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公开(公告)号：US20250070125A1
公开(公告)日：2025-02-27
申请号：US18792343
申请日：2024-08-01
Inventor： Ju Young KIM , Young-Gi LEE , Jaecheol CHOI , Seok Hun KANG
Abstract: A negative electrode active material for an all-solid-state battery may include first graphite particles, second graphite particles, and silicon particles, wherein the first graphite particles have a spheroidal structure, the second graphite particles have a plate structure, the first graphite particles include about 30 to 80 parts by weight with respect to 100 parts by weight of the negative electrode active material, the second graphite particles include about 10 to 60 parts by weight with respect to 100 parts by weight of the negative electrode active material, and the silicon particles include about 5 to 15 parts by weight with respect to 100 parts by weight of the negative electrode active material.
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公开(公告)号：US20230133648A1
公开(公告)日：2023-05-04
申请号：US17715296
申请日：2022-04-07
Inventor： Ju Young KIM , Young Gi LEE , Seok Hun KANG , Young Sam PARK , Dong Ok SHIN , Jae Cheol CHOI
Abstract: A composition of aqueous slurry capable of exerting uniform coating on a hydrophobic separator for a secondary battery is disclosed. Unlike other aqueous polymers, a polyvinyl alcohol-based polymer can be physically and chemically bound to a surface of a hydrophobic separator made of polyolefins such as polyethylene, polypropylene, and the like. Therefore, when the aqueous slurry including the polyvinyl alcohol-based polymer is fabricated and a hydrophobic separator is coated with the aqueous slurry, the hydrophobic separator may be smoothly coated with the aqueous slurry.
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公开(公告)号：US20230125653A1
公开(公告)日：2023-04-27
申请号：US17953936
申请日：2022-09-27
Inventor： Dong Ok SHIN , Myeong Ju LEE , Young-Gi LEE , Seok Hun KANG , Ju Young KIM , Jimin OH
IPC: H01M10/056 , H01M10/0525 , H01M10/0585 , H01M4/62 , H01M4/04
Abstract: Disclosed is a composite electrode for an all-solid-state secondary battery. The composite electrode includes a composite positive electrode and a composite negative electrode, wherein each of the composite positive electrode and the composite negative electrode includes an electrode active material, and an ion-conducting composite binder configured to include an inorganic ion conductor for an ion movement path and an organic ion conductor for binding of the electrode active material.
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公开(公告)号：US20240304856A1
公开(公告)日：2024-09-12
申请号：US18596329
申请日：2024-03-05
Inventor： Seokyoon YOON , YOUNG SAM PARK , Seok Hun KANG , Jaecheol CHOI , Dong Ok SHIN , Young-Gi LEE , Ju Young KIM , Jinyoung KIM
IPC: H01M10/0562 , H01M10/052 , H01M10/058 , H01M50/403 , H01M50/44
CPC classification number: H01M10/0562 , H01M10/052 , H01M10/058 , H01M50/403 , H01M50/44 , H01M2300/0091
Abstract: Provided is a lithium secondary battery including a first electrode, a second electrode spaced apart from the first electrode, a solid electrolyte disposed between the first electrode and the second electrode, wherein the solid electrolyte includes a fibril and a plurality of sulfide particles, the fibril includes polytetrafluoroethylene, the fibril surrounds at least some of the sulfide particles or is in contact with at least some of the sulfide particles.
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公开(公告)号：US20220131181A1
公开(公告)日：2022-04-28
申请号：US17398592
申请日：2021-08-10
Inventor： Dong Ok SHIN , Young-Gi LEE , Myeong Ju LEE , Seok Hun KANG , Kwang Man KIM , Jumi KIM , Ju Young KIM , Jimin OH
IPC: H01M10/0562 , H01M4/04 , H01M10/052 , H01M10/44
Abstract: Provided is a method for manufacturing a solid secondary battery, wherein the method includes forming a composite electrolyte film, and forming a positive electrode and a negative electrode respectively on both surfaces of the composite electrolyte film. The forming of a composite electrolyte film includes preparing inorganic ion conductor powder coated with an ion resistance layer, removing the ion resistance layer to expose the surface of the inorganic ion conductor powder, mixing the inorganic ion conductor powder with an organic ion conductor and a solvent to prepare a composite electrolyte solution, and removing the solvent from the composite electrolyte solution.
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Patent Agency Ranking
公开(公告)号：US20230299349A1
公开(公告)日：2023-09-21
申请号：US18084253
申请日：2022-12-19
Inventor： Jaecheol CHOI , Kwang Man KIM , Young-Gi LEE , Seok Hun KANG , Ju Young KIM , Dong Ok SHIN , Jimin OH
IPC: H01M10/0567 , H01M10/052
CPC classification number: H01M10/0567 , H01M10/052
Abstract: A lithium battery according to the inventive concept includes: a first electrode structure; a second electrode structure separated from the first electrode structure; and an electrolyte between the first electrode structure and the second electrode structure, wherein the electrolyte includes: a lithium salt; an organic solvent; and an additive, the additive includes a polymer additive, and the polymer additive may be a mixture of at least two or more polymers among a halogen-based polymer, a silicon-based polymer and an acrylic polymer, or a copolymer thereof.
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公开(公告)号：US20220131133A1
公开(公告)日：2022-04-28
申请号：US17511084
申请日：2021-10-26
Inventor： Ju Young KIM , Young-Gi LEE , Seok Hun KANG , Dong Ok SHIN , Myeong Ju LEE , Kwang Man KIM , Jimin OH
Abstract: Provided is a composite electrode for an all-solid-state secondary battery including a first active material and a second active material, wherein the first active material and the second active material include different materials from each other, and the content of the first active material is 50 vol % to 98 vol % based on the total volume of the first active material and the second active material, the first active material has a volume change rate of 0 vol % to 30 vol % according to volume expansion/contraction during a charging/discharging process, and the second active material has a volume change rate of 35 vol % to 1000 vol % according to volume expansion/contraction during a charging/discharging process.
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公开(公告)号：US20220115738A1
公开(公告)日：2022-04-14
申请号：US17393029
申请日：2021-08-03
Inventor： Ju Young KIM , Young-Gi LEE , Seok Hun KANG , YOUNG SAM PARK , Kwang Man KIM
IPC: H01M50/403 , H01M4/62 , H01M50/417 , H01M50/451
Abstract: Provided is a method of manufacturing a secondary battery separator including dissolving a polymer binder in water to prepare an aqueous binder solution, dispersing particles in the aqueous binder solution to prepare an aqueous slurry, and preparing a separator substrate, and applying the aqueous slurry on an upper surface and a lower surface of the separator substrate to form an aqueous slurry coating layer, wherein the separator substrate includes a hydrophobic material, the polymer binder is water-soluble, and the aqueous slurry has a viscosity of about 100 cP to about 6000 cP.
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公开(公告)号：US20230343994A1
公开(公告)日：2023-10-26
申请号：US17730106
申请日：2022-04-26
Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE , DAEGU GYEONGBUK INSTITUTE OF SCIENCE AND TECHNOLOGY
Inventor： Ju Young KIM , Young-Gi LEE , Yong Min LEE , Seok Hun KANG , Kwang Man KIM , Ju Mi KIM , Joonam PARK , Dong Ok SHIN , Jimin OH , Myeong Ju LEE
IPC: H01M4/62 , H01M10/0525 , H01M10/0562 , H01M4/583 , H01M4/58
CPC classification number: H01M10/0562 , H01M4/5815 , H01M4/583 , H01M4/622 , H01M10/0525 , H01M2004/021
Abstract: The present disclosure relates to an all-solid-state secondary battery, and more particularly, to an all-solid-state secondary battery including a positive electrode, a negative electrode, and a solid electrolyte layer disposed between the positive electrode and the negative electrode. Here, at least one of the positive electrode and the negative electrode includes a sulfide-based active material, the sulfide-based active material has a particle size of about 50 nm to about 5 µm, and the sulfide-based active material has a grain size of about 1 nm to about 10 nm.
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公开(公告)号：US20230083742A1
公开(公告)日：2023-03-16
申请号：US17901019
申请日：2022-09-01
Inventor： Dong Ok SHIN , Young Gi LEE , Jae Cheol CHOI , Ju Young KIM , Seok Hun KANG , Young Sam PARK
IPC: H01M4/62 , H01M10/0525 , H01M10/44 , H01M10/48
Abstract: An all-solid-state battery for an ion-conducting binder evaluation system for a secondary battery may comprise: an electrode manufactured with an electrode composition, which includes electrode active materials and a binder, so that ion transport in the electrode is dependent on a mechanism of ion diffusion between the electrode active materials by excluding an electrolyte component from the electrode; a counter electrode disposed to face the electrode; and a solid electrolyte layer disposed between the electrode and the counter electrode, wherein a pore density of the electrode, which is an electrolyte-free electrode, is less than or equal to 15% of an electrode bulk density.
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