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    Annealed garnet electrolyte separators
    1.
    发明授权
    Annealed garnet electrolyte separators 有权

    公开(公告)号：US11581576B2

    公开(公告)日：2023-02-14

    申请号：US17488187

    申请日：2021-09-28

    申请人： QUANTUMSCAPE BATTERY, INC.

    发明人： Arnold Allenic ,  Cheng-Chieh Chao ,  Lei Cheng ,  Niall Donnelly ,  William H. Gardner ,  Tim Holme ,  Sriram Iyer ,  Shuang Li

    IPC分类号： H01M10/0562 ,  H01M10/052 ,  H01M10/056 ,  H01M10/058 ,  H01M50/403 ,  H01M50/409 ,  H01M10/0565 ,  C04B35/488 ,  C04B35/622

    摘要： Set forth herein are pellets, thin films, and monoliths of lithium-stuffed garnet electrolytes having engineered surfaces. These engineered surfaces have a list of advantageous properties including, but not limited to, low surface area resistance, high Li+ ion conductivity, low tendency for lithium dendrites to form within or thereupon when the electrolytes are used in an electrochemical cell. Other advantages include voltage stability and long cycle life when used in electrochemical cells as a separator or a membrane between the positive and negative electrodes. Also set forth herein are methods of making these electrolytes including, but not limited to, methods of annealing these electrolytes under controlled atmosphere conditions. Set forth herein, additionally, are methods of using these electrolytes in electrochemical cells and devices. The instant disclosure further includes electrochemical cells which incorporate the lithium-stuffed garnet electrolytes set forth herein.

    Annealed garnet electrolycte separators
    3.
    发明授权
    Annealed garnet electrolycte separators 有权

    公开(公告)号：US11165096B2

    公开(公告)日：2021-11-02

    申请号：US17019134

    申请日：2020-09-11

    申请人： QuantumScape Battery, Inc.

    发明人： Arnold Allenic ,  Cheng-Chieh Chao ,  Lei Cheng ,  Niall Donnelly ,  William H. Gardner ,  Tim Holme ,  Sriram Iyer ,  Shuang Li

    IPC分类号： H01M10/0562 ,  H01M10/052 ,  H01M10/056 ,  H01M10/058 ,  H01M50/403 ,  H01M10/0565 ,  C04B35/488 ,  C04B35/622 ,  H01M50/409

    摘要： Set forth herein are pellets, thin films, and monoliths of lithium-stuffed garnet electrolytes having engineered surfaces. These engineered surfaces have a list of advantageous properties including, but not limited to, low surface area resistance, high Li+ ion conductivity, low tendency for lithium dendrites to form within or thereupon when the electrolytes are used in an electrochemical cell. Other advantages include voltage stability and long cycle life when used in electrochemical cells as a separator or a membrane between the positive and negative electrodes. Also set forth herein are methods of making these electrolytes including, but not limited to, methods of annealing these electrolytes under controlled atmosphere conditions. Set forth herein, additionally, are methods of using these electrolytes in electrochemical cells and devices. The instant disclosure further includes electrochemical cells which incorporate the lithium-stuffed garnet electrolytes set forth herein.

    CATHOLYTE MANAGEMENT FOR A SOLID-STATE SEPARATOR
    4.
    发明申请
    CATHOLYTE MANAGEMENT FOR A SOLID-STATE SEPARATOR 有权

    公开(公告)号：US20210273291A1

    公开(公告)日：2021-09-02

    申请号：US17204924

    申请日：2021-03-17

    申请人： QuantumScape Battery, Inc.

    发明人： William H. Gardner ,  Joseph Salvi

    IPC分类号： H01M50/411 ,  H01M4/38 ,  H01M4/64 ,  H01M10/0565

    摘要： Provided herein are electrochemical cells that include a seal impermeable to a liquid electrolyte and that is bonded to a solid-state Li ion-conducting electrolyte in a manner that effectively isolates and protects a Li metal negative electrode from exposure to either, or both, a liquid electrolyte or a gel electrolyte used as a catholyte in the positive electrode. Some of the electrochemical cells include a series of electrochemical stacks, which may be stacked in a variety of configurations including configurations that share a Li metal negative electrode.