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1.发明申请公开(公告)号：US20250070391A1
公开(公告)日：2025-02-27
申请号：US18942253
申请日：2024-11-08
Inventor： Hui GU , Lingyan JIANG , Haizu JIN
Abstract: An electrode plate assembly includes an electrode plate and a protection layer. The electrode plate includes an electrode plate body. The electrode plate body includes an end region. The protection layer is fixed onto the electrode plate body, and includes a protection layer body section that covers the end region along an extension direction of the end region. The protection layer body section includes a main end face body protection portion and two lateral face body protection portions connected respectively to two sides of the main end face body protection portion. The main end face body protection portion covers a main end face of the end region.
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公开(公告)号：US20250070240A1
公开(公告)日：2025-02-27
申请号：US18947153
申请日：2024-11-14
Inventor： YASUTAKA TSUTSUI , TATSUYA OSHIMA
IPC: H01M10/0562 , H01M4/62 , H01M10/0525 , H01M10/0585
Abstract: The solid electrolyte composition of the present disclosure includes a solid electrolyte and a dialkylamine-based dispersant. The dialkylamine-based dispersant is represented by the following compositional formula (1), wherein R1 is a hydrocarbon group, and R2 and R3 are each independently an alkyl group having 1 or more and 3 or less carbon atoms.
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公开(公告)号：US20250070180A1
公开(公告)日：2025-02-27
申请号：US18942284
申请日：2024-11-08
Inventor： Qi XING , Chengdong SUN , Huihui LIU , Lianwei DUAN
Abstract: A preparation method of a positive electrode slurry includes a first stirring, a second stirring, a third stirring and a fourth stirring. In the first stirring, a positive electrode active material, a conductive agent and a first binder are mixed and stirred to prepare a dry mixture. In the second stirring, a second binder and a solvent are mixed and stirred to prepare an adhesive solution. In the third stirring, the dry mixture and the adhesive solution are mixed and stirred to prepare a primary slurry. In the fourth stirring, a solvent and the primary slurry are mixed and stirred to prepare a positive electrode slurry. The weight average molecular weight of a polymer in the second binder is smaller than the weight average molecular weight of any polymer in the first binder.
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公开(公告)号：US20250070177A1
公开(公告)日：2025-02-27
申请号：US18813934
申请日：2024-08-23
Applicant: LG Energy Solution, Ltd.
Inventor： Jegon Lee , Jiwon Jeong , Jegwon Lee , Minjune Kim , Qi Lu
IPC: H01M4/62 , H01M4/02 , H01M4/133 , H01M10/0525 , H01M10/42
Abstract: An anode slurry composition includes: an anode active material; a conductive material; and two or more types of cellulose-based binders. The cellulose-based binders include carboxymethyl cellulose (CMC) and cellulose nanofibrils (CNF), and the weight ratio of the cellulose nanofibrils (CNF) to the carboxymethyl cellulose (CMC) in the cellulose-based binders (CNF/CMC) is in the range of about 0.05 to 3.00.
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公开(公告)号：US20250070163A1
公开(公告)日：2025-02-27
申请号：US18724747
申请日：2023-10-26
Applicant: LG Energy Solution, Ltd.
Inventor： Dong Hyun Kim , Houng Sik Yoo , Jong Won Lee , Ji Hee Yoon , Gui Eum Yang , Sang Hoon Choy , Hyeon Choi , O Jong Kwon , Yong Hee Kang
Abstract: A positive electrode includes a current collector, a first positive electrode active material layer, and a second positive electrode active material layer. The first positive electrode active material layer is formed on the current collector and the second positive electrode active material layer is formed on the first positive electrode active material layer. The first and second positive electrode active material layers each include lithium iron phosphate, a fluorine-based binder, a rubber-based binder, and a conductive material. The rubber-based binder includes a first hydrogenated nitrile butadiene rubber and a second hydrogenated nitrile butadiene rubber A ratio (P2/P1) of the weight P2 of fluorine contained in the second positive electrode active material layer to the weight P1 of fluorine contained in the first positive electrode active material layer is 1 or less.
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Patent Agency Ranking
公开(公告)号：US20250070143A1
公开(公告)日：2025-02-27
申请号：US18948493
申请日：2024-11-15
Inventor： Wenlong Bai , Yiyang Wu , Baozhen Wu , Yonghuang Ye , Xingyan You , Yuwen Wang , Wei Zheng , Kai Wu
Abstract: The present application provides a composite negative electrode active material and a preparation method therefor, a negative electrode plate comprising same, a secondary battery and a power consuming device. The composite negative electrode active material comprises a negative electrode active material substrate and a conductive polymer layer on the surface of the negative electrode active material substrate, wherein the cyclic voltammetry curve of the composite negative electrode active material has an oxidation peak within a range of 3.2 V-3.6 V and a reduction peak within a range of 2.1 V-2.6 V. The composite negative electrode active material provided by the present application can combine a low volume expansion, a high capacity per gram and a high initial coulombic efficiency, thus enabling a secondary battery to combine a low volume expansion, a high energy density and a long cycle life.
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公开(公告)号：US20250066220A1
公开(公告)日：2025-02-27
申请号：US18418877
申请日：2024-01-22
Applicant: Nankai University
Inventor： Fujun Li , Suning Gao , Tong Zhang , Xiangshuai Wei , Wei Hu
Abstract: The present invention belongs to the technical field in sodium ion battery, which includes material synthesis, and discloses a high-entropy cathode material with a chemical formula of Na1-xKxNiyFezMndTimZn1-y-z-d-mO2, wherein 0
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公开(公告)号：US12237513B2
公开(公告)日：2025-02-25
申请号：US17604156
申请日：2020-03-05
Applicant: DKS Co. Ltd.
Inventor： Ayano Sofue , Toshiya Watanabe , Yasuteru Saito
Abstract: Provided are an electrode binder composition that provides an electrode that exhibits high durability even when an active material that shows a large volume change is used, a power storage device electrode produced using the electrode binder composition, and a power storage device including the power storage device electrode. An electrode binder composition contains (A) one or more polymers selected from the group consisting of fluoropolymers, butadiene polymers, and thermoplastic elastomers, (B) a fibrous nanocarbon material having an average fiber diameter of 0.5 nm or more and 20 nm or less and a fiber length of 0.5 μm or more and 1 mm or less, (C) a cellulose material, (D) a nanocellulose fiber, and (E) water. The mass ratio between (A) and (B) is (A)/(B)=60/40 to 98/2.
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公开(公告)号：US12237512B2
公开(公告)日：2025-02-25
申请号：US17608073
申请日：2020-12-22
Applicant: LG ENERGY SOLUTION, LTD.
Inventor： Yo Han Kwon , Joonwon Lim , Min Chul Jang , Sun Kyu Kim
Abstract: Disclosed is a binder composition for a negative electrode which includes a binder polymer containing at least one first functional group selected from the group consisting of a hydroxy group and a carboxyl group, and a crosslinked polymer containing at least one second functional group selected from the group consisting of an amino group and an isocyanate group, wherein the crosslinked polymer is present in an amount of 1.5 parts by weight to 8.5 parts by weight based on 100 parts by weight of the binder polymer.
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公开(公告)号：US12237491B2
公开(公告)日：2025-02-25
申请号：US17886555
申请日：2022-08-12
Applicant: Ford Global Technologies, LLC
Inventor： Gunho Kwak , Patrick Pietrasz , Chi Paik
Abstract: A method for forming one or more layers of a lithium-ion battery includes a step of sequentially depositing a wet coating and a free-standing material layer onto a moving substrate to form a first bilayer on the substrate. The first bilayer including a wet coating-derived layer and the free-standing material layer. The first bilayer is heat roll pressed to form a second bilayer in which the wet coating-derived layer is at least partially dried and adhered to the free-standing material layer.
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