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    Annealed garnet electrolycte separators
    12.
    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.

    Solid state catholyte or electrolyte for battery using LiaMPbSc (M=Si, Ge, and/or Sn)
    13.
    发明授权
    Solid state catholyte or electrolyte for battery using LiaMPbSc (M=Si, Ge, and/or Sn) 有权

    公开(公告)号：US11139479B2

    公开(公告)日：2021-10-05

    申请号：US16672333

    申请日：2019-11-01

    申请人： QuantumScape Battery, Inc.

    发明人： Cheng-Chieh Chao ,  Zhebo Chen ,  Tim Holme ,  Marie A. Mayer ,  Gilbert N. Riley, Jr.

    IPC分类号： H01M4/62 ,  H01M4/131 ,  H01M10/0525 ,  H01M4/36 ,  H01M10/056 ,  H01M50/46 ,  H01M10/0562 ,  H01M4/136 ,  H01M4/505 ,  H01M4/525 ,  H01M4/58 ,  C01B33/00

    摘要： The present invention provides an energy storage device comprising a cathode region or other element. The device has a major active region comprising a plurality of first active regions spatially disposed within the cathode region. The major active region expands or contracts from a first volume to a second volume during a period of a charge and discharge. The device has a catholyte material spatially confined within a spatial region of the cathode region and spatially disposed within spatial regions not occupied by the first active regions. In an example, the catholyte material comprises a lithium, germanium, phosphorous, and sulfur (“LGPS”) containing material configured in a polycrystalline state. The device has an oxygen species configured within the LGPS containing material, the oxygen species having a ratio to the sulfur species of 1:2 and less to form a LGPSO material. The device has a protective material formed overlying exposed regions of the cathode material to substantially maintain the sulfur species within the catholyte material. Also included is a novel dopant configuration of the LiaMPbSc (LMPS) [M=Si,Ge, and/or Sn] containing material.