Patents by Inventor Nak Hyun Kwon
Nak Hyun Kwon 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).
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Patent number: 9293780Abstract: The present invention provides sulfonated poly(phenylene sulfide sulfone nitrile) and a polymer electrolyte membrane thereof. In particular, the present invention provides sulfonated poly(phenylene sulfide sulfone nitrile) having a triple bond at its both ends and a polymer electrolyte membrane with superior mechanical properties prepared by heating sulfonated poly(phenylene sulfide sulfone nitrile) and forming cross-links between ends of sulfonated poly(phenylene sulfide sulfone nitrile).Type: GrantFiled: October 26, 2012Date of Patent: March 22, 2016Assignees: Hyundai Motor Company, IUCF-HYU (Industry-University Cooperation Foundation Hanyang University)Inventors: Young Moo Lee, So Young Lee, Dong Won Shin, Na Rae Kang, Young Taek Kim, Inchul Hwang, Nak Hyun Kwon
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Patent number: 9203093Abstract: The present invention provides an electrode for a polymer electrolyte membrane fuel cell. In one embodiment, a planar nanoporous or microporous metal foam or metal aerogel structure is provided, from which an electrode with a catalyst layer integrally formed by fixing a catalyst in the metal foam or metal aerogel is formed.Type: GrantFiled: July 6, 2011Date of Patent: December 1, 2015Assignees: Hyundai Motor Company, SNU R&DB FoundationInventors: Nak Hyun Kwon, In Chul Hwang, Jae Seung Lee, Bum Wook Roh, Yung Eun Sung, Ju Wan Lim, Yoon Hwan Cho, Nam Gee Jung, Hee Man Choe, Yong Hun Cho
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Patent number: 9123965Abstract: The present invention provides a method of synthesizing a nano-sized transition metal catalyst on a carbon support, including dissolving a stabilizer in ethanol thus preparing a mixture solution, adding a support to the mixture solution thus preparing a dispersion solution, dissolving a transition metal precursor in ethanol thus preparing a precursor solution, mixing the precursor solution with the dispersion solution with stirring, and then performing reduction, thus preparing the nano-sized transition metal catalyst. This method enables the synthesis of transition metal nanoparticles supported on carbon powder having a narrow particle size distribution and a wide degree of dispersion through a simple process, and is thus usefully applied to the formation of an electrode material or the like of a fuel cell.Type: GrantFiled: May 6, 2010Date of Patent: September 1, 2015Assignees: Hyundai Motor Company, SNU R&DB FoundationInventors: Nak Hyun Kwon, Inchul Hwang, Jae Seung Lee, Yung-Eun Sung, Tae-Yeol Jeon, Sung Jong Yoo, Kug-Seung Lee, Yong-Hun Cho
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Publication number: 20140329162Abstract: A membrane electrode assembly for a fuel cell is provided that includes a membrane, electrodes on both sides of the membrane, respectively, and sub-gaskets bonded to the edges of the electrodes, respectively. In particular, the sub-gasket may be bonded to the membrane at a predetermined distance from the edge of the electrode.Type: ApplicationFiled: December 10, 2013Publication date: November 6, 2014Applicant: HYUNDAI MOTOR COMPANYInventors: Young Taek Kim, Inchul Hwang, Nak Hyun Kwon, Ju Ho Lee, Sang-Uk Kim, Jin-Young Kim, Dong Il Kim, Chang-Hyeong Lee
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Patent number: 8853285Abstract: The present disclosure provides a polymer electrolyte membrane chemically bonded with an ionic liquid. More particularly, the present disclosure provides a polymer electrolyte membrane chemically bonded with an ionic liquid by reacting the ionic liquid with a novel polymer chain terminal. The polymer electrolyte membrane described herein has a high hydrogen ionic conductivity, even in a high-temperature and anhydrous environment. Additionally, the membrane displays electro-chemical and thermal stability. Moreover, the polymer electrolyte membrane may also be applied to a high-temperature and dry-out bio fuel cell.Type: GrantFiled: November 28, 2012Date of Patent: October 7, 2014Assignees: Hyundai Motor Company, Postech Academy-Industry FoundationInventors: Young Teak Kim, In Chul Hwang, Nak Hyun Kwon, Moon Jeong Park, Jae Wan Hong
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Patent number: 8785060Abstract: The present invention relates to a method of manufacturing a multilayer electrolyte reinforced composite membrane that is mechanically stable and cost-efficient and has superior hydrogen ion conductivity even when exposed to low humidity and high temperature conditions. The method of the invention involves a stretching process and a series of drying steps to provide a hydrogen ion exchange membrane of a three-layer structure comprising: a matrix layer of a hydrogen ion exchange membrane impregnated and stretched with a polymer electrolyte sandwiched between two electrolyte coated layers.Type: GrantFiled: December 29, 2006Date of Patent: July 22, 2014Assignee: Hyundai Motor CompanyInventor: Nak Hyun Kwon
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Publication number: 20140024729Abstract: The present disclosure provides a polymer electrolyte membrane chemically bonded with an ionic liquid. More particularly, the present disclosure provides a polymer electrolyte membrane chemically bonded with an ionic liquid by reacting the ionic liquid with a novel polymer chain terminal. The polymer electrolyte membrane described herein has a high hydrogen ionic conductivity, even in a high-temperature and anhydrous environment. Additionally, the membrane displays electro-chemical and thermal stability. Moreover, the polymer electrolyte membrane may also be applied to a high-temperature and dry-out bio fuel cell.Type: ApplicationFiled: November 28, 2012Publication date: January 23, 2014Applicants: POSTECH ACADEMY-INDUSTRY FOUNDATION, HYUNDAI MOTOR COMPANYInventors: Young Taek Kim, In Chul Hwang, Nak Hyun Kwon, Moon Jeong Park, Jae Wan Hong
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Publication number: 20130266890Abstract: The present invention provides sulfonated poly(phenylene sulfide sulfone nitrile) and a polymer electrolyte membrane thereof. In particular, the present invention provides sulfonated poly(phenylene sulfide sulfone nitrile) having a triple bond at its both ends and a polymer electrolyte membrane with superior mechanical properties prepared by heating sulfonated poly(phenylene sulfide sulfone nitrile) and forming cross-links between ends of sulfonated poly(phenylene sulfide sulfone nitrile).Type: ApplicationFiled: October 26, 2012Publication date: October 10, 2013Applicants: IUCF-HYU (Industry-University Cooperation Foundation Hanyang University), HYUNDAI MOTOR COMPANYInventors: Young Moo Lee, So Young Lee, Dong Won Shin, Na Rae Kang, Young Taek Kim, Inchul Hwang, Nak Hyun Kwon
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Patent number: 8524420Abstract: Disclosed is a method for preparing nickel or palladium nanoparticles supported on a carbon support. To a mixture solution wherein a stabilizer is dissolved in 1,2-propanediol, a carbon support is added to prepare a dispersion. Then, a precursor solution wherein a nickel or palladium precursor dissolved in 1,2-propanediol is mixed therewith and stirred. Then, nickel or palladium nanoparticles supported on the carbon support are prepared by reduction. The disclosed method for preparing nickel or palladium nanoparticles supported on a carbon support allows preparation of nanoparticles with narrow particle size distribution and good dispersibility through a simple process and the resulting nickel or palladium nanoparticles may be usefully applied, for example, as electrode materials of fuel cells.Type: GrantFiled: May 13, 2010Date of Patent: September 3, 2013Assignees: Hyundai Motor Company, SNU & R&DB FoundationInventors: Nak Hyun Kwon, Jae Seung Lee, Bumwook Roh, Yung-Eun Sung, Tae-Yeol Jeon, Hee-Young Park, Ju Wan Lim, Young-Hoon Chung
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Patent number: 8470955Abstract: The present invention relates to a poly(arylene ether) copolymer having a cation exchange group, a method for manufacturing the same, and use thereof. The poly(arylene ether) copolymer having the cation exchange group according to the present invention has excellent physical characteristics, ion exchanging capacity, metal ion adsorption capacity and a processability, and thus can be molded in various shapes and can be extensively applied to various fields such as recovering of organic metal, air purification, catalysts, water treatment, medical fields and separating of proteins.Type: GrantFiled: November 30, 2011Date of Patent: June 25, 2013Assignee: Hyundai Motor CompanyInventors: Inchul Hwang, Nak Hyun Kwon, Young Taek Kim, Dong Il Kim, Ju Ho Lee
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Patent number: 8420767Abstract: Disclosed herein is a polyarylene-based polymer, a preparation method for the same, and a polymer electrolyte membrane for fuel cell using the polymer. The polyarylene-based polymer, which is designed to have long side chains of a hydrophilic moiety and dense sulfonic acid groups, may improve the formation of ion channels when fabricating a polymer membrane and also ensures good chemical stability of the hydrophilic moiety and good dimensional stability against water. Further, the preparation method of the present invention simplifies production of the polymer, and polymer electrolyte membranes using the polymer exhibits improved properties as a polymer electrolyte membrane for a fuel cell, such as high proton conductivity, even under an atmosphere of low water uptake, and good dimensional stability against a long-term exposure to water.Type: GrantFiled: December 9, 2011Date of Patent: April 16, 2013Assignee: Hyundai Motor CompanyInventors: Inchul Hwang, Nak Hyun Kwon, Young Taek Kim, Dong Il Kim, Ju Ho Lee, Jang-Bae Son
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Patent number: 8349905Abstract: Disclosed herein is a proton-conducting polymer and uses thereof and, more particularly, a hydrocarbon-based proton-conducting polymer derived from a monomer having a multi-naphthyl group and comprising a plurality of acid groups on the side chain of the repeating unit, an electrolyte membrane comprising the polymer, a membrane-electrode assembly comprising the electrolyte membrane, and a fuel cell comprising the membrane-electrode assembly.Type: GrantFiled: December 9, 2011Date of Patent: January 8, 2013Assignee: Hyundai Motor CompanyInventors: Inchul Hwang, Nak Hyun Kwon, Young Taek Kim, Dong Il Kim, Ju Ho Lee, Jang-Bae Son
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Publication number: 20120309857Abstract: Disclosed herein is a polyarylene-based polymer, a preparation method for the same, and a polymer electrolyte membrane for fuel cell using the polymer. The polyarylene-based polymer, which is designed to have long side chains of a hydrophilic moiety and dense sulfonic acid groups, may improve the formation of ion channels when fabricating a polymer membrane and also ensures good chemical stability of the hydrophilic moiety and good dimensional stability against water. Further, the preparation method of the present invention simplifies production of the polymer, and polymer electrolyte membranes using the polymer exhibits improved properties as a polymer electrolyte membrane for a fuel cell, such as high proton conductivity, even under an atmosphere of low water uptake, and good dimensional stability against a long-term exposure to water.Type: ApplicationFiled: December 9, 2011Publication date: December 6, 2012Applicant: HYUNDAI MOTOR COMPANYInventors: Inchul Hwang, Nak Hyun Kwon, Young Taek Kim, Dong Il Kim, Ju Ho Lee, Jang-Bae Son
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Patent number: 8288500Abstract: The present invention relates to a sulfonated poly(arylene ether) copolymer, a manufacturing method thereof and a polymer electrolyte membrane for fuel cell using the same.Type: GrantFiled: November 2, 2010Date of Patent: October 16, 2012Assignee: Hyundai Motor CompanyInventors: Ju Ho Lee, Dong Ii Kim, Nak Hyun Kwon, Inchul Hwang
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Publication number: 20120244457Abstract: The present invention provides an electrode for a polymer electrolyte membrane fuel cell. In one embodiment, a planar nanoporous or microporous metal foam or metal aerogel structure is provided, from which an electrode with a catalyst layer integrally formed by fixing a catalyst in the metal foam or metal aerogel is formed.Type: ApplicationFiled: July 6, 2011Publication date: September 27, 2012Applicants: SNU R&DB FOUNDATION, HYUNDAI MOTOR COMPANYInventors: Nak Hyun Kwon, In Chul Hwang, Jae Seung Lee, Bum Wook Roh, Yung Eun Sung, Ju Wan Lim, Yoon Hwan Cho, Nam Gee Jung, Hee Man Choe, Yong Hun Cho
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Publication number: 20120148935Abstract: The present invention provides a method of fabricating a membrane-electrode assembly for a polymer electrolyte membrane fuel cell, and a membrane-electrode assembly and a polymer electrolyte membrane fuel cell formed thereby. In the method, a 3-layered membrane-electrode assembly is formed in which a catalyst electrode layer is disposed on both surfaces of a polymer electrolyte membrane. A sub-gasket having an opening therein and having a primer layer formed on one surface thereof is formed, and is attached on both surfaces of the 3-layered membrane-electrode assembly such that the surface of the sub-gasket having the primer layer formed thereon faces the outside (is exposed) and the catalyst electrode layer is exposed through the opening.Type: ApplicationFiled: June 3, 2011Publication date: June 14, 2012Applicants: KIA MOTORS CORPORATION, HYUNDAI MOTOR COMPANYInventors: Hoon Hui Lee, Nak Hyun Kwon, Ji Seok Hwang
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Publication number: 20120142790Abstract: The present invention relates to a poly(arylene ether) copolymer having a cation exchange group, a method for manufacturing the same, and use thereof. The poly(arylene ether) copolymer having the cation exchange group according to the present invention has excellent physical characteristics, ion exchanging capacity, metal ion adsorption capacity and a processability, and thus can be molded in various shapes and can be extensively applied to various fields such as recovering of organic metal, air purification, catalysts, water treatment, medical fields and separating of proteins.Type: ApplicationFiled: November 30, 2011Publication date: June 7, 2012Applicant: HYUNDAI MOTOR COMPANYInventors: Inchul Hwang, Nak Hyun Kwon, Young Taek Kim, Dong Il Kim, Ju Ho Lee
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Patent number: 8178622Abstract: The present invention provides an amphiphilic block copolymer, a method for manufacturing the same, and a fuel cell membrane using the same. According to preferred embodiments, the amphiphilic block copolymer may contain poly(arylene sulfone ether ketone) (PSEK) as a hydrophobic component and poly(sulfonated styrene-co-acrylonitrile) (PSSAN) as a hydrophilic component. According to other preferred embodiments, polymer electrolyte membrane manufactured using the amphiphilic block copolymer has certain advantages in that the hydrogen ion conductivity is not reduced even at a high temperature of more than 100° C. but is rather increased and the thermal and chemical dimensional stability is excellent.Type: GrantFiled: September 20, 2010Date of Patent: May 15, 2012Assignees: Hyundai Motor Company, SNU R&DB FoundationInventors: Won Ho Jo, Tae-Ann Kim, In Chul Hwang, Nak Hyun Kwon
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Publication number: 20120028790Abstract: Provided are a non-platinum oxygen reduction catalyst for a polymer electrolyte membrane fuel cell and a method for preparing the same. More particularly, an oxygen reduction catalyst in which chelated cobalt is impregnated on a conductive polymer coated on a carbon support and a method for preparing the oxygen reduction catalyst by coating a conductive polymer on a carbon support, impregnating chelated cobalt on the conductive polymer and then treating the same with heat and an acid are disclosed. The platinum-free oxygen reduction catalyst of the present invention has superior oxygen reduction activity and durability with high proportion of pyridinic and graphitic nitrogens on the catalyst surface, and thus can be usefully applied for a polymer electrolyte membrane fuel cell.Type: ApplicationFiled: November 29, 2010Publication date: February 2, 2012Applicants: INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YOUNSEI UNIVERSITY, HYUNDAI MOTOR COMPANYInventors: Bum Wook Roh, Il Hee Cho, Nak Hyun Kwon, Han Sung Kim, Hyung-Suk Oh
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Publication number: 20120016043Abstract: The present invention relates to a poly(arylene ether) copolymer having an ion exchange group, particularly a positive ion exchange group, a method for manufacturing the same, and use thereof. In the poly(arylene ether) copolymer having the ion exchange group according to the present invention, physical characteristics, ion exchanging ability, metal ion adsorption ability and a proccessability are excellent, and thus the copolymer can be molded in various shapes and can be extensively applied to various fields such as recovering of organic metal, air purification, catalysts, water treatment, medical fields and separating of proteins.Type: ApplicationFiled: December 6, 2010Publication date: January 19, 2012Applicant: HYUNDAI MOTOR COMPANYInventors: Inchul Hwang, Nak Hyun Kwon, Young Taek Kim, Dong Il Kim, Ju Ho Lee