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公开(公告)号：US20250054959A1
公开(公告)日：2025-02-13
申请号：US18713082
申请日：2021-11-17
Applicant: CHANG SUNG CO.
Inventor： Tae Kyung LEE , Seung Nam YANG , Nam Kyu CHOI
IPC: H01M4/46 , H01M4/02 , H01M4/36 , H01M10/052 , H01M50/109
Abstract: An embodiment provides: a negative electrode active material for a lithium secondary battery, wherein the negative electrode active material has silicon nanoparticles distributed in a silicon alloy and contains a Si—Al—Ni—B composition; and a method for producing same. Accordingly, a negative electrode active material for a lithium secondary battery can be provided, wherein the negative electrode active material has a controlled volume expansion rate and excellent electrical properties.
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22.发明申请
公开(公告)号：US20250054948A1
公开(公告)日：2025-02-13
申请号：US18529028
申请日：2023-12-05
Applicant: HYUNDAI MOTOR COMPANY , KIA CORPORATION , WONIK QnC CORPORATION
Inventor： Je Sik Park , Hong Seok Min , Sung Woo Noh , Jeong Hyun Seo , Im Sul Seo , Ju Yeong Seong , Chung Bum Lim , Hyuk Chun Kwon , Ho Chang Lee , Seong Uk Oh , Ji Su Kim , Jong Hyun Park
IPC: H01M4/36 , C01B25/30 , C01B33/32 , C01G25/00 , C01G33/00 , C01G53/00 , H01M4/485 , H01M4/505 , H01M4/525
Abstract: A cathode active material with controlled rheological properties for lithium secondary batteries. In particular, the cathode active material for a lithium secondary battery includes: a core part comprising a lithium metal oxide; and a coating layer covering at least a portion of a surface of the core part and comprising an inorganic compound.
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公开(公告)号：US20250054946A1
公开(公告)日：2025-02-13
申请号：US18719432
申请日：2022-12-19
Applicant: Panasonic Energy Co., Ltd.
Inventor： Sho Urata
Abstract: A positive electrode for secondary is provided with a positive electrode mixture layer, and is characterized in that: the positive electrode mixture layer contains a positive electrode active material A which is composed of single crystalline particles of a lithium-containing composite oxide and a positive electrode active material B which is composed of polycrystalline particles of a lithium-containing composite oxide; the positive electrode active material A has a carbonaceous coating film that covers the surface of each of the single crystalline particles; the coating amount of the carbonaceous coating film covering the surfaces of the single crystalline particles is 1% by mass to 10% by mass relative to the mass of the lithium-containing composite oxide of the single crystalline particles; and with respect to the positive electrode active material B, the surfaces of the polycrystalline particles are not covered by a carbonaceous coating film.
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24.发明授权
公开(公告)号：US12224434B2
公开(公告)日：2025-02-11
申请号：US17140088
申请日：2021-01-03
Inventor： Chengdu Liang , Yingjie Guan , Yuzhen Zhao , Yan Wen , Qisen Huang
Abstract: The present application provide a silicon-oxygen compound, a preparation method thereof and related secondary battery, battery module, battery pack, and device. The silicon-oxygen compound provided by the present application has a formula of SiOx, in which x satisfies 0
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公开(公告)号：US12224430B2
公开(公告)日：2025-02-11
申请号：US17506720
申请日：2021-10-21
Inventor： Izuru Sasaki
IPC: H01M4/36 , H01M4/02 , H01M4/131 , H01M4/525 , H01M10/0525 , H01M10/0562
Abstract: A positive electrode material contains at least one positive electrode active material, a solid electrolyte, and a coating material. The solid electrolyte is represented by formula (1), LiαMβXγ (1) where α, β, and γ are each independently a value greater than 0, M includes at least one element selected from the group consisting of non-Li metals and metalloids, and X includes at least one selected from the group consisting of F, Cl, Br, and I. The coating material covers the surface of the positive electrode active material and contains lithium carbonate.
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公开(公告)号：US12224424B2
公开(公告)日：2025-02-11
申请号：US18522966
申请日：2023-11-29
Applicant: LG Energy Solution, Ltd.
Inventor： Chang Wan Koo , Ki Tae Kim , Sang Hoon Choy
IPC: H01M4/02 , H01M4/04 , H01M4/139 , H01M4/36 , H01M4/62 , H01M10/0525 , H01M10/056
Abstract: The present invention relates to a method of preparing a positive electrode which includes forming a solid electrolyte by mixing a lithium salt and a polymer for a solid electrolyte in a dry atmosphere, forming a dry mixture by stirring after adding a conductive agent and a positive electrode active material to the solid electrolyte in a dry atmosphere, and pressing after coating a current collector with the dry mixture.
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公开(公告)号：US20250046785A1
公开(公告)日：2025-02-06
申请号：US18920051
申请日：2024-10-18
Applicant: LG ENERGY SOLUTION, LTD.
Inventor： Dongwook LEE , Kwonnam SOHN
IPC: H01M4/133 , H01M4/02 , H01M4/131 , H01M4/134 , H01M4/136 , H01M4/1391 , H01M4/1393 , H01M4/1395 , H01M4/1397 , H01M4/36 , H01M4/58 , H01M10/052
Abstract: A positive electrode active material for a lithium secondary battery including a carbon material impregnated with catalyst particles, and a sulfur-carbon composite, a preparation method thereof, and a positive electrode for a lithium secondary battery, and the lithium secondary battery including the same.
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公开(公告)号：US12218346B2
公开(公告)日：2025-02-04
申请号：US16113676
申请日：2018-08-27
Applicant: Nanotek Instruments, Inc.
Inventor： Hui He , Aruna Zhamu , Bor Z. Jang
IPC: H01M4/38 , H01M4/133 , H01M4/134 , H01M4/36 , H01M4/40 , H01M4/62 , H01M10/0525 , H01M10/42 , H01M4/02 , H01M4/86
Abstract: The invention provides a method of improving the cycle-life of a lithium metal secondary battery. The method comprises implementing an anode-protecting layer between an anode active material layer and a porous separator/electrolyte, wherein the anode-protecting layer or cathode-protecting layer comprises a conductive sulfonated elastomer composite having from 0.01% to 40% by weight of a conductive reinforcement material and from 0.01% to 40% by weight of an electrochemically stable inorganic filler dispersed in a sulfonated elastomeric matrix material and the protecting layer has a thickness from 1 nm to 100 μm, a fully recoverable tensile strain from 2% to 500%, a lithium ion conductivity from 10−7 S/cm to 5×10−2 S/cm, and an electrical conductivity from 10−7 S/cm to 100 S/cm when measured at room temperature.
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29.发明授权
公开(公告)号：US12218344B2
公开(公告)日：2025-02-04
申请号：US17568898
申请日：2022-01-05
Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
Inventor： Sarah H. Tolbert , Terri C. Lin
IPC: H01M4/36 , H01M4/58 , H01M4/62 , H01M10/0525 , H01M4/02
Abstract: Nanoporous carbon coated lithium vanadium fluorophosphate materials and cathodes for fast charging li-ion batteries are described. Formation of the materials using polymer-templating is also described.
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公开(公告)号：US12218337B2
公开(公告)日：2025-02-04
申请号：US17350248
申请日：2021-06-17
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Tatsuya Ikenuma , Kazutaka Kuriki
Abstract: To provide a highly reliable power storage device. To provide a long-life power storage device. To provide a power storage device electrode having high adhesion with a current collector. To reduce or inhibit electrochemical decomposition of an electrolytic solution or the like on a surface of an electrode. The power storage device electrode includes a current collector and a second electrode layer provided over the current collector and including a second binder and an active material. A first electrode layer including a first binder and conductive particles is provided between the current collector and the second electrode layer. At least part of a surface of the active material is provided with a coating film, and the coating film is porous.
