Patents by Inventor Seok Koo Kim
Seok Koo Kim 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).
-
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
-
Patent number: 8409746Abstract: Disclosed is an organic/inorganic composite porous film comprising: (a) inorganic particles; and (b) a binder polymer coating layer formed partially or totally on surfaces of the inorganic particles, wherein the inorganic particles are interconnected among themselves and are fixed by the binder polymer, and interstitial volumes among the inorganic particles form a micropore structure. A method for manufacturing the same film and an electrochemical device including the same film are also disclosed. An electrochemical device comprising the organic/inorganic composite porous film shows improved safety and quality.Type: GrantFiled: September 1, 2005Date of Patent: April 2, 2013Assignee: LG Chem, Ltd.Inventors: Hyun Hang Yong, Sang Young Lee, Seok Koo Kim, Soon Ho Ahn, Jung Don Suk
-
Patent number: 8377583Abstract: A separator includes a porous substrate having a plurality of pores; a porous coating layer formed on at least one surface of the porous substrate and made of a mixture of a plurality of inorganic particles and a binder polymer; and a dot pattern layer formed on a surface of the porous coating layer and having a plurality of dots made of polymer and arranged at predetermined intervals. The separator may control short-circuit between positive and negative electrodes though an electrochemical device is overheated. Also, a united force to an electrode is enhanced due to the polymer dot pattern layer, thereby preventing the electrode and the separator from being separated. Accordingly, inorganic particles of the porous coating layer formed on the porous substrate are not separated, thereby improving stability of an electrochemical device.Type: GrantFiled: January 14, 2009Date of Patent: February 19, 2013Assignee: LG Chem, Ltd.Inventors: Sang-Young Lee, Seok-Koo Kim, Jong-Hun Kim, Jang-Hyuk Hong
-
Patent number: 8343388Abstract: Disclosed are an electrode having a porous active coating layer, a manufacturing method thereof and an electrochemical device containing the same. The electrode having a porous active coating layer according to the present invention may be useful to enhance peeling and scratch resistances of the porous active layer and improve a lamination characteristic toward the porous active layer 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 the battery can be improved at the same time since the detachment of the inorganic particles from the porous active layer may be reduced during the assembly process of the electrochemical device.Type: GrantFiled: March 6, 2007Date of Patent: January 1, 2013Assignee: LG Chem, Ltd.Inventors: Sang-Young Lee, Seok-Koo Kim, Jong-Hyeok Park, Jang-Hyuk Hong, Byoung-Jin Shin
-
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
-
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
-
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
-
Publication number: 20110281172Abstract: Disclosed is an organic/inorganic composite porous film comprising: (a) inorganic particles; and (b) a binder polymer coating layer formed partially or totally on surfaces of the inorganic particles, wherein the inorganic particles are interconnected among themselves and are fixed by the binder polymer, and interstitial volumes among the inorganic particles form a micropore structure. A method for manufacturing the same film and an electrochemical device including the same film are also disclosed. An electrochemical device comprising the organic/inorganic composite porous film shows improved safety and quality.Type: ApplicationFiled: July 15, 2011Publication date: November 17, 2011Applicant: LG CHEM, LTD.Inventors: Hyun Hang YONG, Sang Young LEE, Seok Koo KIM, Soon Ho AHN, Jung Don SUK
-
Publication number: 20110281150Abstract: Disclosed is an organic/inorganic composite porous film comprising: (a) inorganic particles; and (b) a binder polymer coating layer formed partially or totally on surfaces of the inorganic particles, wherein the inorganic particles are interconnected among themselves and are fixed by the binder polymer, and interstitial volumes among the inorganic particles form a micropore structure. A method for manufacturing the same film and an electrochemical device including the same film are also disclosed. An electrochemical device comprising the organic/inorganic composite porous film shows improved safety and quality.Type: ApplicationFiled: July 15, 2011Publication date: November 17, 2011Applicant: LG CHEM, LTD.Inventors: Hyun Hang YONG, Sang Young LEE, Seok Koo KIM, Soon Ho AHN, Jung Don SUK
-
Publication number: 20110281171Abstract: Disclosed is an organic/inorganic composite porous film comprising: (a) inorganic particles; and (b) a binder polymer coating layer formed partially or totally on surfaces of the inorganic particles, wherein the inorganic particles are interconnected among themselves and are fixed by the binder polymer, and interstitial volumes among the inorganic particles form a micropore structure. A method for manufacturing the same film and an electrochemical device including the same film are also disclosed. An electrochemical device comprising the organic/inorganic composite porous film shows improved safety and quality.Type: ApplicationFiled: July 15, 2011Publication date: November 17, 2011Applicant: LG CHEM, LTD.Inventors: Hyun Hang YONG, Sang Young LEE, Seok Koo KIM, Soon Ho AHN, Jung Don SUK
-
Patent number: 7910240Abstract: Disclosed is an electrode, comprising a coating layer of crosslinked polymer, formed on a surface of electrode active material particles, while maintaining a pore structure formed among the electrode active material particles interconnected to each other in the electrode. A method for manufacturing the electrode and an electrochemical device comprising the electrode are also disclosed. The electrode, which comprises a coating layer of crosslinked polymer formed on the surface of the electrode active material particles, can improve the safety of a battery, while minimizing degradation in the quality of a battery.Type: GrantFiled: April 19, 2006Date of Patent: March 22, 2011Assignees: LG Chem, Ltd., Korea Research Institute of Chemical TechnologyInventors: Sang Young Lee, Seok Koo Kim, Jung Don Suk, Hyun Hang Yong, Jang Hyuk Hong, Soon Ho Ahn, Yongku Kang, Changjin Lee
-
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
-
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
-
Patent number: 7862929Abstract: Disclosed are anode active material slurry for a lithium secondary cell having improved dispersibility of an anode active material and a conductive agent, and a lithium secondary cell comprising the same. Particularly, the present invention is characterized by adding a dispersant comprising a polymer backbone capable of surface-adsorption and a side-chain having non-ionic surfactant properties in a small amount, to the anode active material slurry comprising a carbon-based anode active material that is capable of lithium ion intercalation/deintercalation, a conductive agent, a binder comprising a styrene-butadiene-based polymer resin, a thickener comprising a cellulose-based or an acrylate-based resin, and water.Type: GrantFiled: April 2, 2004Date of Patent: January 4, 2011Assignee: LG Chem, Ltd.Inventors: Seok Koo Kim, Cha Hun Ku, Soon Ho Ahn
-
Publication number: 20100323230Abstract: A separator includes a porous substrate having a plurality of pores; a porous coating layer formed on at least one surface of the porous substrate and made of a mixture of a plurality of inorganic particles and a binder polymer; and a dot pattern layer formed on a surface of the porous coating layer and having a plurality of dots made of polymer and arranged at predetermined intervals. The separator may control short-circuit between positive and negative electrodes though an electrochemical device is overheated. Also, a united force to an electrode is enhanced due to the polymer dot pattern layer, thereby preventing the electrode and the separator from being separated. Accordingly, inorganic particles of the porous coating layer formed on the porous substrate are not separated, thereby improving stability of an electrochemical device.Type: ApplicationFiled: January 14, 2009Publication date: December 23, 2010Applicant: LG CHEM, LTD.Inventors: Sang-Young Lee, Seok-Koo Kim, Jong-Hun Kim, Jang-Hyuk Hong
-
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
-
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
-
Patent number: 7799471Abstract: Disclosed is an electrolyte for a battery comprising: (a) an electrolyte salt; (b) an organic solvent; and (c) a functional electrolyte additive. An electrochemical device comprising the electrolyte is also disclosed. The additive used in the electrochemical device effectively controls the surface of a cathode active material, which otherwise causes side reactions with an electrolyte, due to the basic skeleton structure and polar side branches of the additive. Therefore, it is possible to improve the safety of a battery, while not adversely affecting the quality of a battery.Type: GrantFiled: April 19, 2006Date of Patent: September 21, 2010Assignees: LG Chem, Ltd., Korea Research Institute of Chemical TechnologyInventors: Sang Young Lee, Seok Koo Kim, Jung Don Suk, Hyun Hang Yong, Jang Hyuk Hong, Soon Ho Ahn, Yongku Kang, Changjin Lee, Mi Young Son
-
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
-
Publication number: 20100159314Abstract: Disclosed is an electrode whose surface includes an organic/inorganic composite porous coating layer comprising heat-absorbing inorganic particles and a binder polymer, wherein the heat-absorbing inorganic particle is at least one particle selected from the group consisting of antimony-containing compounds, metal hydroxides, guanidine-based compounds, boron-containing compounds and zinc tartrate compounds. A separator using the heat-absorbing inorganic particles as a component for forming or coating the separator, and an electrochemical device including the electrode and/or the separator are also disclosed. The separator using the heat-absorbing inorganic particles as a component for forming or coating the separator can ensure excellent thermal safety and minimizes degradation of the quality of a battery.Type: ApplicationFiled: February 16, 2007Publication date: June 24, 2010Applicant: LG Chem, Ltd.Inventors: Seok-Koo Kim, Hyun-Min Jang, Sang-Young Lee, Jang-Hyuk Hong