Patents by Inventor Sung-Joong Kang
Sung-Joong Kang 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: 11223037Abstract: A method for manufacturing an anode for a cable-type secondary battery, includes forming a lithium-containing electrode layer on the outer surface of a wire-type current collector; and surrounding the outer surface of the lithium-containing electrode layer with a substrate for forming a polymer layer spirally, and pressing the outside of the substrate for forming a polymer layer to form a polymer layer on the lithium-containing electrode layer, wherein the polymer layer includes a hydrophobic polymer, an ion conductive polymer, and a binder for binding the hydrophobic polymer and the ion conductive polymer with each other. An anode obtained from the method and a cable-type secondary battery including the anode are also provided.Type: GrantFiled: August 31, 2018Date of Patent: January 11, 2022Assignee: LG CHEM, LTD.Inventors: Jung-Hun Choi, Dong-Hyeon Kang, Sung-Joong Kang, Byoung-Kuk Son, In-Sung Uhm, Dong-Chan Lee, Yong-Hee Lee, Min-Chul Jang
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Patent number: 11201357Abstract: A flexible secondary battery includes an electrode support; a sheet-type internal electrode wound helically outside of the electrode support; a sheet-type first solid electrolyte layer wound helically outside of the internal electrode; a sheet-type bipolar electrode wound helically outside of the first solid electrolyte layer; a sheet-type second solid electrolyte layer wound helically outside of the bipolar electrode; and a sheet-type external electrode wound helically outside of the second solid electrolyte layer, wherein each of the first and second solid electrolyte layers include an organic solid electrolyte, the internal electrode is provided with insulation coating portions at both longitudinal ends of one surface facing the first solid electrolyte layer, the external electrode is provided with insulation coating portions at both longitudinal ends of one surface facing the second solid electrolyte layer, and the bipolar electrode is provided with insulation coating portions at both longitudinal ends ofType: GrantFiled: December 21, 2018Date of Patent: December 14, 2021Inventors: Jung-Pil Lee, In-Sung Uhm, Sung-Joong Kang, Hyo-Sik Kim
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Publication number: 20210367263Abstract: A solid electrolyte membrane for a solid-state battery and a battery comprising the same is provided. The battery may comprise lithium metal as a negative electrode active material. The solid electrolyte membrane comprises an inhibiting layer, which is preferably capable of inhibiting growth of lithium dendrite, because it includes an effective amount of a dendrite growth-inhibiting material, which is capable of ionizing lithium deposited in the form of metal. Thus, when lithium metal is used as a negative electrode for a solid-state battery comprising the solid electrolyte membrane, it is possible to delay and/or inhibit growth of lithium dendrite, and thus to effectively prevent an electrical short-circuit caused by dendrite growth.Type: ApplicationFiled: June 14, 2019Publication date: November 25, 2021Applicant: LG CHEM, LTD.Inventors: Jung-Pil LEE, Sung-Joong KANG, Eun-Bee KIM, Ji-Hoon RYU, Suk-Woo LEE, Jae-Hyun LEE
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Publication number: 20210249688Abstract: The present disclosure relates to an electrode for an all solid-state battery and a manufacturing method thereof, and a mixture of a polymer-based solid electrolyte and a conductive material is filled between electrode active material particles that constitute an electrode active material layer, to increase the contact between the electrode active material particles and the conductive material through a solvent annealing process included in a manufacturing process, thereby improving ionic conductivity in the electrode and capacity in the electrode.Type: ApplicationFiled: September 27, 2019Publication date: August 12, 2021Applicant: LG Chem, Ltd.Inventors: Jung-Pil Lee, Eun-Bee Kim, Ji-Hoon Ryu, Sung-Joong Kang
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Publication number: 20210242446Abstract: The present disclosure relates to an electrode assembly for an all-solid-state battery with improved safety, and more particularly, to an electrode assembly of a new structure designed to prevent the damage of a solid electrolyte layer caused by a step formed in a negative electrode layer due to changes in thickness of the negative electrode layer, such as an increase or decrease in thickness at part of the negative electrode layer, during charging/discharging. The electrode assembly is characterized by comprising a protective layer having an opening, interposed between the negative electrode and the solid electrolyte layer.Type: ApplicationFiled: August 20, 2019Publication date: August 5, 2021Applicant: LG CHEM, LTD.Inventors: Guilong JIN, Sung-Joong KANG, Eun-Bee KIM, Ji-Hoon RYU, Suk-Woo LEE, Jung-Pil LEE
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Patent number: 11069895Abstract: An electrode assembly for a solid state battery includes a positive electrode, a negative electrode and a solid electrolyte layer interposed between the positive electrode and the negative electrode. In addition, the binder disposed at the interface between the negative electrode and the solid electrolyte layer, the interface between the positive electrode and the solid electrolyte layer and/or at a predetermined depth from the interface is crosslinked to form a three-dimensional network. In other words, in the electrode assembly, the binder contained in the negative electrode and the solid electrolyte layer and/or the binder contained in the positive electrode and the solid electrolyte layer is crosslinked to improve the interfacial binding force between the negative electrode and the solid electrolyte layer and/or between the positive electrode and the solid electrolyte layer, and thus ion conductivity is maintained to a significantly high level.Type: GrantFiled: March 16, 2018Date of Patent: July 20, 2021Assignee: LG CHEM, LTD.Inventors: Sung-Ju Cho, Ho-Suk Shin, Seung-He Woo, Sung-Joong Kang, Hyea-Eun Han
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Publication number: 20210202990Abstract: The present disclosure relates to a solid electrolyte membrane including a polymer electrolyte material and a porous polymer sheet which form a composite with each other in such a manner that the pores of the porous polymer sheet filled with the polymer electrolyte material, and a method for manufacturing the same. Since the porous polymer material and the solid electrolyte material form a composite with each other, it is possible to obtain a solid electrolyte membrane having excellent strength and a small thickness of 50 ?m or less, and thus to improve the energy density of a battery.Type: ApplicationFiled: December 6, 2019Publication date: July 1, 2021Applicant: LG CHEM, LTD.Inventors: Jung-Pil LEE, Sung-Joong KANG, Eun-Bee KIM, Ji-Hoon RYU, Suk-Woo LEE
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Publication number: 20210111393Abstract: A method for manufacturing an anode for a cable-type secondary battery, includes forming a lithium-containing electrode layer on the outer surface of a wire-type current collector; and surrounding the outer surface of the lithium-containing electrode layer with a substrate for forming a polymer layer spirally, and pressing the outside of the substrate for forming a polymer layer to for a polymer layer on the lithium-containing electrode layer, wherein the polymer layer includes a hydrophobic polymer, an ion conductive polymer, and a binder for binding the hydrophobic polymer and the ion conductive polymer with each other. An anode obtained from the method and a cable-type secondary battery including the anode are also provided.Type: ApplicationFiled: August 31, 2018Publication date: April 15, 2021Applicant: LG CHEM, LTD.Inventors: Jung-Hun CHOI, Dong-Hyeon KANG, Sung-Joong KANG, Byoung-Kuk SON, In-Sung UHM, Dong-Chan LEE, Yong-Hee LEE, Min-Chul JANG
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Publication number: 20210050600Abstract: Disclosed are an electrode having a three-dimensional structure, the electrode including: a porous nonwoven web including a plurality of polymer fibers that form an interconnected porous network; an active material composite positioned among the polymer fibers and including active material particles and a first conductive material; and a second conductive material positioned on an outer surface of the active material composite, wherein the interconnected porous network is filled homogeneously with the active material composite and the second conductive material to form a super lattice structure, and an electrochemical device including the electrode having a three-dimensional structure.Type: ApplicationFiled: November 8, 2018Publication date: February 18, 2021Applicants: LG Chem, Ltd., Ulsan National Institute of Science and TechnologyInventors: In-Sung Uhm, Sang-Young Lee, Sung-Joong Kang, Jeong-A Kim, Je-Young Kim, Ju-Myung Kim, Yong-Hee Lee, Jae-Hyun Lee
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Publication number: 20210043916Abstract: The present disclosure relates to an electrode for an all solid-state battery and a method for manufacturing the same. The electrode comprises an electrode active material layer, wherein the gaps between the electrode active material particles forming the electrode active material layer are filled with a mixture of a polymeric solid electrolyte and a conductive material. The method for manufacturing the electrode comprises a solvent annealing process, and the contact between the electrode active material particles and the conductive material is improved through the solvent annealing process, thereby improving ion conductivity of the electrode and capacity realization in the battery.Type: ApplicationFiled: May 3, 2019Publication date: February 11, 2021Applicant: LG Chem, Ltd.Inventors: Jung-Pil Lee, Ji-Hoon Ryu, Sung-Joong Kang, Jae-Hyun Lee
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Publication number: 20210036378Abstract: A flexible secondary battery includes an electrode support; a sheet-type internal electrode wound helically outside of the electrode support; a sheet-type first solid electrolyte layer wound helically outside of the internal electrode; a sheet-type bipolar electrode wound helically outside of the first solid electrolyte layer; a sheet-type second solid electrolyte layer wound helically outside of the bipolar electrode; and a sheet-type external electrode wound helically outside of the second solid electrolyte layer, wherein each of the first and second solid electrolyte layers include an organic solid electrolyte, the internal electrode is provided with insulation coating portions at both longitudinal ends of one surface facing the first solid electrolyte layer, the external electrode is provided with insulation coating portions at both longitudinal ends of one surface facing the second solid electrolyte layer, and the bipolar electrode is provided with insulation coating portions at both longitudinal ends ofType: ApplicationFiled: December 21, 2018Publication date: February 4, 2021Applicant: LG Chem, Ltd.Inventors: Jung-Pil Lee, In-Sung Uhm, Sung-Joong Kang, Hyo-Sik Kim
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Patent number: 10910630Abstract: An electrode for an all solid type battery is designed such that fibrous carbon materials serving as a conductor are densely arranged crossed into a 3-dimensional structure in the form of a mesh of a nonwoven fabric-like shape, and an inorganic solid electrolyte and electrode active material particles are impregnated and uniformly dispersed in the structure. By this structural feature, the electrode for an all solid type battery has very good electron conductivity and ionic conductivity.Type: GrantFiled: May 15, 2018Date of Patent: February 2, 2021Assignee: LG CHEM, LTD.Inventors: Sung-Ju Cho, Ho-Suk Shin, Seung-He Woo, Sung-Joong Kang, Hyea-Eun Han
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Publication number: 20210020917Abstract: The present disclosure relates to an electrode for an all solid-state battery and a method for manufacturing the same. The electrode comprises an electrode active material layer, wherein the gaps between the electrode active material particles forming the electrode active material layer are filled with a mixture of a polymeric solid electrolyte, oxidation-/reduction-improving additive and a conductive material. The method for manufacturing the electrode comprises a solvent annealing process, and the dissociation degree and transportability of the oxidation-/reduction-improving additive are increased through the solvent annealing process, thereby improving the life characteristics of a battery.Type: ApplicationFiled: May 3, 2019Publication date: January 21, 2021Applicant: LG Chem, Ltd.Inventors: Jung-Pil Lee, Ji-Hee Ahn, Sung-Joong Kang, Jae-Hyun Lee
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Publication number: 20210020945Abstract: The present disclosure relates to an all solid-state battery cell and a method for manufacturing the same. The gaps between the electrode active material particles forming the electrode active material layer are filled with a mixture of a polymeric solid electrolyte with a conductive material, and an organic solid electrolyte membrane is interposed between the positive electrode and the negative electrode. The method comprises a solvent annealing process to improve the contact between the electrode active material particles and the conductive material and to improve the contact between the electrode active material layer and the organic solid electrolyte membrane, thereby providing an all solid-state battery cell with improved ion conductivity and capacity realization.Type: ApplicationFiled: May 3, 2019Publication date: January 21, 2021Applicant: LG Chem, Ltd.Inventors: Jung-Pil Lee, Ji-Young Kim, Ji-Hoon Ryu, Sung-Joong Kang, Jae-Hyun Lee
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Patent number: 10784539Abstract: The present invention provides an electrode assembly, including two or more positive electrode plates and two or more negative electrode plates laminated with each of separators interposed therebetween, wherein both side end portions of the electrode assembly are bent together in the same direction by a curvature radius (R) satisfying the following Equation 1: S[{1/ln(x/y)}*t]=R??1 wherein t is an average thickness (mm) of the laminated electrode assembly, x is a horizontal length of the electrode assembly, and y is a vertical length of the electrode assembly, and S is a constant of 10 or more, and ln(x/y)?1.Type: GrantFiled: March 31, 2017Date of Patent: September 22, 2020Assignee: LG Chem, Ltd.Inventors: Min Kyu You, Sung Joong Kang, Eun Kyung Mok, In Sung Uhm
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Publication number: 20200287245Abstract: The present disclosure relates to a solid electrolyte battery including a negative electrode including: a negative electrode current collector; a first negative electrode active material layer formed on at least one surface of the negative electrode current collector and including a first negative electrode active material, a first solid electrolyte and a first electrolyte salt; and a second negative electrode active material layer formed on the first negative electrode active material layer and including a second negative electrode active material, a second solid electrolyte, a second electrolyte salt and a plasticizer having a melting point of 30-130° C., the solid electrolyte battery is activated at a temperature between the melting point of the plasticizer and 130° C., and a solid electrolyte interface (SEI) layer is formed on the surface of the second negative electrode active material.Type: ApplicationFiled: April 10, 2019Publication date: September 10, 2020Applicant: LG Chem, Ltd.Inventors: Ji-Hoon Ryu, Jung-Pil Lee, Sung-Joong Kang, Eun-Bee Kim, Ji-Young Kim, Suk-Woo Lee, Jae-Hyun Lee
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Publication number: 20200251714Abstract: The present disclosure relates to a positive electrode for a solid electrolyte battery which includes: a positive electrode current collector; a first positive electrode active material layer formed on at least one surface of the positive electrode current collector and including a first positive electrode active material, a first solid electrolyte and a first electrolyte salt; and a second positive electrode active material layer formed on the first positive electrode active material layer and including a second positive electrode active material, a second solid electrolyte, a second electrolyte salt and a plasticizer, wherein the plasticizer has a melting point of 30-130° C. The present disclosure also relates to a solid electrolyte battery including the positive electrode.Type: ApplicationFiled: April 10, 2019Publication date: August 6, 2020Applicant: LG Chem, Ltd.Inventors: Ji-Hoon Ryu, Jung-Pil Lee, Sung-Joong Kang, Eun-Bee Kim, Hyo-Sik Kim, Suk-Woo Lee, Jae-Hyun Lee
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Publication number: 20200153041Abstract: Provided is a composite solid electrolyte membrane for an all-solid-state secondary battery, including: a phase transformation layer containing a plasticizer and a lithium salt; a porous polymer sheet layer; and a solid polymer electrolyte layer, wherein the phase transformation layer, the porous polymer sheet layer and the solid polymer electrolyte layer are stacked successively, and the phase transformation layer is disposed in such a manner that it faces a negative electrode when manufacturing an electrode assembly. An all-solid-state secondary battery including the composite solid electrolyte membrane is also provided. The composite solid electrolyte membrane for an all-solid-state secondary battery reduces the interfacial resistance with an electrode, increases ion conductivity, and improves the safety of a battery.Type: ApplicationFiled: March 22, 2019Publication date: May 14, 2020Applicant: LG Chem, Ltd.Inventors: Ji-Hoon Ryu, Guilong Jin, Ji-Hee Ahn, Sung-Joong Kang, Jae-Hyun Lee
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Publication number: 20200127324Abstract: Provided is provided a lithium metal battery which includes a composite solid electrolyte membrane interposed between a lithium metal negative electrode and a positive electrode, wherein the composite solid electrolyte membrane includes: a phase transformation layer containing a plasticizer and a lithium salt; a porous polymer sheet layer; and a solid polymer electrolyte layer, the phase transformation layer, the porous polymer sheet layer and the solid polymer electrolyte layer stacked successively, and the phase transformation layer is disposed in such a manner that it faces the lithium metal negative electrode. The lithium metal battery shows reduced resistance at the interface with an electrode and increased ion conductivity, has improved safety, and provides improved energy density of an electrode.Type: ApplicationFiled: March 22, 2019Publication date: April 23, 2020Applicant: LG Chem, Ltd.Inventors: Ji-Hoon Ryu, Guilong Jin, Sung-Joong Kang, Jae-Hyun Lee
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Publication number: 20200006779Abstract: A lithium metal electrode includes a current collector having a surface irregularity structure, a lithium metal layer disposed outside of the surface irregularity structure except the uppermost surface of the surface irregularity structure in the current collector, an electron-insulating protective layer disposed outside of the lithium metal layer, and a lithium ion-isolating layer disposed (1) on the uppermost surface of the surface irregularity structure of the current collector, or (2) on the uppermost surface of the surface irregularity structure of the current collector, on the uppermost surface of the lithium metal layer, and on the uppermost surface of the electron-insulating protective layer, wherein the electron-insulating protective layer includes a non-porous layer transporting lithium ions and having no pores, and a polymer porous layer disposed outside thereof. A lithium secondary battery and flexible secondary battery including the lithium metal electrode are also provided.Type: ApplicationFiled: September 12, 2019Publication date: January 2, 2020Applicant: LG Chem, Ltd.Inventors: Yong-Hee Lee, Dong-Hyeon Kang, In-Sung Uhm, Sung-Joong Kang, Min-Chul Jang, Byoung-Kuk Son, Dong-Chan Lee