公开(公告)号：US20230118961A1

公开(公告)日：2023-04-20

申请号：US18085160

申请日：2022-12-20

Applicant: 24M Technologies, Inc.

Inventor： Junzheng CHEN ,  Naoki OTA ,  Xiaoming LIU ,  Yuki KUSACHI

IPC: H01M50/451 ,  H01M4/04 ,  H01M4/62 ,  H01M4/58 ,  H01M50/403

Abstract: Embodiments described herein relate generally to electrochemical cells and electrodes with carbon-containing coatings. In some embodiments, an electrochemical cell can include an anode disposed on an anode current collector, a cathode disposed on a cathode current collector, and a separator disposed between the anode and the cathode. The separator has a first side adjacent to the cathode and a second side adjacent to the anode. The electrochemical cell further includes a coating layer disposed on the separator. The coating layer reduces dendrite formation in the electrochemical cell. In some embodiments, the coating layer can include hard carbon. In some embodiments, the coating layer can have a thickness between about 100 nm and about 20 μm. In some embodiments, the coating layer can be disposed on the first side of the separator.

公开(公告)号：US20250125326A1

公开(公告)日：2025-04-17

申请号：US18911725

申请日：2024-10-10

Applicant: 24M Technologies, Inc.

Inventor： Yuki KUSACHI ,  Bradley Richard MILESON ,  Naoki OTA

IPC: H01M4/04 ,  H01M4/02 ,  H01M50/406 ,  H01M50/46

Abstract: Embodiments described herein relate to electrochemical cells that include electrodes having two-dimensional surface patterns. In some aspects, the electrochemical cell can include a cathode current collector, an anode current collector, a cathode material disposed on the cathode current collector, an anode material disposed on the anode current collector, and a separator interposed between the cathode material and the anode material. The cathode material includes a first cathode surface abutting the cathode current collector and having a first cathode surface profile that is substantially flat and planar. The cathode material further includes a second cathode surface opposite to the first cathode surface and having a second cathode surface profile comprising a plurality of projections extending in a direction away from the first cathode surface. The anode material includes a first anode surface abutting the anode current collector and having a first anode surface profile that is substantially flat and planar.

公开(公告)号：US20240039001A1

公开(公告)日：2024-02-01

申请号：US18375654

申请日：2023-10-02

Applicant: 24M Technologies, Inc.

Inventor： Yuki KUSACHI ,  Naoki OTA ,  Junzheng CHEN

IPC: H01M4/66 ,  H01M4/04 ,  H01M4/139

CPC classification number: H01M4/667 ,  H01M4/043 ,  H01M4/0404 ,  H01M4/139 ,  H01M2004/021

Abstract: Embodiments described herein relate to electrochemical cells and electrodes with reinforced current collectors. In some embodiments, an electrode can include a current collector and an electrode material disposed on a first side of the current collector. A reinforcing layer can be disposed on a second side of the current collector. The reinforcing layer can have a modulus of elasticity sufficient to reduce the amount of stretching incident on the current collector during operation of the electrode. In some embodiments, a polymer film can be disposed on the reinforcing material. In some embodiments, the electrode can further include an adhesive polymer disposed between the reinforcing material and the polymer film. In some embodiments, the reinforcing material can have a thickness of less than about 10 μm. In some embodiments, the reinforcing layer can include an adhesive polymer.

公开(公告)号：US20230411695A1

公开(公告)日：2023-12-21

申请号：US18212414

申请日：2023-06-21

Applicant: 24M Technologies, Inc.

Inventor： Kai NARITA ,  Yuki KUSACHI ,  Naoki OTA ,  Junzheng CHEN

IPC: H01M10/0568 ,  H01M50/431 ,  H01M4/04 ,  H01M10/0569 ,  H01M4/66

CPC classification number: H01M10/0568 ,  H01M50/431 ,  H01M4/0438 ,  H01M10/0569 ,  H01M4/663 ,  H01M2004/023

Abstract: Embodiments described herein relate to electrode and electrochemical cell material recycling. Recycling electrode materials can save significant costs, both for quenching chemicals and for the costs of the materials themselves. Separation processes described herein include centrifuge separation, settler separation, flocculant separation, froth flotation, hydro cyclone, vibratory screening, air classification, and magnetic separation. In some embodiments, methods described herein can include any combination of froth flotation, air classification, and magnetic separation. In some embodiments, electrolyte can be separated from active and/or conductive materials via drying, subcritical or supercritical carbon dioxide extraction, solvent mass extraction (e.g., with non-aqueous or aqueous solvents), and/or freeze-drying. By applying these separation processes, high purity raw products can be isolated. These products can be re-used or sold to a third party. Processes described herein are scalable to large cell production facilities.

公开(公告)号：US20230238562A1

公开(公告)日：2023-07-27

申请号：US18101323

申请日：2023-01-25

Applicant: 24M Technologies, Inc.

Inventor： Yuki KUSACHI ,  Junzheng CHEN ,  Naoki OTA ,  Bradley Richard MILESON ,  Matthew Bonju LIM ,  Ryan Michael LAWRENCE

IPC: H01M10/04

CPC classification number: H01M10/0404 ,  H01M2010/4292

Abstract: Embodiments described herein relate to electrochemical cells and production thereof under high pressure. In some aspects, a method of producing an electrochemical cell can include disposing a cathode material onto a cathode current collector to form a cathode, disposing an anode material onto an anode current collector to form an anode, and disposing the anode onto the cathode in an assembly jig with a separator positioned between the anode and the cathode to form an electrochemical cell, the assembly jig applying a force to the electrochemical cell such that a pressure in the cathode material is at least about 3,500 kPa. In some embodiments, the cathode material can be a first cathode material, and the method can further include disposing a second cathode material onto the first cathode material. In some embodiments, the first cathode material can include silicon. In some embodiments, the second cathode material can include graphite.

公开(公告)号：US20220200306A1

公开(公告)日：2022-06-23

申请号：US17687242

申请日：2022-03-04

Applicant: 24M Technologies, Inc.

Inventor： Yuki KUSACHI ,  Naoki OTA ,  Junzheng CHEN

IPC: H02J7/00 ,  H01M50/581 ,  H01M10/0525

Abstract: Embodiments described herein relate to systems and methods of overcharge protection in electrochemical cells by utilizing properties inherent to battery materials. An overcharge inhibitor is disposed in at least one of an anode and a cathode and is configured to inhibit ion transfer when a triggering condition is met. In some embodiments, the triggering condition can be a voltage difference between the anode and the cathode. In some embodiments, the triggering condition can be a temperature in the anode and/or the cathode. In some embodiments, the overcharge inhibitor can include a compound disposed in the cathode and/or the anode configured to generate a gas when the triggering condition is met. In some embodiments, the overcharge inhibitor can include a plurality of particles disposed in the cathode and/or the anode configured to absorb a portion of a liquid electrolyte and expand when the triggering condition is met.

公开(公告)号：US20250046860A1

公开(公告)日：2025-02-06

申请号：US18794233

申请日：2024-08-05

Applicant: 24M Technologies, Inc.

Inventor： Junzheng CHEN ,  Naoki OTA ,  Jeffry DISKO ,  Yuki KUSACHI

IPC: H01M10/056

Abstract: Embodiments described herein relate generally to electrochemical cells including a selectively permeable membrane and systems and methods for manufacturing the same. In some embodiments, the selectively permeable membrane can include a solid-state electrolyte material. In some embodiments, electrochemical cells can include a cathode disposed on a cathode current collector, an anode disposed on an anode current collector, and the selectively permeable membrane disposed therebetween. In some embodiments, the cathode and/or anode can include a slurry of an active material and a conductive material in a liquid electrolyte. In some embodiments, a catholyte can be different from an anolyte. In some embodiments, the catholyte can be optimized to improve the redox electrochemistry of the cathode and the anolyte can be optimized to improve the redox electrochemistry of the anode. In some embodiments, the selectively permeable membrane can be configured to isolate the catholyte from the anolyte.