Patents by Inventor Dae-Jong Seo
Dae-Jong Seo 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: 9070930Abstract: The present invention relates to a method for manufacturing an electrode having an organic/inorganic composite porous coating layer comprising porous inorganic particles and a binder polymer, wherein the porous inorganic particles have pores having such a size that lithium ions (Li+) solvated in an electrolyte solvent can pass therethrough. The method comprises the steps of dispersing inorganic precursors and heat-decomposable compounds in a dispersion medium, misting the inorganic precursor solution, and performing a thermal decomposition and a crystallization processes, to thereby prepare porous inorganic particles, adding and mixing the porous inorganic particles to a polymer solution in which a binder polymer is dissolved, and coating the mixture onto a preliminarily formed electrode and drying the coating layer.Type: GrantFiled: December 16, 2011Date of Patent: June 30, 2015Assignee: LG Chem, Ltd.Inventors: Dae-Jong Seo, Sang-Young Lee, Seok-Koo Kim, Jang-Hyuk Hong
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Patent number: 8822073Abstract: Disclosed is an electrode comprising an organic/inorganic composite introduced onto either surface or both surfaces thereof, the organic/inorganic composite comprising inorganic particle or aggregates thereof having a unique spectrum or color pattern according to a predetermined rule, and a polymer capable of interconnecting and fixing the inorganic particles. Also, disclosed are an electrochemical device comprising the above electrode, and a method for identifying the origin or kind of an electrode itself or an electrochemical device comprising the same by using the above electrode.Type: GrantFiled: July 18, 2007Date of Patent: September 2, 2014Assignee: LG Chem, Ltd.Inventors: Sang-Young Lee, Dae-Jong Seo, Dong-Myung Kim, Seok-Koo Kim, Hyun-Min Jang
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Patent number: 8318360Abstract: The present invention provides an organic/inorganic composite porous separator, which comprises: (a) a porous substrate having pores; and (b) an organic/inorganic composite layer formed by coating at least one region selected from the group consisting of a surface of the substrate and a part of pores present in the substrate with a mixture of inorganic porous particles and a binder polymer, wherein the inorganic porous particles have a plurality of macropores with a diameter of 50 nm or greater in the particle itself thereby form a pore structure, a manufacturing method thereof, and an electrochemical device using the same. As an additional pathway for lithium ions is created due to a number of pores existing in the inorganic porous particle itself, degradation in the battery performance can be minimized, and energy density per unit weight can be increased by the weight loss effect.Type: GrantFiled: November 1, 2010Date of Patent: November 27, 2012Assignee: LG Chem, Ltd.Inventors: Dae Jong Seo, Seok Koo Kim, Jang Hyuk Hong, Joon Yong Sohn, Sang Young Lee, Soon Ho Ahn
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Publication number: 20120088029Abstract: The present invention relates to a method for manufacturing an electrode having an organic/inorganic composite porous coating layer comprising porous inorganic particles and a binder polymer, wherein the porous inorganic particles have pores having such a size that lithium ions (Li+) solvated in an electrolyte solvent can pass therethrough. The method comprises the steps of dispersing inorganic precursors and heat-decomposable compounds in a dispersion medium, misting the inorganic precursor solution, and performing a thermal decomposition and a crystallization processes, to thereby prepare porous inorganic particles, adding and mixing the porous inorganic particles to a polymer solution in which a binder polymer is dissolved, and coating the mixture onto a preliminarily formed electrode and drying the coating layer.Type: ApplicationFiled: December 16, 2011Publication date: April 12, 2012Applicant: LG CHEM, LTD.Inventors: Dae-Jong SEO, Sang-Young LEE, Seok-Koo KIM, Jang-Hyuk HONG
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Patent number: 8062795Abstract: Disclosed is a separator comprising inorganic particle or aggregates thereof having a unique spectrum or color pattern according to a predetermined rule. Also, disclosed are an electrochemical device comprising the above separator and a method for identifying the origin or kind of the separator itself or the electrochemical device comprising the same by using the above separator. Further, disclosed is a method for manufacturing the aforementioned separator, the method comprising a step of forming a specific pattern by coating inorganic particles having a unique spectrum or color pattern on at least one area selected from the group consisting of a surface of a porous substrate and a porous part of the substrate.Type: GrantFiled: September 21, 2007Date of Patent: November 22, 2011Assignee: LG Chem, Ltd.Inventors: Sang-Young Lee, Dae-Jong Seo, Dong-Myung Kim, Seok-Koo Kim, Hyun-Min Jang
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Publication number: 20110045168Abstract: The present invention provides an organic/inorganic composite porous separator, which comprises: (a) a porous substrate having pores; and (b) an organic/inorganic composite layer formed by coating at least one region selected from the group consisting of a surface of the substrate and a part of pores present in the substrate with a mixture of inorganic porous particles and a binder polymer, wherein the inorganic porous particles have a plurality of macropores with a diameter of 50 nm or greater in the particle itself thereby form a pore structure, a manufacturing method thereof, and an electrochemical device using the same. As an additional pathway for lithium ions is created due to a number of pores existing in the inorganic porous particle itself, degradation in the battery performance can be minimized, and energy density per unit weight can be increased by the weight loss effect.Type: ApplicationFiled: November 1, 2010Publication date: February 24, 2011Applicant: LG CHEM, LTD.Inventors: Dae Jong SEO, Seok Koo KIM, Jang Hyuk HONG, Joon Yong SOHN, Sang Young LEE, Soon Ho AHN
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Patent number: 7883799Abstract: The present invention provides an organic/inorganic composite porous separator, which comprises: (a) a porous substrate having pores; and (b) an organic/inorganic composite layer formed by coating at least one region selected from the group consisting of a surface of the substrate and a part of pores present in the substrate with a mixture of inorganic porous particles and a binder polymer, wherein the inorganic porous particles have a plurality of macropores with a diameter of 50 nm or greater in the particle itself thereby form a pore structure, a manufacturing method thereof, and an electrochemical device using the same. As an additional pathway for lithium ions is created due to a number of pores existing in the inorganic porous particle itself, degradation in the battery performance can be minimized, and energy density per unit weight can be increased by the weight loss effect.Type: GrantFiled: November 28, 2006Date of Patent: February 8, 2011Assignee: LG Chem, Ltd.Inventors: Dae Jong Seo, Seok Koo Kim, Jang Hyuk Hong, Joon Yong Sohn, Sang Young Lee, Soon Ho Ahn
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Publication number: 20100290044Abstract: Disclosed is an electrode comprising an organic/inorganic composite introduced onto either surface or both surfaces thereof, the organic/inorganic composite comprising inorganic particle or aggregates thereof having a unique spectrum or color pattern according to a predetermined rule, and a polymer capable of interconnecting and fixing the inorganic particles. Also, disclosed are an electrochemical device comprising the above electrode, and a method for identifying the origin or kind of an electrode itself or an electrochemical device comprising the same by using the above electrode.Type: ApplicationFiled: July 18, 2007Publication date: November 18, 2010Applicant: LG Chem, Ltd.Inventors: Sang-Young Lee, Dae-Jong Seo, Dong-Myung Kim, Seok-Koo Kim, Hyun-Min Jang
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Publication number: 20100285371Abstract: Disclosed is a separator comprising inorganic particle or aggregates thereof having a unique spectrum or color pattern according to a predetermined rule. Also, disclosed are an electrochemical device comprising the above separator and a method for identifying the origin or kind of the separator itself or the electrochemical device comprising the same by using the above separator. Further, disclosed is a method for manufacturing the aforementioned separator, the method comprising a step of forming a specific pattern by coating inorganic particles having a unique spectrum or color pattern on at least one area selected from the group consisting of a surface of a porous substrate and a porous part of the substrate.Type: ApplicationFiled: September 21, 2007Publication date: November 11, 2010Applicant: LG CHEM, LTD.Inventors: Sang-Young Lee, Dae-Jong Seo, Dong-Myung Kim, Seok-Koo Kim, Hyun-Min Jang
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Publication number: 20100167124Abstract: Disclosed is an electrode whose surface includes an organic/inorganic composite porous coating layer comprising porous inorganic particles and a binder polymer, wherein the porous inorganic particles have pores having such a size that lithium ions (Li+) solvated in an electrolyte solvent can pass therethrough. A method for manufacturing the electrode and an electrochemical device using the electrode are also disclosed. The organic/inorganic composite porous coating layer formed on the electrode according to the present invention provides an additional pathway for lithium ion conduction due to a plurality of pore structures present in the porous inorganic particles. Thus, when the organic/inorganic composite porous coating layer is used instead of a conventional polymer-based separator in a battery, the battery can provide improved quality and an increased energy density per unit weight due to a reduced weight of the organic/inorganic composite porous coating layer.Type: ApplicationFiled: February 16, 2007Publication date: July 1, 2010Applicant: LG Chem, Ltd.Inventors: Dae-Jong Seo, Sang-Young Lee, Seok-Koo Kim, Jang-Hyuk Hong
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Patent number: 7638241Abstract: Disclosed is an organic/inorganic composite separator including: a porous substrate having pores; and a porous active layer containing a mixture of inorganic particles and a binder polymer with which at least one surface of the porous substrate is coated. The organic/inorganic composite separator of the present invention may be useful to enhance peeling and scratch resistances and improve a lamination characteristic by introducing a porous active layer onto a porous substrate having pores, the porous active layer having heterogeneity of morphology toward a thickness direction in which a content ratio of the binder polymer/inorganic particles present in a surface layer is higher than that of the binder polymer/inorganic particles present inside the surface layer. Accordingly, the stability and performances of a battery can be improved together since the detachment of inorganic particles from the porous active layer may be reduced during the assembly process of the electrochemical device.Type: GrantFiled: December 6, 2006Date of Patent: December 29, 2009Assignee: LG Chem, Ltd.Inventors: Sang-Young Lee, Dae-Jong Seo, Joon-Yong Sohn, Seok-Koo Kim, Jang-Hyuk Hong, Young-Soo Kim, Hyun-Min Jang
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Publication number: 20080311479Abstract: Disclosed is an electrode having a current collector coated with an electrode active material, wherein non-coated regions of the electrode and boundary regions of intermittently pattern-coated electrodes are coated with a porous active layer including a mixture of inorganic particles and a binder polymer. The electrode of the present invention may be useful to improve safety of a battery and also minimize reduction in the capacity of a battery by introducing the porous active layer onto non-coated regions of the electrode and/or boundary regions of the intermittently pattern-coated electrodes to prevent internal short circuit caused by the contact between both electrodes, wherein the boundary regions are coated with the electrode active material but vulnerable to the electrical short circuit.Type: ApplicationFiled: December 6, 2006Publication date: December 18, 2008Applicant: LG CHEM, LTD.Inventors: Sang-Young Lee, Dae-Jong Seo, Joon-Yong Sohn, Seok-Koo Kim, Jang-Hyuk Hong, Young-Soo Kim, Hyun- Min Jang
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Publication number: 20080292968Abstract: Disclosed is an organic/inorganic composite separator including: a porous substrate having pores; and a porous active layer containing a mixture of inorganic particles and a binder polymer with which at least one surface of the porous substrate is coated. The organic/inorganic composite separator of the present invention may be useful to enhance peeling and scratch resistances and improve a lamination characteristic by introducing a porous active layer onto a porous substrate having pores, the porous active layer having heterogeneity of morphology toward a thickness direction in which a content ratio of the binder polymer/inorganic particles present in a surface layer is higher than that of the binder polymer/inorganic particles present inside the surface layer. Accordingly, the stability and performances of a battery can be improved together since the detachment of inorganic particles from the porous active layer may be reduced during the assembly process of the electrochemical device.Type: ApplicationFiled: December 6, 2006Publication date: November 27, 2008Applicant: LG CHEM, LTD.Inventors: Sang-Young Lee, Dae-Jong Seo, Joon-Yong Sohn, Seok-Koo Kim, Jang-Hyuk Hong, Young-Soo Kim, Hyun-Min Jang