公开(公告)号：US10804564B2

公开(公告)日：2020-10-13

申请号：US16422619

申请日：2019-05-24

申请人： QuantumScape Corporation

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 ,  H01M2/14 ,  H01M10/052 ,  H01M10/056 ,  H01M10/058 ,  C04B35/488 ,  C04B35/622 ,  H01M10/0565

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.

公开(公告)号：US10361455B2

公开(公告)日：2019-07-23

申请号：US15908732

申请日：2018-02-28

申请人： QuantumScape Corporation

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

IPC分类号： H01M2/14 ,  H01M10/0565 ,  H01M10/0562 ,  H01M10/052 ,  H01M10/056 ,  H01M10/058 ,  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.

公开(公告)号：US11011796B2

公开(公告)日：2021-05-18

申请号：US16343365

申请日：2017-10-20

申请人： QUANTUMSCAPE CORPORATION

发明人： Zhebo Chen ,  Tim Holme ,  Marie Mayer ,  Nick Perkins ,  Eric Tulsky ,  Cheng-Chieh Chao ,  Christopher Dekmezian ,  Shuang Li

IPC分类号： H01M50/431 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/0562

摘要： Set forth herein are compositions comprising A.(LiBH4).B.(LiX).C.(LiNH2), wherein X is fluorine, bromine, chloride, iodine, or a combination thereof, and wherein 0.1≤A≤3, 0.1≤B≤4, and 0≤C≤9 that are suitable for use as solid electrolyte separators in lithium electrochemical devices. Also set forth herein are methods of making A.(LiBH4).B.(LiX).C.(LiNH2) compositions. Also disclosed herein are electrochemical devices which incorporate A.(LiBH4).B.(LiX).C.(LiNH2) compositions and other materials.

公开(公告)号：US09966630B2

公开(公告)日：2018-05-08

申请号：US15007908

申请日：2016-01-27

申请人： QuantumScape Corporation

发明人： Lei Cheng ,  Sriram Iyer ,  Will Gardner ,  Tim Holme ,  Shuang Li ,  Cheng-chieh Chao ,  Niall Donnelly ,  Arnold Allenic

IPC分类号： H01M2/14 ,  H01M10/0562 ,  H01M10/0565

CPC分类号： H01M10/0562 ,  H01M2/145 ,  H01M10/052 ,  H01M10/056 ,  H01M10/0565 ,  H01M10/058

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.