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公开(公告)号：US11973178B2
公开(公告)日：2024-04-30
申请号：US16556670
申请日：2019-08-30
申请人： Zenlabs Energy, Inc.
IPC分类号： H01M10/0525 , H01M4/131 , H01M4/133 , H01M4/134 , H01M4/38 , H01M4/525 , H01M4/62 , H01M4/02
CPC分类号： H01M10/0525 , H01M4/131 , H01M4/133 , H01M4/134 , H01M4/386 , H01M4/525 , H01M4/622 , H01M2004/027 , H01M2004/028 , H01M2300/0031
摘要： Improved negative electrodes can comprise a silicon based active material blended with graphite to provide more stable cycling at high energy densities. In some embodiments, the negative electrodes comprise a blend of polyimide binder mixed with a more elastic polymer binder with a nanoscale carbon conductive additive. Electrolytes have been formulated that provide for extended cycling of cells incorporating a mixture of a silicon-oxide based active material with graphite active material in negative electrodes that can be matched with positive electrodes comprising nickel rich lithium nickel manganese cobalt oxides to cells with unprecedented cycling properties for large capacity cell based on a silicon negative electrode active material.
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公开(公告)号：US11967710B2
公开(公告)日：2024-04-23
申请号：US17152830
申请日：2021-01-20
发明人： Tatsuya Ikenuma
IPC分类号： H01M4/505 , H01M4/04 , H01M4/131 , H01M4/1391 , H01M4/36 , H01M4/62 , H01M10/0525
CPC分类号： H01M4/505 , H01M4/0404 , H01M4/0471 , H01M4/131 , H01M4/1391 , H01M4/366 , H01M4/622 , H01M4/625 , H01M10/0525 , H01M2220/30 , Y02E60/10 , Y02P70/50
摘要： As a positive electrode active material of a secondary battery, a lithium-manganese composite oxide containing lithium, manganese, and an element represented by M, and oxygen is used, and the lithium-manganese composite oxide is covered with reduced graphene oxide. An active material layer including the active material, graphene oxide, a conductive additive, and a binder is formed and soaked in alcohol, and then heat treatment is performed, whereby an electrode with reduced graphene oxide is fabricated.
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公开(公告)号：US11967694B2
公开(公告)日：2024-04-23
申请号：US17049977
申请日：2019-05-06
申请人： I-TEN
发明人： Fabien Gaben
IPC分类号： H01M4/04 , H01G11/24 , H01G11/30 , H01M4/02 , H01M4/131 , H01M4/136 , H01M4/1391 , H01M4/1397 , H01M4/36 , H01M4/485 , H01M4/505 , H01M4/525 , H01M4/58 , H01M10/0525 , H01M10/0585
CPC分类号： H01M4/0404 , H01G11/24 , H01G11/30 , H01M4/0428 , H01M4/043 , H01M4/0457 , H01M4/131 , H01M4/136 , H01M4/1391 , H01M4/1397 , H01M4/366 , H01M4/485 , H01M4/505 , H01M4/525 , H01M4/5825 , H01M10/0525 , H01M10/0585 , H01M2004/021
摘要： The invention relates to methods for producing a porous electrode, said electrode comprising a layer deposited on a substrate, being binder-free and having a porosity of more than 30 and less than 50 volume %, and pores having an average diameter of less than 50 nm, said method comprising:
(a) providing a colloidal suspension containing aggregates or agglomerates of nanoparticles of at least one material P having an average primary diameter of 80 nm or less, said aggregates or agglomerates having an average diameter comprised between 80 nm and 300 nm,
(b) providing a substrate,
(c) depositing a mesoporous, electrode layer on the substrate by electrophoresis, ink-jet, doctor blade, roll coating, curtain coating or dip-coating, from the colloidal suspension provided
in step (a);
(d) drying said layer, preferably in an air flow, and
(e) consolidating the porous, preferably mesoporous electrode layer obtained in step (d) by pressing and/or heating.-
64.发明授权公开(公告)号：US11962012B2
公开(公告)日：2024-04-16
申请号：US17060588
申请日：2020-10-01
发明人： Atsushi Sugihara
IPC分类号： H01M4/62 , H01M4/02 , H01M4/131 , H01M4/1391 , H01M4/485 , H01M10/0525
CPC分类号： H01M4/625 , H01M4/131 , H01M4/1391 , H01M4/485 , H01M10/0525 , H01M2004/027
摘要： A method of producing a negative electrode includes at least the following (A) to (C): (A) mixing powder consisting of lithium titanate oxide particles, a binder, and a solvent to prepare a particle-dispersed liquid; (B) granulating powder consisting of graphite-based particles by using the particle-dispersed liquid to prepare wet granules; and (C) forming the wet granules into a negative electrode composite material layer to produce a negative electrode. The negative electrode composite material layer is formed so as to include the lithium titanate oxide particles in an amount not lower than 2 mass % and not higher than 15 mass % of the total amount of the graphite-based particles and the lithium titanate oxide particles.
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公开(公告)号：US11962007B2
公开(公告)日：2024-04-16
申请号：US18179650
申请日：2023-03-07
发明人： Liangfan Xu , Xing Li , Haizu Jin
IPC分类号： H01M4/525 , H01M4/131 , H01M4/505 , H01M10/0525 , H01M4/02
CPC分类号： H01M4/525 , H01M4/131 , H01M4/505 , H01M10/0525 , H01M2004/021 , H01M2004/028 , H01M2220/20
摘要： The disclosure relates to the field of electrochemistry, and in particular to a lithium-ion secondary battery, a battery module, a battery pack, and a powered device. A lithium-ion secondary battery, includes a bare cell accommodating cavity in which a bare cell group including one or more bare cells A and one or more bare cells B is arranged, wherein the bare cell A includes a first positive electrode sheet including a first positive-electrode active material selected from a single crystal or single crystal-like low-nickel ternary positive electrode material A1, the bare cell B includes a second positive electrode sheet including a second positive-electrode active material and/or a third positive-electrode active material, the second positive-electrode active material is selected from a polycrystalline high-nickel ternary positive electrode material B1, and the third positive-electrode active material is selected from a polycrystalline low-nickel ternary positive electrode material B2.
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公开(公告)号：US20240113348A1
公开(公告)日：2024-04-04
申请号：US17768748
申请日：2020-10-14
申请人： ETH ZURICH
CPC分类号： H01M10/54 , C01G53/50 , H01M4/131 , H01M4/505 , H01M4/525 , H01M4/622 , H01M10/0525 , H01M2004/028
摘要： Slurry for the coating of a cathode of lithium ion battery, wherein the slurry consists of a solid fraction and of a solvent/dispersant fraction, wherein the solid fraction consists of: (a) 90-95% by weight of a lithium metal oxide based particulate electrochemically activatable material; (b) 2-6% by weight of an acidic polyacrylate or polymethacrylate binder material; (c) 2-6% by weight of conductive particulate carbon; (d) 0-2% by weight further additives different from (a)-(c) wherein the sum of (a)-(d) make up 100% of the solid fraction and wherein the solvent/dispersant fraction consists of: (A) 5-25% by weight of an organic alcoholic solvent/dispersant; (B) 5-30% by weight of water (C) 0-5% by weight of solvents/dispersants different from (A) and (B) wherein the percentages of the solvent/dispersant fraction are relative to the 100% solids fraction.
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67.发明授权公开(公告)号：US11949099B2
公开(公告)日：2024-04-02
申请号：US18108515
申请日：2023-02-10
发明人： Chengdu Liang , Yongchao Liu , Na Liu , Yingjie Guan , Qisen Huang , Wei Fu
CPC分类号： H01M4/366 , C01G53/50 , H01M4/131 , H01M4/505 , H01M4/525 , H01M4/5825 , C01P2004/51
摘要： The present invention relates to an electrode active material, a preparation method thereof, an electrode, a battery, and an apparatus. The electrode active material includes: a core and a coating layer, where the core includes a ternary material, the coating layer coats the core, the coating layer includes a reaction product of a sulfur-containing compound and a lithium-containing compound, and the reaction product includes element Li, element S, and element O.
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公开(公告)号：US11949091B2
公开(公告)日：2024-04-02
申请号：US16975820
申请日：2019-01-25
发明人： Masahiro Soga , Taisuke Yamamoto
CPC分类号： H01M4/133 , H01M4/131 , H01M4/134 , H01M10/0525 , H01M10/44 , H01M10/48 , H01M2004/027
摘要： A charging method of a non-aqueous electrolyte secondary battery involves a first charging step in which, defining x as the ratio of the capacity of a silicon compound to the rated capacity Q (0.1≤x≤0.5), charging is performed at a first fixed current value I1st that satisfies the expression below; and a high current charging step in which after completion of the first charging step, charging is performed at a fixed current value Imax higher than the first fixed current value I1st.
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公开(公告)号：US20240105933A1
公开(公告)日：2024-03-28
申请号：US18199157
申请日：2023-05-18
发明人： Hui CAO , Yi YAO , Min HOU , Chan LIU , Yingying GUO , Dandan CHEN
IPC分类号： H01M4/525 , C01G53/00 , H01M4/131 , H01M4/505 , H01M10/0525
CPC分类号： H01M4/525 , C01G53/50 , H01M4/131 , H01M4/505 , H01M10/0525 , H01M2004/028
摘要： The present disclosure discloses a high-safety ternary positive electrode material and a method for preparing the same; wherein the ternary positive electrode material has a chemical composition of Lia(NixCoyMn1-x-y)1-bMbO2-cAc, wherein 0.75≤a≤1.2, 0.75≤x 0, 0≤b≤0.01, 0≤c≤0.2, M is one or more selected from the group consisting of Al, Zr, Ti, Y, Sr, W and Mg, and A is one or more selected from the group consisting of S, F and N; and CMn−(1−x−y)≥0.07; CCo−y≥0.05; 0≤[CMn−(1−x−y)]/(CCo−y)≤2.0. The ternary positive electrode material of the present disclosure is a high-nickel single crystal material with gradient concentration; it has the advantages of high capacity and high thermal stability, and the preparation method is simple, and is suitable for large-scale production.
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公开(公告)号：US20240105921A1
公开(公告)日：2024-03-28
申请号：US18362242
申请日：2023-07-31
CPC分类号： H01M4/366 , C01G53/50 , H01M4/131 , H01M4/505 , H01M4/525 , H01M50/109 , H01M2004/028
摘要： A method for preparing an electrode material includes: a) producing a microspherical precursor by way of co-precipitation; b) forming an intermediate product by calcining the precursor with a stoichiometric amount of sodium carbonate, lithium carbonate and a structural stabilizer; and c) performing an ion exchange process to the intermediate product under molten LiNO3/LiCl to form a lumpy residue. An electrode for lithium-ion battery includes an electrode material having a general formula of Li[Li1/3(TMxAly)]O2, and lithium-ion battery comprising an electrode such as a cathode having the above electrode material are also addressed.
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