公开(公告)号：US20250070261A1

公开(公告)日：2025-02-27

申请号：US18896564

申请日：2024-09-25

Applicant: 24M Technologies, Inc.

Inventor： Raymond ZAGARS ,  Matthew R. TYLER ,  Neil AXELSEN ,  Nathan COSTA ,  Madeleine FINKENAUR ,  Gregory MEHOS ,  Hasan SIDDIQUI ,  Glenn JORDAN

IPC: H01M10/0585 ,  H01M4/04 ,  H01M4/139 ,  H01M50/105 ,  H01M50/406

Abstract: Embodiments described herein relate generally to systems and methods for continuously and/or semi-continuously manufacturing electrochemical cells with semi-solid electrodes. In some embodiments, a method can include mixing an active material, a conductive material, and an electrolyte to form a semi-solid electrode material. The method further includes drawing a vacuum on the semi-solid electrode material, compressing the semi-solid electrode material to form an electrode brick, and dispensing a portion of the electrode brick onto a current collector via a dispensation device to form an electrode. In some embodiments, the current collector is disposed on a pouch material. In some embodiments, the dispensation device includes a top blade for top edge control and two side plates for side edge control. In some embodiments, the method can further include conveying the electrode through the top blade and the two side plates to shape the electrode.

公开(公告)号：US20250070179A1

公开(公告)日：2025-02-27

申请号：US18946969

申请日：2024-11-14

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED

Inventor： Shaohua AI ,  Chengdong SUN ,  Yi ZHENG ,  Yu CHEN ,  Qi ZENG ,  Yuxi ZHANG ,  Xin ZHOU

IPC: H01M4/62 ,  H01M4/02 ,  H01M4/04 ,  H01M4/13 ,  H01M4/139 ,  H01M10/0587

Abstract: The present application discloses an electrode slurry, comprising an electrode active material, a binder composition and a solvent; the binder composition comprises a thermally crosslinked polymer and a thermal crosslinking agent, wherein the thermally crosslinked polymer comprises one or more of an epoxy resin, an acrylic-capped prepolymer and an acrylate-capped prepolymer.

公开(公告)号：US20250054938A1

公开(公告)日：2025-02-13

申请号：US18636594

申请日：2024-04-16

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Masashi UEDA ,  Shinji KOJIMA ,  Tomoko HIGO

IPC: H01M4/04 ,  H01M4/13 ,  H01M4/139 ,  H01M4/36 ,  H01M4/62

Abstract: A method of fabricating an electrode includes: fabricating a first electrode layer disposed on a current collector; and fabricating a second electrode layer disposed on the first electrode layer. The first electrode layer is formed by electrostatic deposition, wet deposition, or rolled film formation. The second electrode layer is formed by rolled film formation. When the first electrode layer is fabricated by rolled film formation, at least part of a surface of active material particles used in the rolled film formation is coated with a resin that is different from polytetrafluoroethylene.

公开(公告)号：US12224421B2

公开(公告)日：2025-02-11

申请号：US17493272

申请日：2021-10-04

Applicant: LG Energy Solution, Ltd.

Inventor： Young In Hu ,  Kyu Bok Yeon

IPC: H01M4/04 ,  B29C55/18 ,  H01M4/139 ,  H01M10/0587

Abstract: The present invention relates to a method of rolling an electrode including a speed-changing rolling section, including: a step of inputting an electrode to a rolling device including at least one pair of rolling rolls; and a step of automatically adjusting a space between the rolling rolls according to a space compensation value between the rolling rolls according to a rolling speed change.

公开(公告)号：US12218357B2

公开(公告)日：2025-02-04

申请号：US17599277

申请日：2020-03-06

Applicant: ENEOS MATERIALS CORPORATION

Inventor： Keigo Aso ,  Taira Ohashi ,  Motohisa Azechi ,  Daisuke Sukeguchi ,  Shingo Itai

IPC: H01M4/62 ,  C08F220/18 ,  H01M4/139 ,  H01M10/0562

Abstract: A binder for an all-solid-state secondary battery that can control a decrease in ionic conductivity, is excellent in binding properties and oxidation resistance, and can realize favorable cycle life characteristics even under a high voltage; and a binder composition for an all-solid-state secondary battery containing the binder. A binder for an all-solid-state secondary battery includes a polymer (A) which includes a repeating unit (a1) derived from an unsaturated carboxylic acid ester (excluding an unsaturated carboxylic acid ester having a hydroxyl group) and a repeating unit (a2) derived from a compound having a tertiary amino group, a weight-average molecular weight (Mw) of the polymer (A) being from 250000 to 3000000, and an endothermic peak being observed at −10° C. or lower when differential scanning calorimetry (DSC) is performed on the polymer (A) in accordance with JIS K 7121.

公开(公告)号：US12218339B2

公开(公告)日：2025-02-04

申请号：US17638557

申请日：2020-06-25

Applicant: MUSASHI ENERGY SOLUTIONS CO., LTD.

Inventor： Hirobumi Suzuki ,  Kenji Kojima ,  Masaya Naoi ,  Nobuo Ando ,  Hiroki Yakushiji ,  Kazunari Aita ,  Masahiro Yamamoto

IPC: H01M4/139 ,  H01M4/02 ,  H01M4/04 ,  H01M10/058

Abstract: A doped electrode is manufactured by an electrode manufacturing method. The doped electrode includes an active material doped with an alkali metal. In the electrode manufacturing method, a dope solution is brought into contact with an electrode. The electrode includes a current collector and an active material layer. The active material layer is formed on a surface of the current collector and includes the active material. The dope solution includes an alkali metal ion and flows. In the electrode manufacturing method, for example, the alkali metal is electrically doped to the active material using a counter electrode member arranged to face the electrode.

公开(公告)号：US20250038166A1

公开(公告)日：2025-01-30

申请号：US18918551

申请日：2024-10-17

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED

Inventor： Xingbu Chen ,  Xin Sun ,  Lili Wu ,  Rundie Liu ,  Peidong Song

IPC: H01M4/04 ,  H01M4/139 ,  H01M10/04 ,  H01M10/0587 ,  H01M50/107 ,  H01M50/152 ,  H01M50/627

Abstract: A battery cell, a battery, and an electrical device are described. The battery cell includes an electrode assembly. The electrode assembly is wound along a winding direction to form a jelly-roll structure containing a roll core cavity in a central region. The battery cell further includes a gel-state central column packed in the roll core cavity and formed by coagulation. The central roll core cavity formed by winding the electrode assembly is packed with the gel material that coagulates to form a gel-state central column. In this way, the central column can support the electrode assembly after coagulating in shape, thereby improving the deformation resistance of the electrode assembly, and reducing the risk of central collapse of the electrode assembly. In addition, when the electrode assembly is squeezed, the central column can serve as an elastic cushion to some extent.

公开(公告)号：US12211986B2

公开(公告)日：2025-01-28

申请号：US18653528

申请日：2024-05-02

Applicant: Northvolt AB

Inventor： Sean Stephenson ,  Neil Carlisle

IPC: H01M4/00 ,  H01M4/04 ,  H01M4/139

Abstract: A method and control arrangement for monitoring coating quality during production of electrodes of secondary cells. The production of electrodes comprises a coating process including coating slurry onto a conductive substrate and drying the coated conductive substrate, and a calendering process. The method comprises measuring (S1), during the coating process and/or calendering process, power consumption of one or more electrical components used for performing the coating process and/or calendering process and evaluating (S3) the coating quality by analyzing the measured power consumption using coating quality criteria, wherein the coating quality criteria defines coating quality of the secondary cells based on measured power consumption of the one or more electrical components.

公开(公告)号：US12206070B2

公开(公告)日：2025-01-21

申请号：US17265400

申请日：2019-10-30

Applicant: LG CHEM, LTD.

Inventor： Insung Uhm ,  Yohan Kwon ,  Eunkyung Park ,  Jae Hyun Lee ,  Minchul Jang ,  Byoungkuk Son ,  Seongmin Ha

IPC: H01M10/0567 ,  H01M4/04 ,  H01M4/139 ,  H01M10/052 ,  H01M10/0565 ,  H01M10/0568 ,  H01M10/44

Abstract: A lithium secondary battery including a positive electrode, a negative electrode comprising a negative electrode current collector, and an electrolyte interposed between the positive electrode and negative electrode. The lithium metal is formed on the negative electrode current collector by lithium ions migrating toward the negative electrode current collector after charge. The electrolyte comprises a sacrificial salt having an oxidation potential of 5 V or less with respect to lithium. The lithium secondary battery forms lithium metal while being blocked from the atmosphere, and thereby improves an existing problem caused by high reactivity of lithium metal. By including a sacrificial salt in an electrolyte, lithium consumption caused by an irreversible reaction of a negative electrode is reduced, which may prevent decline in the battery capacity and lifetime properties.

公开(公告)号：US20250023111A1

公开(公告)日：2025-01-16

申请号：US18769254

申请日：2024-07-10

Applicant: Natron Energy, Inc.

Inventor： Colin Deane Wessells ,  Nicole J. Escorcia ,  Daniel Friebel ,  Wentao Song ,  Aniruddh Shrivastava ,  Ashenafi Damtew Mamuye

IPC: H01M10/24 ,  H01M4/04 ,  H01M4/13 ,  H01M4/139 ,  H01M4/583 ,  H01M4/62 ,  H01M4/66 ,  H01M10/054

Abstract: A system and method for implementing and manufacturing a hierarchy system for use with a TMCCC-containing electrically-conductive structure (e.g., an electrode) as well as methods for use and manufacturing of such structures and electrochemical cells including these devices. Structures and methods include a coordination complex having LxMyNzTia1Va2Cra3Mna4Fea5Coa6Nia7Cua8Zna9Caa10Mga11[R(CN)6]b(H2O)c;. The method includes binding electrochemically active material to produce a hierarchical structure, the hierarchical structure having a plurality of primary crystallites having a size D1, the plurality of these primary crystallites agglomerated into a set of agglomerates each agglomerate having a size D2>D1.