, Dirk Henkensmeier, Sung Jong Yoo, Jin Young Kim, So Young Lee, Hyun Seo Park
  • Patent number: 11309560
    Abstract: A method of predicting a life of a membrane electrode assembly (MEA) of a fuel cell for electric power generation includes: deriving an operating condition for accelerated degradation, which is applicable to the fuel cell; operating the fuel cell for a specific time under the derived operating condition for accelerated degradation and under a normal operating condition, and identifying the degree of degradation of the fuel cell under each of the operating conditions; calculating an acceleration multiple based on the degree of degradation identified under the operating condition for accelerated degradation and under the normal operating condition; and predicting the life of the membrane electrode assembly based on the acceleration multiple.
    Type: Grant
    Filed: March 20, 2020
    Date of Patent: April 19, 2022
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION, KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Hyun Bae Dong, Min Kyung Cho, Won Jung Kim, Ju Hae Jung, Jong Hyun Jang, Hyun Seo Park, Myung Su Lim, Jun Young Kim
  • Patent number: 11289711
    Abstract: Disclosed are a catalyst electrode for a fuel cell, a method for fabricating the catalyst electrode, and a fuel cell including the catalyst electrode. The presence of an ionomer-ionomer support composite in the catalyst electrode prevents the porous structure of the catalyst electrode from collapsing due to oxidation of a carbon support to avoid an increase in resistance to gas diffusion and can stably secure proton channels. The presence of carbon materials with high conductivity is effective in preventing the electrical conductivity of the electrode from deterioration resulting from the use of a metal oxide in the ionomer-ionomer support composite and is also effective in suppressing collapse of the porous structure of the electrode to prevent an increase in resistance to gas diffusion in the electrode. Based on these effects, the fuel cell exhibits excellent performance characteristics and prevents its performance from deteriorating during continuous operation.
    Type: Grant
    Filed: July 21, 2020
    Date of Patent: March 29, 2022
    Assignee: Korea Institute of Science and Technology
    Inventors: Jong Hyun Jang, Hyun Seo Park, Hee-Young Park, Katie Heeyum Lim, Oh Sub Kim, Hyoung-Juhn Kim, Jin Young Kim, Sung Jong Yoo, Dirk Henkensmeir, So Young Lee
  • Publication number: 20220042185
    Abstract: The present disclosure relates to a catalyst for electrochemical synthesis of ammonia, which includes a metal sulfide, a method for preparing the same and a method for regenerating the same.
    Type: Application
    Filed: June 9, 2021
    Publication date: February 10, 2022
    Inventors: Hyun S. PARK, Sung Jong YOO, Jong Hyun JANG, Hee-Young PARK, Bora SEO, Jin Young KIM, Hyoung-Juhn KIM, So Young LEE, Jihyun CHOI, Jimin KONG, Hee Soo KIM, Gyu Seong YI
  • Publication number: 20220045346
    Abstract: The present disclosure relates to a polyarylene ether-based polymer for an electrolyte membrane of a fuel cell, represented by the following Chemical Formula 1. When the polyarylene ether-based polymer for an electrolyte membrane of a fuel cell is applied to the manufacture of a membrane-electrode assembly through a decal process, the hot pressing temperature may be controlled to about 120° C. so as to conform to a low glass transition temperature. Therefore, it is possible to solve the problems of deterioration of an electrolyte membrane or incomplete transfer of an electrode catalyst layer, caused by the high hot pressing temperature applied in the case of the conventional hydrocarbon-based polymer material.
    Type: Application
    Filed: November 13, 2020
    Publication date: February 10, 2022
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Hyoung-Juhn KIM, Jieun CHOI, So Young LEE, Hee-Young PARK, Sung Jong YOO, Hyun Seo PARK, Jing Young KIM, Jong Hyun JANG, Bora SEO
  • Publication number: 20220021015
    Abstract: Disclosed is an antioxidant for a polymer electrolyte membrane of a fuel cell including cerium hydrogen phosphate (CeHPO4). The presence of cerium hydrogen phosphate in the antioxidant enhances the dissolution stability of cerium and improves the ability to capture water, leading to an increase in proton conductivity. In addition, the cerium hydrogen phosphate has a crystal structure composed of smaller cerium particles. This crystal structure greatly improves the ability of the antioxidant to prevent oxidation of the electrolyte membrane. Also disclosed are an electrolyte membrane including the antioxidant, a fuel cell including the electrolyte membrane, a method for preparing the antioxidant, a method for producing the electrolyte membrane, and a method for fabricating the fuel cell.
    Type: Application
    Filed: September 8, 2020
    Publication date: January 20, 2022
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: So Young LEE, Seung Ju LEE, Hyun Seo PARK, Jin Young KIM, Sung Jong YOO, Jong Hyun JANG, Hyoung-Juhn KIM, Hee-Young PARK
  • Patent number: 11214497
    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: Grant
    Filed: August 7, 2019
    Date of Patent: January 4, 2022
    Assignees: 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
  • Patent number: 11173481
    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: Grant
    Filed: August 7, 2019
    Date of Patent: November 16, 2021
    Assignees: 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
  • Publication number: 20210332486
    Abstract: The present disclosure discloses an asymmetric electrolyte membrane, a membrane electrode assembly including the same, a water electrolysis apparatus including the same and a method for manufacturing the same. More particularly, it discloses an asymmetric electrolyte membrane having a porous layer and a dense layer at the same time, a membrane electrode assembly including the same, a water electrolysis apparatus including the same and a method for manufacturing the same.
    Type: Application
    Filed: September 30, 2020
    Publication date: October 28, 2021
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: So Young LEE, Hyoung-Juhn KIM, Sae Yane BAEK, Taekyung LEE, Sung Jong YOO, Jong Hyun JANG, Hee-Young PARK, Jin Young KIM, Hyun S. PARK
  • Publication number: 20210320303
    Abstract: The present disclosure relates to a styrene-based copolymer for an electrode binder of a solid alkaline fuel cell, represented by the following Chemical Formula 1, an electrode binder including the same, and a membrane electrode assembly including the electrode binder. The electrode binder for a solid alkaline fuel cell is obtained by dispersing the styrene-based copolymer for an electrode binder in a mixed solvent of alcohol with water. Thus, even when coating electrode catalyst slurry including the electrode binder directly on an electrolyte membrane, the electrolyte membrane is not damaged so that the quality of a solid alkaline fuel cell using the same may be improved. wherein x is an integer of 2-10, and each of m and n represents the number of repeating units.
    Type: Application
    Filed: June 15, 2020
    Publication date: October 14, 2021
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Hyoung-Juhn KIM, Ji Eon CHAE, So Young LEE, Hee-Young PARK, Jin Young KIM, Jong Hyun JANG, Hyun Seo PARK, Sung Jong YOO
  • Patent number: 11127967
    Abstract: Disclosed is a high temperature-type unitized regenerative fuel cell using water vapor, which exhibits high hydrogen (H2) production efficiency and superior power generation ability.
    Type: Grant
    Filed: March 10, 2020
    Date of Patent: September 21, 2021
    Assignee: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Hyun Seo Park, Ahyoun Lim, Ju Sung Lee, Hee-Young Park, So Young Lee, Jin Young Kim, Sung Jong Yoo, Dirk Henkensmeier, Jong Hyun Jang, Hyoung-Juhn Kim
  • Publication number: 20210273240
    Abstract: Disclosed are a catalyst electrode for a fuel cell, a method for fabricating the catalyst electrode, and a fuel cell including the catalyst electrode. The presence of an ionomer-ionomer support composite in the catalyst electrode prevents the porous structure of the catalyst electrode from collapsing due to oxidation of a carbon support to avoid an increase in resistance to gas diffusion and can stably secure proton channels. The presence of carbon materials with high conductivity is effective in preventing the electrical conductivity of the electrode from deterioration resulting from the use of a metal oxide in the ionomer-ionomer support composite and is also effective in suppressing collapse of the porous structure of the electrode to prevent an increase in resistance to gas diffusion in the electrode. Based on these effects, the fuel cell exhibits excellent performance characteristics and prevents its performance from deteriorating during continuous operation.
    Type: Application
    Filed: July 21, 2020
    Publication date: September 2, 2021
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Jong Hyun JANG, Hyun Seo PARK, Hee-Young PARK, Katie Heeyum LIM, Oh Sub KIM, Hyoung-Juhn KIM, Jin Young KIM, Sung Jong YOO, Dirk HENKENSMEIR, So Young LEE
  • Patent number: 11090634
    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: Grant
    Filed: February 6, 2019
    Date of Patent: August 17, 2021
    Assignees: 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
  • Patent number: 11056693
    Abstract: An aryne-grafted carbon-supported catalyst and a method of preparing the same, and particularly to a carbon-supported catalyst having an organic anchor formed on the surface of a carbon support through aryne cycloaddition in order to improve the durability of a fuel cell catalyst, and a method of preparing the same. It is possible to form a covalent bonding selectively to a carbon support of a fuel cell catalyst in a solution by using 2-(trimethylsilyl)phenyl triflate or the like. In addition, the formed anchor prevents adhesion of metal catalyst particles of a fuel cell, and thus improves the durability of a fuel cell catalyst.
    Type: Grant
    Filed: January 24, 2018
    Date of Patent: July 6, 2021
    Assignee: Korea Institute of Science and Technology
    Inventors: Jong Hyun Jang, Hee-Young Park, Hyoung-Juhn Kim, Dirk Henkensmeier, Sung Jong Yoo, Jin Young Kim, So Young Lee, Hyun Seo Park
  • Publication number: 20210159512
    Abstract: The present disclosure relates to a method for preparing a metal single-atom catalyst for a fuel cell. The method for preparing a metal single-atom catalyst uses a relatively lower amount of chemical substances as compared to the conventional methods and thus is eco-friendly, uses no liquid through the whole process and avoids a need for additional steps for separating and/or washing the catalyst after its synthesis, thereby allowing simplification of the process, and can produce a single-atom catalyst at low cost. In addition, unlike the conventional methods having a limitation in metallic materials, the method can be applied in common regardless of types of metals, and thus is significantly advantageous in that it can be applied widely to obtain various types of metal single-atom catalysts. Further, in the method for preparing a metal single-atom catalyst, metal atoms totally participate in the reaction. Thus, the method can minimize the usage of metal to provide high cost-efficiency.
    Type: Application
    Filed: February 26, 2020
    Publication date: May 27, 2021
    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
  • Publication number: 20210119237
    Abstract: The present disclosure relates to a polymer electrolyte membrane for medium and high temperature, a preparation method thereof and a high-temperature polymer electrolyte membrane fuel cell including the same, more particularly to a technology of preparing a composite membrane including an inorganic phosphate nanofiber incorporated into a phosphoric acid-doped polybenzimidazole (PBI) polymer membrane by adding an inorganic precursor capable of forming a nanofiber in a phosphoric acid solution when preparing phosphoric acid-doped polybenzimidazole and using the same as a high-temperature polymer electrolyte membrane which is thermally stable even at high temperatures of 200-300° C. without degradation of phosphoric acid and has high ion conductivity.
    Type: Application
    Filed: April 27, 2020
    Publication date: April 22, 2021
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: So Young LEE, Seung Ju LEE, Min Jae LEE, Hyun Seo PARK, Jong Hyun JANG, Hyoung-Juhn KIM, Suk Woo NAM, Young Suk JO, Yeong Cheon KIM
  • Patent number: 10975476
    Abstract: The present disclosure relates to an IrO2 electrodeposited porous titanium composite layer of a polymer electrolyte membrane water electrolysis apparatus serving as both a diffusion layer and an oxygen electrode, the apparatus including: a porous titanium (Ti) layer; and an electrodeposited iridium oxide (IrO2) layer on the porous Ti layer. The IrO2 layer may be uniformly deposited on a porous Ti layer through an electrolysis process, and the electrodeposited IrO2 layer may play multiple roles as not only a catalyst layer toward oxygen evolution reaction (OER) on the surface of the Ti layer, but also a corrosion-protection layer which prevents an inner Ti layer from corrosion.
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: April 13, 2021
    Assignee: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Jong Hyun Jang, Seunghoe Choe, Youngseung Na, Hye Jin Lee, Ahyoun Lim, Hyoung-Juhn Kim, Dirk Henkensmeier, Sung Jong Yoo, Jin Young Kim, So Young Lee, Hyun Seo Park