公开(公告)号：US20240047832A1

公开(公告)日：2024-02-08

申请号：US18228921

申请日：2023-08-01

Applicant: 24M Technologies, Inc.

Inventor： Chad Alan HARTZOG ,  Mark YOUNG ,  Kenneth Douglas COBB ,  Junzheng CHEN

IPC: H01M50/503 ,  H01M50/51 ,  H01M50/209 ,  H01M50/264

CPC classification number: H01M50/503 ,  H01M50/51 ,  H01M50/209 ,  H01M50/264

Abstract: Embodiments described herein relate to electrochemical cells and multicells. A multicell can include a cell packaging that includes two or more electrochemical cells connected in series internal to the cell packaging. In some aspects, an apparatus includes a plurality of electrochemical cell stacks each including a plurality of electrochemical cells connected in series, a first electrically conductive plate including a first section and a second section, and a second electrically conductive plate. The first section of the first electrically conductive plate is in contact with a first terminal end of a first electrochemical cell stack from the plurality of electrochemical cell stacks. The second section of the first electrically conductive plate is in contact with a first terminal end of a second electrochemical cell stack from the plurality of electrochemical cell stacks.

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：US20210265631A1

公开(公告)日：2021-08-26

申请号：US17181554

申请日：2021-02-22

Applicant: 24M Technologies, Inc.

Inventor： Junzheng CHEN ,  Landon OAKES ,  Naoki OTA

IPC: H01M4/62 ,  H01M50/536 ,  H01M50/105 ,  H01M4/04

Abstract: Embodiments described herein relate to electrochemical cells with one or more electrodes coupled directly to a film material, and methods of making the same. In some embodiments, an electrochemical cell includes a first electrode material disposed on a first current collector, wherein the first current collector is coupled to a first non-conductive film. In some embodiments, a first tab is coupled to the first current collector. The electrochemical cell further includes a second electrode material capable of taking up or releasing ions during operation of the electrochemical cell. The second electrode material is coupled directly to a second non-conductive film. A second tab is electronically coupled to the second electrode material. A separator is disposed between the first electrode material and the second electrode material. In some embodiments, the second tab can be coupled directly to the second electrode material.

公开(公告)号：US20240372212A1

公开(公告)日：2024-11-07

申请号：US18777389

申请日：2024-07-18

Applicant: 24M Technologies, Inc.

Inventor： Junzheng CHEN ,  Naoki OTA ,  Jeffry DISKO ,  Anthony D'ANGELO

IPC: H01M50/414 ,  H01M4/131 ,  H01M4/136 ,  H01M4/1391 ,  H01M4/1397 ,  H01M10/0562 ,  H01M50/403 ,  H01M50/46 ,  H01M50/491

Abstract: Embodiments described herein relate to electrochemical cells with multiple separators, and methods of producing the same. A method of producing an electrochemical cell can include disposing an anode material onto an anode current collector, disposing a first separator on the anode material, disposing a cathode material onto a cathode current collector, disposing a second separator onto the cathode material, and disposing the first separator on the second separator to form the electrochemical cell. The anode material and/or the cathode material can be a semi-solid electrode material including an active material, a conductive material, and a volume of liquid electrolyte. In some embodiments, less than about 10% by volume of the liquid electrolyte evaporates during the forming of the electrochemical cell. In some embodiments, the method can further include wetting the first separator and/or the second separator with an electrolyte solution prior to coupling the first separator to the second separator.

公开(公告)号：US20240047810A1

公开(公告)日：2024-02-08

申请号：US18228923

申请日：2023-08-01

Applicant: 24M Technologies, Inc.

Inventor： Chad Alan HARTZOG ,  Junzheng CHEN

IPC: H01M50/251 ,  H01M50/569 ,  H02S40/38 ,  H02S40/36 ,  H01M4/06

CPC classification number: H01M50/251 ,  H01M50/569 ,  H02S40/38 ,  H02S40/36 ,  H01M4/06 ,  H01M2220/10

Abstract: In some aspects a method of monitoring an electrochemical cell stack can include measuring an anode voltage difference between a first anode tab from a plurality of anode tabs and a second anode tab from the plurality of anode tabs, measuring a cathode voltage difference between a first cathode tab from a plurality of cathode tabs and a second cathode tab from the plurality of cathode tabs, and calculating a difference between the cathode voltage and the anode voltage. In some embodiments, the first cathode tab and the first anode tab can be located at a proximal end of the electrochemical cell. In some embodiments, a distance between the first anode tab and the second anode tab is within about 5% of the distance between the first cathode tab and the second cathode tab.

公开(公告)号：US20240047689A1

公开(公告)日：2024-02-08

申请号：US18228922

申请日：2023-08-01

Applicant: 24M Technologies, Inc.

Inventor： Chad Alan HARTZOG ,  Mark YOUNG ,  Kelly LEDBETTER ,  Junzheng CHEN ,  Frank Yongzhen FAN ,  Xiaoming LIU

IPC: H01M4/62

CPC classification number: H01M4/626 ,  H01M4/625

Abstract: The embodiments described herein involve electrochemical cells that have a heating element integrated into the electrochemical cell. In some aspects, an electrochemical cell comprises an anode current collector, an anode material disposed on the anode current collector, a cathode current collector, a cathode material disposed on a first side of the cathode current collector, a separator disposed between the anode material and the cathode material, and a heating element disposed on a second side of the cathode current collector, the second side opposite the first side. The heating element may include an electrically conductive material and a conductive material and disposed in an insulative material.

公开(公告)号：US20230133464A1

公开(公告)日：2023-05-04

申请号：US17975115

申请日：2022-10-27

Applicant: 24M Technologies, Inc.

Inventor： Naoki OTA ,  Junzheng CHEN ,  Raymond ZAGARS ,  Jeffry DISKO ,  Ryan Michael LAWRENCE

IPC: H01M50/211 ,  H01M50/105 ,  H01M50/46 ,  H01M50/466 ,  H01M10/647 ,  H01M10/6551 ,  H01M10/48 ,  H01M50/30

Abstract: Embodiments described herein include electrochemical cell modules. In some aspects, an electrochemical cell module includes a first electrochemical cell and a second electrochemical cell. The first electrochemical cell includes an anode material disposed on an anode current collector, a cathode material disposed on a cathode current collector, a separator disposed between the anode material and the cathode material, and a pouch material disposed on the anode current collector and the cathode current collector. The separator extends beyond the anode material and the cathode material and the pouch material extends beyond the separator. The portion of the separator that extends beyond the outer edge of the anode material and the cathode material and the portion of the pouch material that extends beyond the outer edge of the separator are folded at an angle of about 80 degrees to about 110 degrees with respect to the anode material and the cathode material.

公开(公告)号：US20230022329A1

公开(公告)日：2023-01-26

申请号：US17869310

申请日：2022-07-20

Applicant: 24M Technologies, Inc.

Inventor： Junzheng CHEN ,  Naoki OTA ,  Matthew R. TYLER ,  Landon OAKES

IPC: H01M50/581 ,  H01M4/62

Abstract: Embodiments described herein relate to electrodes and electrochemical cells with positive temperature coefficient coatings and methods of producing the same. In some embodiments, an electrode can include a layer of a film material, a positive temperature coefficient (PTC) coating disposed in the layer of film material. The PTC material resists a flow of current through at least a portion of the PTC material when a temperature of the at least a portion of the PTC material exceeds a threshold value. The electrode further includes an electrode material disposed on the PTC material. In some embodiments, the electrode can further include an electrode tab coupled to the PTC material and the electrode film. In some embodiments, the PTC material can include a conductive polymer. In some embodiments, the electrode material can include a semi-solid and/or a binderless electrode material.

公开(公告)号：US20220352597A1

公开(公告)日：2022-11-03

申请号：US17733658

申请日：2022-04-29

Applicant: 24M Technologies, Inc.

Inventor： Junzheng CHEN ,  Naoki OTA ,  Jeffry DISKO ,  Anthony D'ANGELO

IPC: H01M50/414 ,  H01M10/0562 ,  H01M4/131 ,  H01M4/136 ,  H01M50/46 ,  H01M50/491 ,  H01M50/403 ,  H01M4/1391 ,  H01M4/1397

Abstract: Embodiments described herein relate to electrochemical cells with multiple separators, and methods of producing the same. A method of producing an electrochemical cell can include disposing an anode material onto an anode current collector, disposing a first separator on the anode material, disposing a cathode material onto a cathode current collector, disposing a second separator onto the cathode material, and disposing the first separator on the second separator to form the electrochemical cell. The anode material and/or the cathode material can be a semi-solid electrode material including an active material, a conductive material, and a volume of liquid electrolyte. In some embodiments, less than about 10% by volume of the liquid electrolyte evaporates during the forming of the electrochemical cell. In some embodiments, the method can further include wetting the first separator and/or the second separator with an electrolyte solution prior to coupling the first separator to the second separator.

公开(公告)号：US20210226192A1

公开(公告)日：2021-07-22

申请号：US17152950

申请日：2021-01-20

Applicant: 24M Technologies, Inc. ,  Kyocera Corporation

Inventor： Junji ARANAMI ,  Raymond ZAGARS ,  Naoki OTA ,  Junzheng CHEN ,  Ricardo BAZZARELLA

IPC: H01M4/04

Abstract: Embodiments described herein relate generally to apparatuses and processes for forming semi-solid electrodes having high active solids loading by removing excess electrolyte. In some embodiments, the semi-solid electrode material can be formed by mixing an active material and, optionally, a conductive material in a liquid electrolyte to form a suspension. In some embodiments, the semi-solid electrode material can be disposed onto a current collector to form an intermediate electrode. In some embodiments, the semi-solid electrode material can have a first composition in which the ratio of electrolyte to active material is between about 10:1 and about 1:1. In some embodiments, a method for converting the semi-solid electrode material from the first composition into the second composition includes removing a portion of the electrolyte from the semi-solid electrode material. In some embodiments, the method includes mechanically compressing the intermediate electrode to remove the portion of electrolyte from the semi-solid electrode material.