Patents by Inventor Seung-Hee Woo
Seung-Hee Woo 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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Publication number: 20230420696Abstract: The present disclosure relates to a method for manufacturing core-shell particles using carbon monoxide, and more particularly, to a method for manufacturing core-shell particles, the method of which a simple and fast one-pot reaction enables particle manufacturing to reduce process costs, facilitate scale-up, change various types of core and shell metals, and form a multi-layered shell by including the steps of adsorbing carbon monoxide on a transition metal for a core, and reacting carbon monoxide adsorbed on the surface of the transition metal for the core, a metal precursor for a shell, and a solvent to form particles with a core-shell structure having a reduced metal shell layer formed on a transition metal core.Type: ApplicationFiled: September 12, 2023Publication date: December 28, 2023Applicant: KOREA INSTITUTE OF ENERGY RESEARCHInventors: Gu-gon PARK, Eun Jik LEE, Kyunghee KIM, Sung-dae YIM, Seok-hee PARK, Min-ji KIM, Young-jun SOHN, Byungchan BAE, Seung-gon KIM, Dongwon SHIN, Hwanyeong OH, Seung Hee WOO, So Jeong LEE, Hyejin LEE, Yoon Young CHOI, Won-yong LEE, Tae-hyun YANG
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Publication number: 20230402619Abstract: A method for preparing a platinum alloy catalyst using an oxide coating according to an embodiment of the present disclosure comprises: a first step of preparing a dispersion by mixing a commercial platinum catalyst and a transition metal precursor with a solvent; a second step of preparing a catalyst by putting an ultrasonic tip into the dispersion prepared through the first step and performing an ultrasonic process; a third step of performing a primary heat treatment process on the catalyst prepared through the second step; a fourth step of performing an acid treatment process on the catalyst that has undergone the primary heat treatment process through the third step; and a fifth step of preparing a platinum alloy catalyst by performing a secondary heat treatment process on the catalyst that has undergone the acid treatment process through the fourth step.Type: ApplicationFiled: March 23, 2023Publication date: December 14, 2023Applicant: KOREA INSTITUTE OF ENERGY RESEARCHInventors: Eun Jik LEE, Gu-gon PARK, DongJe LEE, Sung-dae YIM, Seok-hee PARK, Min-jin KIM, Young-jun SOHN, Byungchan BAE, Seung-gon KIM, Dongwon SHIN, Hwanyeong OH, Seung Hee WOO, So Jeong LEE, Hyejin LEE, Yoon Young CHOI, Yun Sik KANG, Won-yong LEE, Tae-hyun YANG
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Publication number: 20230378480Abstract: The manufacturing method of a palladium transition metal core-based core-shell electrode catalyst according to an exemplary embodiment of the present disclosure includes a first step of preparing a slurry by irradiating ultrasonic wave to a dispersion solution including a solvent, a platinum precursor, a palladium precursor, a carbon support, and a transition metal precursor, a second step of preparing a solid material by filtering, washing, and drying the slurry prepared in the first step, and a third step of preparing a core-shell electrode catalyst by thermally treating the solid prepared in the second step in a specific gas atmosphere.Type: ApplicationFiled: January 31, 2023Publication date: November 23, 2023Applicant: KOREA INSTITUTE OF ENERGY RESEARCHInventors: Gu-gon PARK, Eunjik LEE, Ik Sung LIM, Sung-Dae YIM, Seok-Hee PARK, Minjin KIM, Young-Jun SOHN, Byungchan BAE, Seung-gon KIM, Dongwon SHIN, Hwanyeong OH, Seung Hee WOO, So Jeong LEE, Hyejin LEE, Yoon Young CHOI, Yun Sik KANG, Won-yong LEE, Tae-hyun YANG
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Patent number: 11791475Abstract: The present disclosure relates to a method for manufacturing core-shell particles using carbon monoxide, and more particularly, to a method for manufacturing core-shell particles, the method of which a simple and fast one-pot reaction enables particle manufacturing to reduce process costs, facilitate scale-up, change various types of core and shell metals, and form a multi-layered shell by including the steps of adsorbing carbon monoxide on a transition metal for a core, and reacting carbon monoxide adsorbed on the surface of the transition metal for the core, a metal precursor for a shell, and a solvent to form particles with a core-shell structure having a reduced metal shell layer formed on a transition metal core.Type: GrantFiled: September 3, 2021Date of Patent: October 17, 2023Assignee: Korea Institute of Energy ResearchInventors: Gu-Gon Park, Eun Jik Lee, Kyunghee Kim, Sung-dae Yim, Seok-hee Park, Min-ji Kim, Young-jun Sohn, Byungchan Bae, Seung-gon Kim, Dongwon Shin, Hwanyeong Oh, Seung Hee Woo, So Jeong Lee, Hyejin Lee, Yoon Young Choi, Won-Yong Lee, Tae-hyun Yang
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Publication number: 20230187659Abstract: A modeling method for designing a flow field of a fuel cell including a membrane electrode assembly including a catalyst layer and an electrolyte membrane, a gas diffusion layer, a flow field, and a bipolar plate includes modeling using a numerical model derived from a governing equation including a mass conservation equation of species, a fluid momentum in a porous media, and a modified Butler-Volmer's equation and outputting an oxygen diffusion characteristic in a catalyst layer from the modeling result.Type: ApplicationFiled: December 13, 2022Publication date: June 15, 2023Applicant: KOREA INSTITUTE OF ENERGY RESEARCHInventors: Min Jin KIM, Young Jun SOHN, Hwan Yeong OH, Yoon Young CHOI, Seung Gon KIM, Won Yong LEE, Tae Hyun YANG, Seok Hee PARK, Sung Dae YIM, Seung Hee WOO, Yun Sik KANG, Gu Gon PARK, Eun Jik LEE, So Jeong LEE, Byung Chan BAE, Dong Won SHIN, Hye Jin LEE, Dong Hwan PARK
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Patent number: 11489179Abstract: A hierarchical fault classification method for a fuel cell system, a multi-stage fault diagnosis method therefor, and a fault diagnosis device therefor are disclosed. The fuel cell system is divided into a subsystem, a component, and an element step by step. The multi-stage fault diagnosis method includes detecting a subsystem, a fault of which occurs, in the fuel cell system composed of a plurality of subsystems and detecting an upper-level component, which causes the fault, among upper-level components included in the subsystem, the fault of which occurs, using measurement data and a control signal.Type: GrantFiled: January 30, 2020Date of Patent: November 1, 2022Assignee: Korea Institute of Energy ResearchInventors: Won Yong Lee, Hwan Yeong Oh, Min Jin Kim, Seok Hee Park, Gu Gon Park, Tae Hyun Yang, Sung Dae Yim, Young Jun Sohn, Byung Chan Bae, Seung Gon Kim, Dong Won Shin, Seung Hee Woo, So Jeong Lee, Hye Jin Lee, Yoon Young Choi
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Patent number: 11376664Abstract: The present disclosure is related to a method to control sizes of core-shell nanoparticles comprising the steps of: manufacturing slurry by irradiating ultrasonic waves to a dispersion solution containing a reducing solvent, a carbon support, a transition metal precursor and a precious metal precursor; manufacturing a solid by filtering the manufactured slurry, followed by washing and drying; and manufacturing a nanoparticle of a transition metal core and a platinum shell by heat-treating the dried solid at a temperature of 450 to 900° C. and a pressure of 1 to 90 bar for 0.5 to 10 hours under N2 atmosphere.Type: GrantFiled: June 30, 2020Date of Patent: July 5, 2022Assignee: KOREA INSTITUTE OF ENERGY RESEARCHInventors: Gu-gon Park, Hyun-uk Park, Won-yong Lee, Sung-dae Yim, Min-jin Kim, Young-jun Sohn, Byungchan Bae, Seung-gon Kim, Dongwon Shin, Hwanyeong Oh, Seung Hee Woo, So Jeong Lee, Hyejin Lee, Yoon Young Choi, Seok-hee Park, Tae-hyun Yang
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Publication number: 20220077471Abstract: The present disclosure relates to a method for manufacturing core-shell particles using carbon monoxide, and more particularly, to a method for manufacturing core-shell particles, the method of which a simple and fast one-pot reaction enables particle manufacturing to reduce process costs, facilitate scale-up, change various types of core and shell metals, and form a multi-layered shell by including the steps of adsorbing carbon monoxide on a transition metal for a core, and reacting carbon monoxide adsorbed on the surface of the transition metal for the core, a metal precursor for a shell, and a solvent to form particles with a core-shell structure having a reduced metal shell layer formed on a transition metal core.Type: ApplicationFiled: September 3, 2021Publication date: March 10, 2022Applicant: KOREA INSTITUTE OF ENERGY RESEARCHInventors: Gu-gon PARK, Eun Jik LEE, Kyunghee KIM, Sung-dae YIM, Seok-hee PARK, Min-ji KIM, Young-jun SOHN, Byungchan BAE, Seung-gon KIM, Dongwon SHIN, Hwanyeong OH, Seung Hee WOO, So Jeong LEE, Hyejin LEE, Yoon Young CHOI, Won-yong LEE, Tae-hyun YANG
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Publication number: 20210170488Abstract: The present disclosure is related to a method to control sizes of core-shell nanoparticles comprising the steps of: manufacturing slurry by irradiating ultrasonic waves to a dispersion solution containing a reducing solvent, a carbon support, a transition metal precursor and a precious metal precursor; manufacturing a solid by filtering the manufactured slurry, followed by washing and drying; and manufacturing a nanoparticle of a transition metal core and a platinum shell by heat-treating the dried solid at a temperature of 450 to 900° C. and a pressure of 1 to 90 bar for 0.5 to 10 hours under N2 atmosphere.Type: ApplicationFiled: June 30, 2020Publication date: June 10, 2021Applicant: KOREA INSTITUTE OF ENERGY RESEARCHInventors: Gu-gon PARK, Hyun-uk PARK, Won-yong LEE, Sung-dae YIM, Min-jin KIM, Young-jun SOHN, Byungchan BAE, Seung-gon KIM, Dongwon SHIN, Hwanyeong OH, Seung Hee WOO, So Jeong LEE, Hyejin LEE, Yoon Young CHOI, Seok-hee PARK, Tae-hyun YANG
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Publication number: 20210075040Abstract: A hierarchical fault classification method for a fuel cell system, a multi-stage fault diagnosis method therefor, and a fault diagnosis device therefor are disclosed. The fuel cell system is divided into a subsystem, a component, and an element step by step. The multi-stage fault diagnosis method includes detecting a subsystem, a fault of which occurs, in the fuel cell system composed of a plurality of subsystems and detecting an upper-level component, which causes the fault, among upper-level components included in the subsystem, the fault of which occurs, using measurement data and a control signal.Type: ApplicationFiled: January 30, 2020Publication date: March 11, 2021Applicant: KOREA INSTITUTE OF ENERGY RESEARCHInventors: Won Yong LEE, Hwan Yeong OH, Min Jin KIM, Seok Hee PARK, Gu Gon PARK, Tae Hyun YANG, Sung Dae YIM, Young Jun SOHN, Byung Chan BAE, Seung Gon KIM, Dong Won SHIN, Seung Hee WOO, So Jeong LEE, Hye Jin LEE, Yoon Young CHOI
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Patent number: 10930936Abstract: An apparatus and a method for manufacturing a continuous reactor type core-shell catalyst electrode, which may manufacture a large amount of continuous reactor type core-shell catalyst electrodes by improving coating efficiency of shell metal by using reaction chambers disposed in a circular shape or in a line are provided. The apparatus for manufacturing a continuous reactor type core-shell catalyst electrode includes: a main body; reaction chambers which are disposed plurally in a circular shape inside the main body, store reaction solution inside thereof, are equipped with a movable member and counter electrodes, and are coupled with a reference electrode to a lateral portion thereof; a palladium sheet which is moved by the movable member and immersed in the reaction solution as the movable member moves downward; a power supply which applies a voltage to the electrodes.Type: GrantFiled: June 12, 2019Date of Patent: February 23, 2021Assignee: KOREA INSTITUTE OF ENERGY RESEARCHInventors: Gu-gon Park, Hyo-june Lee, Chang-soo Kim, Won-yong Lee, Tae-hyun Yang, Sung-dae Yim, Min-jin Kim, Young-jun Sohn, Byung-chan Bae, Seung-gon Kim, Dong-won Shin, Hwan-yeong Oh, Seung-hee Woo, So-jeong Lee, Hye-jin Lee, Yoon-young Choi, Seok-hee Park
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Publication number: 20200168914Abstract: The present disclosure provides an apparatus and a method for manufacturing a continuous reactor type core-shell catalyst electrode, which may manufacture a large amount of continuous reactor type core-shell catalyst electrodes by improving coating efficiency of shell metal by using reaction chambers disposed in a circular shape or in a line.Type: ApplicationFiled: June 12, 2019Publication date: May 28, 2020Applicant: KOREA INSTITUTE OF ENERGY RESEARCHInventors: Gu-gon PARK, Hyo-june LEE, Chang-soo KIM, Won-yong LEE, Tae-hyun YANG, Sung-dae YIM, Min-jin KIM, Young-jun SOHN, Byung-chan BAE, Seung-gon KIM, Dong-won SHIN, Hwan-yeong OH, Seung-hee WOO, So-jeong LEE, Hye-jin LEE, Yoon-young CHOI, Seok-hee PARK
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Patent number: 10026520Abstract: Provided is a cathode active material for a secondary battery, specifically, a cathode active material for a secondary battery including sodium transition metal pyrophosphate satisfying Na3.12?x2Acx1M1ay1M2by2 (P2O7)z, which has an advantage of structural stability due to a strong P—O bond of sodium transition metal phosphate having an olivine structure, and also performs proper intercalation and deintercalation of Na ions having a large ion radius, thereby significantly improving reversibility during charging and discharging, and a charge and discharge rate.Type: GrantFiled: August 16, 2013Date of Patent: July 17, 2018Assignees: SK Innovation Co., Ltd., UNIST (Ulsan National Institute of Science and Technology)Inventors: Jeong Soo Kim, Young Shol Kim, Je Hyun Chae, Hee Young Sun, Kyu Tae Lee, Seung Hee Woo, Kwang Ho Ha
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Publication number: 20160164095Abstract: Provided is a cathode active material for a secondary battery, specifically, a cathode active material for a secondary battery including sodium transition metal pyrophosphate satisfying Na3.12?x2Acx1M1ay1M2by2 (P2O7) z, which has an advantage of structural stability due to a strong P—O bond of sodium transition metal phosphate having an olivine structure, and also performs proper intercalation and deintercalation of Na ions having a large ion radius, thereby significantly improving reversibility during charging and discharging, and a charge and discharge rate.Type: ApplicationFiled: August 16, 2013Publication date: June 9, 2016Inventors: Jeong Soo Kim, Young Shol Kim, Je Hyun Chae, Hee Young Sun, Kyu Tae Lee, Seung Hee Woo, Kwang Ho Ha
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Patent number: 8038979Abstract: Disclosed is a method of manufacturing a metal oxide nano powder comprising preparing a first dispersed solution by adding a nano-sized metal powder to water and dispersing the metal powder within the water, performing a hydration reaction of the first dispersed solution at a temperature of about 30 to about 70° C. to generate a precipitation, and filtering and drying the precipitation to prepare a metal oxide powder. Also, disclosed is a metal oxide nano powder manufactured by the method described above, and having any one of a bar-form, a cube-form, and a fiber-form.Type: GrantFiled: November 6, 2007Date of Patent: October 18, 2011Assignee: Korea Atomic Energy Research InstituteInventors: Chang Kyu Rhee, Min Ku Lee, Young Rang Uhm, Jin Ju Park, Byung Sun Han, Hi Min Lee, Seung-Hee Woo
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Publication number: 20080193760Abstract: Disclosed is a method of manufacturing a metal oxide nano powder comprising preparing a first dispersed solution by adding a nano-sized metal powder to water and dispersing the metal powder within the water, performing a hydration reaction of the first dispersed solution at a temperature of about 30 to about 70° C. to generate a precipitation, and filtering and drying the precipitation to prepare a metal oxide powder. Also, disclosed is a metal oxide nano powder manufactured by the method described above, and having any one of a bar-form, a cube-form, and a fiber-form.Type: ApplicationFiled: November 6, 2007Publication date: August 14, 2008Inventors: Chang Kyu Rhee, Min Ku Lee, Young Rang Uhm, Jin Ju Park, Byung Sun Han, Hi Min Lee, Seung-Hee Woo