Patents by Inventor Seung Bo YANG
Seung Bo YANG 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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CARBON COMPOSITE FOR ELECTRODE OF BATTERY, BATTERY COMPRISING SAME, AND METHOD OF MANUFACTURING SAME
Publication number: 20240072243Abstract: A carbon composite for an electrode of a battery, a battery including the same, and a method of manufacturing the same are provided. The carbon composite comprises a porous carbon material, and vanadium nitride particles formed on a surface of the porous carbon material, and provides improved performance of the battery including the same. The method of manufacturing the same is capable of preparing catalyst particles uniformly distributed on the surface of the porous carbon material without using harmful gas or strong acid.Type: ApplicationFiled: March 30, 2023Publication date: February 29, 2024Inventors: Yo-Chan JEONG, Chang-Hoon LEE, Seung-Bo YANG -
Publication number: 20240072258Abstract: A positive electrode active material for use in a positive electrode of a lithium-sulfur battery is provided. The positive electrode active material includes a) particles A having a first porous carbon material, at least part of which is crystalline, and catalyst particles deposited on the first porous carbon material; and b) particles B having a second porous carbon material, at least part of which is crystalline, and sulfur infiltrated into the second porous carbon material, wherein the particles A and the particles B have different morphologies.Type: ApplicationFiled: June 22, 2023Publication date: February 29, 2024Applicant: LG Energy Solution, Ltd.Inventors: Yo-Chan Jeong, Chang-Hoon Lee, Seung-Bo Yang
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Publication number: 20240038968Abstract: The present disclosure relates to a carbon composite for use in a cathode of a lithium-sulfur battery and a method for preparing the same. The carbon composite material includes: a porous carbon support; a catalyst containing a transition metal; and a carbon layer coated on at least a portion of a surface of the catalyst, where the transition metal comprises at least one element of cobalt (Co) and iron (Fe), and where the carbon layer comprises a nitrogen (N)-containing carbon compound.Type: ApplicationFiled: May 17, 2023Publication date: February 1, 2024Inventors: Yo Chan JEONG, Jinwoo LEE, Seoa KIM, Kwon-Nam SOHN, Seung-Bo YANG, Won-Gwang LIM
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Publication number: 20230327084Abstract: A carbon composite for an electrode of a battery, method for manufacturing the same, an electrode including the same, and a battery including the same are provided. The carbon composite comprises a porous carbon material including an outer surface and pores comprising an inner surface, the porous carbon material being doped with a heteroelement, and a catalyst comprising a transition metal formed on the outer surface or the inner surface of at least a plurality of the pores, and provides improved kinetic activity in electrochemical reaction during charge and discharge of the battery and cost efficiency for commercialization of the battery.Type: ApplicationFiled: December 16, 2022Publication date: October 12, 2023Inventors: Yo-Chan Jeong, Jinwoo Lee, Cheol-Young Park, Kwon-Nam Sohn, Seung-Bo Yang, Won-Gwang Lim
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Patent number: 10818915Abstract: Provided are a porous silicon-carbon composite, which includes a core including a plurality of active particles, a conductive material formed on at least a portion of surfaces of the active particles, first pores, and second pores, and a first shell layer which is coated on the core and includes graphene, wherein the active particles include a plurality of silicon particles, silicon oxide particles, or a combination thereof, the first pores are present in the core and are formed by agglomeration of the plurality of active particles, and the second pores are irregularly dispersed and present in the core, has an average particle diameter smaller than an average particle diameter of the active particles, and are spherical, a method of manufacturing the same, and a negative electrode and a lithium secondary battery including the porous silicon-carbon composite.Type: GrantFiled: May 8, 2015Date of Patent: October 27, 2020Assignee: LG Chem, Ltd.Inventors: Eui Yong Hwang, In Young Kim, Jin Yeong Lee, Won Jong Kwon, Kwon Nam Sohn, Seung Bo Yang
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Patent number: 10602646Abstract: The present invention relates to a method for preparing a magnetic iron oxide-graphene composite, a magnetic iron oxide-graphene composite prepared thereby and a composition for electromagnetic wave shielding including the same, and since graphene is prepared from a stage 1-GIC using FeCl3, magnetic particles in the form of FeOx are naturally formed on the surface of graphene during the preparation process. In addition, a magnetic material is formed on the surface of graphene while the defects of graphene are minimized, and thus the magnetic iron oxide-graphene composite prepared according to the present invention can be useful as an electromagnetic wave absorber.Type: GrantFiled: October 28, 2016Date of Patent: March 24, 2020Assignee: LG Chem, Ltd.Inventors: Se Ho Park, Kwon Nam Sohn, Won Jong Kwon, Seung Bo Yang
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Patent number: 10472242Abstract: The present invention relates to a method for preparing graphene which comprises subjecting expanded graphite to high speed homogenization to prepare a feed solution and then subjecting the same to high pressure homogenization, thereby increasing the degree of dispersion of expanded graphite in the feed solution and so improving the efficiency of high pressure homogenization. Therefore, the present method has features that the efficiency of graphene preparation is excellent and the size of graphene to be prepared is uniform, compared with a conventional process.Type: GrantFiled: December 10, 2015Date of Patent: November 12, 2019Assignee: LG Chem, Ltd.Inventors: Seung Bo Yang, Kwon Nam Sohn, Won Jong Kwon, Se Ho Park, Mi Jin Lee
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Patent number: 10435571Abstract: The present invention relates to a method for preparing carbon nanotubes which are capable of more effectively preparing carbon nanotubes having a uniform and fine size, and a dispersion composition of carbon nanotubes obtained using the same. The method for preparing carbon nanotube comprises the steps of: forming a dispersion comprising carbon nanotube bundles, a dispersant and a solvent; and enabling the dispersion to consecutively pass through a high pressure homogenizer, wherein the dispersant is a mixture of plural kinds of polyaromatic hydrocarbon oxides, and the carbon nanotube bundles are pulverized or disentangled while passing through a microchannel of the high pressure homogenizer under a shear force to form carbon nanotubes.Type: GrantFiled: May 15, 2015Date of Patent: October 8, 2019Assignee: LG Chem, Ltd.Inventors: Kwon Nam Sohn, Kil Sun Lee, Won Jong Kwon, Su Jin Park, Byung Hun Oh, Eui Yong Hwang, Seung Bo Yang, Kwang Hyun Yoo, Mi Jin Lee
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Patent number: 10131803Abstract: Disclosed herein are a preparation method of graphene, capable of easily preparing a graphene flake having a smaller thickness and a large area, and a dispersed composition of graphene obtained using the same. The preparation method of graphene includes applying a physical force to dispersion of a carbon-based material including graphite or a derivative thereof, and a dispersant, wherein the dispersant includes a mixture of plural kinds of polyaromatic hydrocarbon oxides, containing the polyaromatic hydrocarbon oxides having a molecular weight of 300 to 1000 in a content of 60% by weight or more, and the graphite or the derivative thereof is formed into a graphene flake having a thickness in nanoscale under application of a physical force.Type: GrantFiled: December 22, 2014Date of Patent: November 20, 2018Assignee: LG Chem, Ltd.Inventors: Kwon Nam Sohn, Kwang Hyun Yoo, Won Jong Kwon, Kil Sun Lee, Seung Bo Yang, In Young Kim, Mi Jin Lee, Jin Yeong Lee
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Patent number: 10033044Abstract: The present invention relates to a conducting material composition capable of forming an electrode in which at least two kinds of carbon based materials are contained in a uniformly dispersed state to enable a battery such as a lithium rechargeable battery having more improved electrical and lifetime characteristics to be provided, and a slurry composition for forming an electrode of a lithium rechargeable battery and a lithium rechargeable battery using the same. The conducting material composition contains: at least two kinds of conductive carbon-based materials selected from the group consisting of carbon nano tube, graphene, and carbon black; and a dispersant containing a plurality kinds of poly aromatic hydrocarbon oxides, wherein the dispersant contains poly aromatic hydrocarbon oxides having a molecular weight of 300 to 1000 at a content of 60 wt.% or more.Type: GrantFiled: December 22, 2014Date of Patent: July 24, 2018Assignee: LG Chem, Ltd.Inventors: Kil Sun Lee, Kwon Nam Sohn, Won Jong Kwon, Seung Bo Yang, In Young Kim, Kwang Hyun Yoo, Mi Jin Lee, Jin Yeong Lee
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Publication number: 20180206366Abstract: The present invention relates to a method for preparing a magnetic iron oxide-graphene composite, a magnetic iron oxide-graphene composite prepared thereby and a composition for electromagnetic wave shielding including the same, and since graphene is prepared from a stage 1-GIC using FeCl3, magnetic particles in the form of FeOx are naturally formed on the surface of graphene during the preparation process. In addition, a magnetic material is formed on the surface of graphene while the defects of graphene are minimized, and thus the magnetic iron oxide-graphene composite prepared according to the present invention can be useful as an electromagnetic wave absorber.Type: ApplicationFiled: October 28, 2016Publication date: July 19, 2018Applicant: LG Chem, Ltd.Inventors: Se Ho PARK, Kwon Nam SOHN, Won Jong KWON, Seung Bo YANG
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Publication number: 20170305747Abstract: The present invention relates to a method for preparing graphene which comprises subjecting expanded graphite to high speed homogenization to prepare a feed solution and then subjecting the same to high pressure homogenization, thereby increasing the degree of dispersion of expanded graphite in the feed solution and so improving the efficiency of high pressure homogenization. Therefore, the present method has features that the efficiency of graphene preparation is excellent and the size of graphene to be prepared is uniform, compared with a conventional process.Type: ApplicationFiled: December 10, 2015Publication date: October 26, 2017Applicant: LG Chem, Ltd.Inventors: Seung Bo Yang, Kwon Nam Sohn, Won Jong Kwon, Se Ho Park, Mi Jin Lee
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Publication number: 20170158512Abstract: Disclosed herein are a preparation method of graphene, capable of easily preparing a graphene flake having a smaller thickness and a large area, and a dispersed composition of graphene obtained using the same. The preparation method of graphene includes applying a physical force to dispersion of a carbon-based material including graphite or a derivative thereof, and a dispersant, wherein the dispersant includes a mixture of plural kinds of polyaromatic hydrocarbon oxides, containing the polyaromatic hydrocarbon oxides having a molecular weight of 300 to 1000 in a content of 60% by weight or more, and the graphite or the derivative thereof is formed into a graphene flake having a thickness in nanoscale under application of a physical force.Type: ApplicationFiled: December 22, 2014Publication date: June 8, 2017Applicant: LG Chem, Ltd.Inventors: Kwon Nam Sohn, Kwang Hyun Yoo, Won Jong Kwon, Kil Sun Lee, Seung Bo Yang, In Young Kim, Mi Jin Lee, Jin Yeong Lee
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Publication number: 20170047584Abstract: Provided are a porous silicon-carbon composite, which includes a core including a plurality of active particles, a conductive material formed on at least a portion of surfaces of the active particles, first pores, and second pores, and a first shell layer which is coated on the core and includes graphene, wherein the active particles include a plurality of silicon particles, silicon oxide particles, or a combination thereof, the first pores are present in the core and are formed by agglomeration of the plurality of active particles, and the second pores are irregularly dispersed and present in the core, has an average particle diameter smaller than an average particle diameter of the active particles, and are spherical, a method of manufacturing the same, and a negative electrode and a lithium secondary battery including the porous silicon-carbon composite.Type: ApplicationFiled: May 8, 2015Publication date: February 16, 2017Applicant: LG Chem, Ltd.Inventors: Eui Yong HWANG, In Young KIM, Jin Yeong LEE, Won Jong KWON, Kwon Nam SOHN, Seung Bo YANG
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Publication number: 20170036914Abstract: The present invention relates to a method for preparing carbon nanotubes which are capable of more effectively preparing carbon nanotubes having a uniform and fine size, and a dispersion composition of carbon nanotubes obtained using the same. The method for preparing carbon nanotube comprises the steps of: forming a dispersion comprising carbon nanotube bundles, a dispersant and a solvent; and enabling the dispersion to consecutively pass through a high pressure homogenizer, wherein the dispersant is a mixture of plural kinds of polyaromatic hydrocarbon oxides, and the carbon nanotube bundles are pulverized or disentangled while passing through a microchannel of the high pressure homogenizer under a shear force to form carbon nanotubes.Type: ApplicationFiled: May 15, 2015Publication date: February 9, 2017Applicant: LG Chem, Ltd.Inventors: Kwon Nam Sohn, Kil Sun Lee, Won Jong Kwon, Su Jin Park, Byung Hun Oh, Eui Yong Hwang, Seung Bo Yang, Kwang Hyun Yoo, Mi Jin Lee
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Publication number: 20160380270Abstract: The present invention relates to a conducting material composition capable of forming an electrode in which at least two kinds of carbon based materials are contained in a uniformly dispersed state to enable a battery such as a lithium rechargeable battery having more improved electrical and lifetime characteristics to be provided, and a slurry composition for forming an electrode of a lithium rechargeable battery and a lithium rechargeable battery using the same. The conducting material composition contains: at least two kinds of conductive carbon-based materials selected from the group consisting of carbon nano tube, graphene, and carbon black; and a dispersant containing a plurality kinds of poly aromatic hydrocarbon oxides, wherein the dispersant contains poly aromatic hydrocarbon oxides having a molecular weight of 300 to 1000 at a content of 60 wt. % or more.Type: ApplicationFiled: December 22, 2014Publication date: December 29, 2016Applicant: LG CHEM, LTD.Inventors: Kil Sun LEE, Kwon Nam SOHN, Won Jong KWON, Seung Bo YANG, In Young KIM, Kwang Hyun YOO, Mi Jin LEE, Jin Yeong LEE