Patents by Inventor Cheolhoon Choi
Cheolhoon Choi 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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Publication number: 20250149587Abstract: A secondary battery binder composition includes: emulsion polymer particles A having a core-shell structure, which includes a core part and a shell part occupying a part or all of the surface of the core part; and emulsion polymer particles B having no core-shell structure. The binder composition satisfies 50<N(A)/N(B)<400, wherein N(A) is the number of emulsion polymer particles A having a core-shell structure, and N(B) is the number of emulsion polymer particles B having no core-shell structure.Type: ApplicationFiled: April 12, 2023Publication date: May 8, 2025Applicant: LG Chem, Ltd.Inventors: Seon Hee Han, Min Ah Kang, Jung Sup Han, Dong Jo Ryu, Jungeun Woo, Cheolhoon Choi
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Patent number: 12068483Abstract: An electrode binder composition for a rechargeable battery includes emulsion polymer particles comprising a1) first repeat units derived from conjugated diene monomers; one or more second repeat units selected from the group consisting of b1) repeat units derived from aromatic vinyl monomers, b2) repeat units derived from alkyl (meth)acrylate monomers, b3) repeat units derived from (meth)acryl amide monomers, b4) repeat units derived from nitrile based monomers, and b5) repeat units derived from unsaturated carbonic acid monomers; and c1) third repeat units derived from monomers represented by the following Chemical Formula 1: wherein R1 is hydrogen, or a C1-10 alkyl group, X is hydrogen or a methyl group, Y is oxygen atom, or —NR2-, R2 is hydrogen, or a C1-10 alkyl group, and Z is a C1-10 alkyl group.Type: GrantFiled: October 21, 2019Date of Patent: August 20, 2024Assignee: LG Chem, Ltd.Inventors: Min Ah Kang, Dong Jo Ryu, Seon Hee Han, Jung Sup Han, Jeong Man Son, Cheolhoon Choi
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Patent number: 12027709Abstract: An anode for a lithium rechargeable battery and a lithium rechargeable battery including the same are provided. Specifically, a plurality of anode active material layers are sequentially stacked on an anode current collector, and in the innermost layer directly contacting the anode current collector, polyolefin-based polymer is applied as a binder, and in the other layers, heterogeneous polymers are applied as binders.Type: GrantFiled: June 25, 2020Date of Patent: July 2, 2024Assignee: LG Chem, Ltd.Inventors: Jeong Man Son, Jung Sup Han, Dong Jo Ryu, Seon Hee Han, Min Ah Kang, Jungeun Woo, Cheolhoon Choi, Sungjin Lee
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Patent number: 11973227Abstract: Provided are a binder composition for a secondary battery electrode, and an electrode mixture including the same, and more particularly, a binder composition for a secondary battery electrode capable of providing excellent binding strength for an active material and an electrode while having excellent latex stability, thereby improving performance of a secondary battery, and an electrode mixture including the same.Type: GrantFiled: November 1, 2019Date of Patent: April 30, 2024Assignee: LG Chem, Ltd.Inventors: Seon Hee Han, Min Ah Kang, Dong Jo Ryu, Jung Sup Han, Jeong Man Son, Cheolhoon Choi
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Patent number: 11870077Abstract: Provided are a binder composition for a secondary battery and an electrode mixture including the same. More particularly, provided are a binder composition for a secondary battery, the binder composition having excellent characteristics of binding strength, mechanical properties, etc., while maintaining structural stability of an electrode even after repeated charge/discharge cycles, thereby improving performances of a secondary battery, and an electrode mixture including the same.Type: GrantFiled: November 1, 2019Date of Patent: January 9, 2024Inventors: Jung Sup Han, Dong Jo Ryu, Seon Hee Han, Jeong Man Son, Min Ah Kang, Cheolhoon Choi
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Publication number: 20230387415Abstract: The present disclosure relates to a binder for an anode of a secondary battery, an anode for a secondary battery and a secondary battery, wherein the binder comprises a binder particle comprises a copolymer core particle containing a repeating unit derived from an isoprene-based monomer; and a copolymer shell located on the surface of the core particle and containing a repeating unit derived from a butadiene-based monomer. Specifically, the present disclosure is for the purpose of improving the binder applied to the anode of the secondary battery, thereby minimizing the change in volume of the anode and the secondary battery and minimizing the decrease in capacity while increasing the energy density.Type: ApplicationFiled: October 20, 2021Publication date: November 30, 2023Applicant: LG Chem, Ltd.Inventors: Doyun Kim, Jung Sup Han, Min Ah Kang, Cheolhoon Choi
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Publication number: 20230015326Abstract: The present disclosure relates to an anode mixture for a secondary battery, an anode and a secondary battery including the same. Specifically, in one embodiment of the present disclosure, there is provided an anode mixture for a secondary battery including a binder composition, which is a mixture of an AAM/AA/AN copolymer and HASE, in a specific content range.Type: ApplicationFiled: October 22, 2021Publication date: January 19, 2023Applicant: LG Chem, Ltd.Inventors: Cheolhoon Choi, Min Ah Kang, Sungjin Lee
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Publication number: 20220209238Abstract: The present disclosure relates to an electrode binder composition for a rechargeable battery and an electrode mixture comprising the same. The electrode binder composition for a rechargeable battery of the present disclosure not only has excellent properties in terms of binding strength, mechanical properties, and the like, but also can maintain structural stability of an electrode even after repeated charge/discharge cycles, thus improving rechargeable battery performances.Type: ApplicationFiled: May 28, 2020Publication date: June 30, 2022Applicant: LG Chem, Ltd.Inventors: Seon Hee Han, Jung Sup Han, Min Ah Kang, Wooseok Choi, Dong Jo Ryu, Se Eun Lee, Jeong Man Son, Byoung Yun Kim, Cheolhoon Choi, Sungjin Lee
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Publication number: 20220020992Abstract: There is provided an anode binder materials that can be converted into an anode binder having heat resistance, chemical resistance, excellent binding force and durability, and the like, as prerequisites for improving the performances of lithium rechargeable batteries, wherein the anode binder material comprises a vulcanization accelerator comprising a metal-organic framework (MOF); a styrene-butadiene-based copolymer; and sulfur molecule (S8).Type: ApplicationFiled: October 14, 2020Publication date: January 20, 2022Applicant: LG Chem, Ltd.Inventors: Sungjin Lee, Jeong Man Son, Dong Jo Ryu, Seon Hee Han, Jung Sup Han, Min Ah Kang, Jungeun Woo, Cheolhoon Choi
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Publication number: 20210384512Abstract: A slurry composition for an electrode of a secondary battery, has a hydrophobically modified alkali-swellable emulsion (HASE), a poly(meth)acrylic acid and a conductive agent. The slurry composition is capable of realizing excellent electrode adhesion in high energy electrode. The electrode of a secondary battery prepared using the same, and a secondary battery are also provided.Type: ApplicationFiled: December 17, 2019Publication date: December 9, 2021Applicant: LG Chem, Ltd.Inventors: Cheolhoon Choi, Dong Jo Ryu, Seon Hee Han, Jung Sup Han, Jeong Man Son, Min Ah Kang
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Publication number: 20210351410Abstract: An anode for a lithium rechargeable battery and a lithium rechargeable battery including the same are provided. Specifically, a plurality of anode active material layers are sequentially stacked on an anode current collector, and in the innermost layer directly contacting the anode current collector, polyolefin-based polymer is applied as a binder, and in the other layers, heterogeneous polymers are applied as binders.Type: ApplicationFiled: June 25, 2020Publication date: November 11, 2021Applicant: LG Chem, Ltd.Inventors: Jeong Man Son, Jung Sup Han, Dong Jo Ryu, Seon Hee Han, Min Ah Kang, Jungeun Woo, Cheolhoon Choi, Sungjin Lee
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Publication number: 20210313582Abstract: An electrode binder composition for a rechargeable battery includes emulsion polymer particles comprising a1) first repeat units derived from conjugated diene monomers; one or more second repeat units selected from the group consisting of b1) repeat units derived from aromatic vinyl monomers, b2) repeat units derived from alkyl (meth)acrylate monomers, b3) repeat units derived from (meth)acryl amide monomers, b4) repeat units derived from nitrile based monomers, and b5) repeat units derived from unsaturated carbonic acid monomers; and c1) third repeat units derived from monomers represented by the following Chemical Formula 1: wherein R1 is hydrogen, or a C1-10 alkyl group, X is hydrogen or a methyl group, Y is oxygen atom, or —NR2-, R2 is hydrogen, or a C1-10 alkyl group, and Z is a C1-10 alkyl group.Type: ApplicationFiled: October 21, 2019Publication date: October 7, 2021Applicant: LG Chem, Ltd.Inventors: Min Ah Kang, Dong Jo Ryu, Seon Hee Han, Jung Sup Han, Jeong Man Son, Cheolhoon Choi
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Publication number: 20210226219Abstract: Provided are an electrode for a secondary battery, a manufacturing method thereof, and a secondary battery including the same. Specifically, according to one embodiment of the present invention, there is provided an electrode for a secondary battery, the electrode including two kinds of binders of which particle diameters are different from each other and distributions in an electrode mixture layer are different from each other.Type: ApplicationFiled: January 16, 2020Publication date: July 22, 2021Applicant: LG Chem, Ltd.Inventors: Jeong Man Son, Dong Jo Ryu, Seon Hee Han, Jung Sup Han, Min Ah Kang, Cheolhoon Choi
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Publication number: 20210036326Abstract: Provided are a binder composition for a secondary battery and an electrode mixture including the same. More particularly, provided are a binder composition for a secondary battery, the binder composition having excellent characteristics of binding strength, mechanical properties, etc., while maintaining structural stability of an electrode even after repeated charge/discharge cycles, thereby improving performances of a secondary battery, and an electrode mixture including the same.Type: ApplicationFiled: November 1, 2019Publication date: February 4, 2021Applicant: LG Chem, Ltd.Inventors: Jung Sup Han, Dong Jo Ryu, Seon Hee Han, Jeong Man Son, Min Ah Kang, Cheolhoon Choi
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Publication number: 20200411872Abstract: Provided are a binder composition for a secondary battery electrode, and an electrode mixture including the same, and more particularly, a binder composition for a secondary battery electrode capable of providing excellent binding strength for an active material and an electrode while having excellent latex stability, thereby improving performance of a secondary battery, and an electrode mixture including the same.Type: ApplicationFiled: November 1, 2019Publication date: December 31, 2020Applicant: LG Chem, Ltd.Inventors: Seon Hee Han, Min Ah Kang, Dong Jo Ryu, Jung Sup Han, Jeong Man Son, Cheolhoon Choi
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Patent number: 10062906Abstract: Disclosed is an electrode for secondary batteries including an electrode mix, which includes an electrode active material and a binder, coated on a current collector. More particularly, the electrode includes a first electrode mix layer including a first binder, a glass transition temperature (Tg) of which is lower than that of a second binder, and an electrode active material, and coated on the current collector; and a second electrode mix layer including the second binder, a glass transition temperature (Tg) of which is higher than that of the first binder, and an electrode active material, and coated on the first electrode mix layer.Type: GrantFiled: October 1, 2015Date of Patent: August 28, 2018Assignee: LG Chem, Ltd.Inventors: JiYoon Kwon, KyoungHo Kim, Cheolhoon Choi, HoeJin Hah, Seok Koo Kim, Jooyong Song
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Publication number: 20160099470Abstract: Disclosed is an electrode for secondary batteries including an electrode mix, which includes an electrode active material and a binder, coated on a current collector. More particularly, the electrode includes a first electrode mix layer including a first binder, a glass transition temperature (Tg) of which is lower than that of a second binder, and an electrode active material, and coated on the current collector; and a second electrode mix layer including the second binder, a glass transition temperature (Tg) of which is higher than that of the first binder, and an electrode active material, and coated on the first electrode mix layer.Type: ApplicationFiled: October 1, 2015Publication date: April 7, 2016Applicant: LG CHEM, LTD.Inventors: JiYoon Kwon, KyoungHo Kim, Cheolhoon Choi, HoeJin Hah, Seok Koo Kim, Jooyong Song