公开(公告)号：US20240106003A1

公开(公告)日：2024-03-28

申请号：US18222217

申请日：2023-07-14

Applicant: 24M Technologies, Inc. ,  Kyocera Corporation

Inventor： Junji ARANAMI ,  Junzheng CHEN ,  Naoki OTA

IPC: H01M10/0585 ,  H01M4/133 ,  H01M4/136 ,  H01M4/58 ,  H01M4/587 ,  H01M10/0525

CPC classification number: H01M10/0585 ,  H01M4/133 ,  H01M4/136 ,  H01M4/5825 ,  H01M4/587 ,  H01M10/0525

Abstract: Embodiments described herein relate to divided energy electrochemical cells and electrochemical cell systems. Divided energy electrochemical cells and electrochemical cell systems include a first electrochemical cell and a second electrochemical cell connected in parallel. Both electrochemical cells include a cathode disposed on a cathode current collector, an anode disposed on an anode current collector, and a separator disposed between the anode and the cathode. In some embodiments, the first electrochemical cell can have different performance properties from the second electrochemical cell. For example, the first electrochemical cell can have a high energy density while the second electrochemical cell can have a high power density. In some embodiments, the first electrochemical cell can have a battery chemistry, thickness, or any other physical/chemical property different from those properties of the second electrochemical cell.

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：US20230369719A1

公开(公告)日：2023-11-16

申请号：US18120029

申请日：2023-03-10

Applicant: 24M Technologies, Inc.

Inventor： Ricardo BAZZARELLA ,  Junzheng CHEN

IPC: H01M50/30 ,  H01M50/183 ,  H01M50/502 ,  H01M10/0587 ,  H01M50/20

CPC classification number: H01M50/394 ,  H01M50/183 ,  H01M50/502 ,  H01M10/0587 ,  H01M50/20

Abstract: Embodiments described herein relate generally to electrochemical cells having dual electrolytes, systems of such electrochemical cells, and methods for manufacturing the same. In some embodiments, electrochemical cells can include a cathode disposed on a cathode current collector, an anode disposed on an anode current collector, and a separator disposed therebetween. In some embodiments, the separator can include materials that fluidically and/or chemically isolate the anode from the cathode. 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, the anode can be fluidically coupled to an anode degassing port. In some embodiments, the cathode can be fluidically coupled to a cathode degassing port.

公开(公告)号：US20230352755A1

公开(公告)日：2023-11-02

申请号：US18128452

申请日：2023-03-30

Applicant: 24M Technologies, Inc.

Inventor： Ruben D. ARAGON ,  Matthew R. TYLER ,  Kypros D. PANTELI ,  Hasan SIDDIQUI ,  Evan RUGEN ,  Gregory MEHOS ,  Junzheng CHEN ,  Ashley MORISHIGE ,  Christian EBNER

IPC: H01M10/54

CPC classification number: H01M10/54

Abstract: Embodiments described herein relate to recycling of electrochemical cell materials. In some aspects, a method can include separating a stack pouch material from an electrochemical cell stack, separating a plurality of unit cells from the electrochemical cell stack into individual unit cells, cutting within a heat seal of a cell pouch of a unit cell from the plurality of unit cells, separating a cathode material and a cathode current collector away from a separator, an anode material, and an anode current collector of the unit cell, placing the cathode material and the cathode current collector in a solvent bath with the cathode current collector facing downward, separating the cathode material from the cathode current collector via an ultrasonic probe, separating solids and liquids of the cathode material, drying the solids of the cathode material, and incorporating the solids of the cathode material into a new cathode mixture.

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：US20220238923A1

公开(公告)日：2022-07-28

申请号：US17581583

申请日：2022-01-21

Applicant: 24M Technologies, Inc.

Inventor： Junzheng CHEN ,  Landon OAKES ,  Naoki OTA ,  Matthew Bonju LIM

IPC: H01M10/0585 ,  H01M4/04 ,  H01M10/0569 ,  H01M10/0568

Abstract: Embodiments described herein relate generally to semi-solid electrodes, and methods of producing the same. In some embodiments, a method of forming a semi-solid electrode can include mixing an active material, a conductive material, and an electrolyte solvent to produce a semi-solid material. The electrolyte solvent is free of electrolyte salt. The method further includes dispensing the semi-solid material onto a current collector and wetting the semi-solid material with an electrolyte solution to form the semi-solid electrode. In some embodiments, the wetting can be via spraying. In some embodiments, the electrolyte salt can have a concentration in the electrolyte solution of at least about 1 M, at least about 2M, or at least about 3 M. In some embodiments, the solvent can include ethyl methyl carbonate (EMC), ethylene carbonate (EC), propylene carbonate (PC), dimethyl carbonate (DMC), gamma-Butyrolactone (GBL), or any combination thereof.

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：US20210249695A1

公开(公告)日：2021-08-12

申请号：US17169862

申请日：2021-02-08

Applicant: 24M Technologies, Inc. ,  Kyocera Corporation

Inventor： Junji ARANAMI ,  Junzheng CHEN ,  Naoki OTA

IPC: H01M10/0585 ,  H01M4/133 ,  H01M4/136 ,  H01M4/587 ,  H01M4/58 ,  H01M10/0525

Abstract: Embodiments described herein relate to divided energy electrochemical cells and electrochemical cell systems. Divided energy electrochemical cells and electrochemical cell systems include a first electrochemical cell and a second electrochemical cell connected in parallel. Both electrochemical cells include a cathode disposed on a cathode current collector, an anode disposed on an anode current collector, and a separator disposed between the anode and the cathode. In some embodiments, the first electrochemical cell can have different performance properties from the second electrochemical cell. For example, the first electrochemical cell can have a high energy density while the second electrochemical cell can have a high power density. In some embodiments, the first electrochemical cell can have a battery chemistry, thickness, or any other physical/chemical property different from those properties of the second electrochemical cell.