Patents by Inventor Hochun Lee
Hochun Lee 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: 11699813Abstract: Disclosed is an electrolyte for a secondary battery, and a secondary battery comprising the same, and in particular, to an electrolyte for a secondary battery including an electrolyte salt, an organic solvent and an additive, wherein the additive includes at least one compound selected from the group consisting of a compound having an N—Si-based bond and a compound having an O—Si-based bond.Type: GrantFiled: July 30, 2018Date of Patent: July 11, 2023Assignees: LG ENERGY SOLUTION, LTD., DAEGI GUEONGBUK INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Changhun Park, Hochun Lee, Sungjin Kang, Minchul Jang, Doyeon Kim, Hyeonji Kim
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Publication number: 20200203766Abstract: An electrolyte for a secondary battery, and a secondary battery including the same, and in particular, an electrolyte for a secondary battery including an electrolyte salt, an organic solvent and an additive, wherein the additive includes at least one compound selected from the group consisting of a compound having an N-Si-based bond and a compound having an O-Si-based bond. By including an additive including a specific chemical bond, the electrolyte for a secondary battery suppresses film formation on a multivalent metal surface, and may thereby enhance efficiency and lifetime properties of a multivalent metal secondary battery.Type: ApplicationFiled: July 30, 2018Publication date: June 25, 2020Applicants: LG CHEM, LTD., DAEGU GYEONGBUK INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Changhun PARK, Hochun LEE, Sungjin KANG, Minchul JANG, Doyeon KIM, Hyeonji KIM
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Patent number: 9673484Abstract: Disclosed is a secondary battery including an electrolyte and/or an electrode, the electrolyte including an electrolyte salt and an electrolyte solvent, i) a cyclic carbonate compound substituted with at least one halogen element; and ii) a compound containing a vinyl group in a molecule thereof, and the electrode including a solid electrolyte interface (SEI) layer partially or totally formed on the surface thereof by electrical reduction of the two compounds.Type: GrantFiled: January 28, 2015Date of Patent: June 6, 2017Assignee: LG Chem, Ltd.Inventors: Hochun Lee, Jeong-Ju Cho, Sujin Yoon
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Patent number: 9515351Abstract: Disclosed is a secondary battery including an electrolyte and/or an electrode, the electrolyte including an electrolyte salt and an electrolyte solvent, i) a cyclic carbonate compound substituted with at least one halogen element; and ii) a compound containing a vinyl group in a molecule thereof, and the electrode including a solid electrolyte interface (SEI) layer partially or totally formed on the surface thereof by electrical reduction of the two compounds.Type: GrantFiled: June 10, 2008Date of Patent: December 6, 2016Assignee: LG Chem, Ltd.Inventors: Hochun Lee, Jeong-Ju Cho, Sujin Yoon
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Patent number: 9368835Abstract: Disclosed are an electrolyte for a secondary battery, and a secondary battery including the same, the electrolyte including an electrolyte salt; an electrolyte solvent; and a compound generating heat through oxidation at voltages higher than drive voltage of a cathode, wherein the compound can decompose or evaporate electrolyte components by oxidation heat, thereby causing gas generation. Also, the compound is included in an internal pressure increase accelerant for a battery. Upon overcharge, since a compound subjected to oxidation at voltages higher than normal drive voltage of a cathode generates heat, electrolyte components can be decomposed or evaporated, thereby generating gas by the oxidation heat. Accordingly, it is possible to operate a safety means of a battery, without using an internal pressure increasing material directly generating gas through oxidation at overcharge voltage as the electrolyte additive, and thus to improve the overcharge safety of a secondary battery.Type: GrantFiled: May 16, 2014Date of Patent: June 14, 2016Assignee: LG Chem, Ltd.Inventors: Miyoung Son, Jeong-Ju Cho, Hochun Lee, Joomi Jeon, Sunghoon Yu
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Patent number: 9196922Abstract: Disclosed is a lithium secondary battery comprising a cathode including a lithium-containing transition metal oxide, an anode including a carbon-based material, and a non-aqueous electrolyte with addition of a compound (A) and a compound (B) of formula (1). Incorporation of the compounds (A) and (B) into the electrolyte significantly improves the high-temperature performance and cycle life characteristics of the battery.Type: GrantFiled: November 30, 2012Date of Patent: November 24, 2015Assignee: LG CHEM, LTD.Inventors: Jonghwan Kim, Jisang Yu, Jeong-Ju Cho, Hochun Lee, Joomi Jeon, Yongsu Choi, Ra Young Hwang
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Publication number: 20150147645Abstract: Disclosed is a secondary battery including an electrolyte and/or an electrode, the electrolyte including an electrolyte salt and an electrolyte solvent, i) a cyclic carbonate compound substituted with at least one halogen element; and ii) a compound containing a vinyl group in a molecule thereof, and the electrode including a solid electrolyte interface (SEI) layer partially or totally formed on the surface thereof by electrical reduction of the two compounds.Type: ApplicationFiled: January 28, 2015Publication date: May 28, 2015Applicant: LG Chem, Ltd.Inventors: Hochun Lee, Jeong-Ju Cho, Sujin Yoon
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Publication number: 20140295221Abstract: Disclosed are an electrolyte for a secondary battery, and a secondary battery including the same, the electrolyte including an electrolyte salt; an electrolyte solvent; and a compound generating heat through oxidation at voltages higher than drive voltage of a cathode, wherein the compound can decompose or evaporate electrolyte components by oxidation heat, thereby causing gas generation. Also, the compound is included in an internal pressure increase accelerant for a battery. Upon overcharge, since a compound subjected to oxidation at voltages higher than normal drive voltage of a cathode generates heat, electrolyte components can be decomposed or evaporated, thereby generating gas by the oxidation heat. Accordingly, it is possible to operate a safety means of a battery, without using an internal pressure increasing material directly generating gas through oxidation at overcharge voltage as the electrolyte additive, and thus to improve the overcharge safety of a secondary battery.Type: ApplicationFiled: May 16, 2014Publication date: October 2, 2014Applicant: LG CHEM, LTD.Inventors: Miyoung Son, Jeong-Ju Cho, Hochun Lee, Joomi Jeon, Sunghoon Yu
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Patent number: 8785015Abstract: Disclosed are an electrolyte for a secondary battery, and a secondary battery including the same, the electrolyte including an electrolyte salt; an electrolyte solvent; and a compound generating heat through oxidation at voltages higher than drive voltage of a cathode, wherein the compound can decompose or evaporate electrolyte components by oxidation heat, thereby causing gas generation. Also, the compound is included in an internal pressure increase accelerant for a battery. Upon overcharge, since a compound subjected to oxidation at voltages higher than normal drive voltage of a cathode generates heat, electrolyte components can be decomposed or evaporated, thereby generating gas by the oxidation heat. Accordingly, it is possible to operate a safety means of a battery, without using an internal pressure increasing material directly generating gas through oxidation at overcharge voltage as the electrolyte additive, and thus to improve the overcharge safety of a secondary battery.Type: GrantFiled: May 15, 2008Date of Patent: July 22, 2014Assignee: LG Chem, Ltd.Inventors: Mi Young Son, Jeong-Ju Cho, Hochun Lee, Joomi Jeon, Sunghoon Yu
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Publication number: 20120219853Abstract: Disclosed is a lithium secondary battery comprising a cathode including a lithium-containing transition metal oxide, and a non-aqueous electrolyte with addition of a compound of formula (1). Incorporation of the compound (1) into the electrolyte significantly improves the high-temperature performance and cycle life characteristics of the battery.Type: ApplicationFiled: May 9, 2012Publication date: August 30, 2012Inventors: Jonghwan KIM, Jisang Yu, Jeong-Ju Cho, Hochun Lee, Joomi Jeon, Yongsu Choi, Ra Young HWANG
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Patent number: 8026008Abstract: Disclosed herein is a lithium secondary cell including 20 to 100 wt. % of lithium transition metal oxide represented by a formula of Li1+zNibMncMe1?(b+c)O2, relative to a total amount of a cathode active material, as well as an electrolyte consisting of a lithium salt and a non-aqueous solvent, wherein a first additive to form a protective film (that is, a solid electrolyte interface film: SEI film) over a surface of an anode active material and a second additive to form another SEI film over the surface of the anode active material while inactivating impurities contained in the cathode active material are included in the electrolyte.Type: GrantFiled: March 12, 2010Date of Patent: September 27, 2011Assignee: LG Chem, Ltd.Inventors: Soojin Kim, Hong-Kyu Park, Sung kyun Chang, Jeong-Ju Cho, Hochun Lee
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Publication number: 20110165472Abstract: Disclosed is a lithium secondary battery comprising a cathode including a lithium-containing transition metal oxide, an anode including a carbon-based material, and a non-aqueous electrolyte with addition of a compound of formula (1). Incorporation of the compound (1) into the electrolyte significantly improves the high-temperature performance and cycle life characteristics of the battery.Type: ApplicationFiled: March 4, 2011Publication date: July 7, 2011Inventors: Jonghwan Kim, Jisang Yu, Jeong-Ju Cho, Hochun Lee, Joomi Jeon, Yongsu Choi, Ra Young Hwang
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Publication number: 20110159377Abstract: Disclosed is a secondary battery including an electrolyte and/or an electrode, the electrolyte including an electrolyte salt and an electrolyte solvent, i) a cyclic carbonate compound substituted with at least one halogen element; and ii) a compound containing a vinyl group in a molecule thereof, and the electrode including a solid electrolyte interface (SEI) layer partially or totally formed on the surface thereof by electrical reduction of the two compounds.Type: ApplicationFiled: June 10, 2008Publication date: June 30, 2011Applicant: LG CHEM, LTD.Inventors: Hochun Lee, Jeong-Ju Cho, Sujin Yoon
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Patent number: 7923157Abstract: Disclosed is a lithium secondary battery comprising a cathode including a lithium-containing transition metal oxide, an anode including a carbon-based material, and a non-aqueous electrolyte with addition of a compound of formula (1). Incorporation of the compound (1) into the electrolyte significantly improves the high-temperature performance and cycle life characteristics of the battery.Type: GrantFiled: December 27, 2007Date of Patent: April 12, 2011Assignee: LG Chem, Ltd.Inventors: Jonghwan Kim, Jisang Yu, Jeong-Ju Cho, Hochun Lee, Joomi Jeon, Yongsu Choi, Ra Young Hwang
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Publication number: 20100297481Abstract: Disclosed are an electrolyte for a secondary battery, and a secondary battery including the same, the electrolyte including an electrolyte salt; an electrolyte solvent; and a compound generating heat through oxidation at voltages higher than drive voltage of a cathode, wherein the compound can decompose or evaporate electrolyte components by oxidation heat, thereby causing gas generation. Also, the compound is included in an internal pressure increase accelerant for a battery. Upon overcharge, since a compound subjected to oxidation at voltages higher than normal drive voltage of a cathode generates heat, electrolyte components can be decomposed or evaporated, thereby generating gas by the oxidation heat. Accordingly, it is possible to operate a safety means of a battery, without using an internal pressure increasing material directly generating gas through oxidation at overcharge voltage as the electrolyte additive, and thus to improve the overcharge safety of a secondary battery.Type: ApplicationFiled: May 15, 2008Publication date: November 25, 2010Applicant: LG CHEM, LTD.Inventors: Miyoung Son, Jeong-Ju Cho, Hochun Lee, Joomi Jeon, Sunghoon Yu
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Publication number: 20100297510Abstract: Disclosed herein is a lithium secondary cell including 20 to 100 wt. % of lithium transition metal oxide represented by a formula of Li1+zNibMncMe1?(b+c)O2, relative to a total amount of a cathode active material, as well as an electrolyte consisting of a lithium salt and a non-aqueous solvent, wherein a first additive to form a protective film (that is, a solid electrolyte interface film: SEI film) over a surface of an anode active material and a second additive to form another SEI film over the surface of the anode active material while inactivating impurities contained in the cathode active material are included in the electrolyte.Type: ApplicationFiled: March 12, 2010Publication date: November 25, 2010Applicant: LG CHEM, LTD.Inventors: Soojin KIM, Hong-Kyu PARK, Sung Kyun CHANG, Jeong-Ju CHO, Hochun LEE
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Publication number: 20100209781Abstract: Disclosed is a lithium secondary battery comprising a cathode including a lithium-containing transition metal oxide, an anode including a carbon-based material, and a non-aqueous electrolyte with addition of a compound of formula (1). Incorporation of the compound (1) into the electrolyte significantly improves the high-temperature performance and cycle life characteristics of the battery.Type: ApplicationFiled: December 27, 2007Publication date: August 19, 2010Applicant: LG CHEM, LTD.Inventors: Jonghwan Kim, Jisang Yu, Jeong-Ju Cho, Hochun Lee, Joomi Jeon, Yongsu Choi, Ra Young Hwang
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Patent number: 7592095Abstract: Provided is a lithium secondary battery comprising a controlled-release capsule which continuously releases a desired amount of additives necessary for electrolytes or electrodes at a constant level and is included in an electrolyte and/or an electrode material, thereby providing inherent effects of additives while simultaneously minimizing adverse side reactions of surplus additives, consequently optimizing the battery performance.Type: GrantFiled: July 12, 2006Date of Patent: September 22, 2009Assignee: LG Chem, Ltd.Inventors: Hochun Lee, Hyeongjin Kim
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Publication number: 20070015048Abstract: Provided is a lithium secondary battery comprising a controlled-release capsule which continuously releases a desired amount of additives necessary for electrolytes or electrodes at a constant level and is included in an electrolyte and/or an electrode material, thereby providing inherent effects of additives while simultaneously minimizing adverse side reactions of surplus additives, consequently optimizing the battery performance.Type: ApplicationFiled: July 12, 2006Publication date: January 18, 2007Inventors: Hochun Lee, Hyeongjin Kim