公开(公告)号：US20230050593A1

公开(公告)日：2023-02-16

申请号：US17961195

申请日：2022-10-06

申请人： QuantumScape Battery, Inc.

发明人： Larry Beck ,  Cheng-Chieh CHAO ,  Lei CHENG ,  Niall DONNELLY ,  William H. GARDNER ,  Tim HOLME ,  Will HUDSON ,  Sriram IYER ,  Oleh KARPENKO ,  Yang LI ,  Gengfu XU

IPC分类号： H01M10/0562 ,  C01G25/00 ,  H01M10/0525

摘要： The instant disclosure sets forth multiphase lithium-stuffed garnet electrolytes having secondary phase inclusions, wherein these secondary phase inclusions are material(s) which is/are not a cubic phase lithium-stuffed garnet but which is/are entrapped or enclosed within a lithium-stuffed garnet. When the secondary phase inclusions described herein are included in a lithium-stuffed garnet at 30-0.1 volume %, the inclusions stabilize the multiphase matrix and allow for improved sintering of the lithium-stuffed garnet. The electrolytes described herein, which include lithium-stuffed garnet with secondary phase inclusions, have an improved sinterability and density compared to phase pure cubic lithium-stuffed garnet having the formula Li7La3Zr2O12.

公开(公告)号：US20220328867A1

公开(公告)日：2022-10-13

申请号：US17709393

申请日：2022-03-30

申请人： QuantumScape Battery, Inc.

发明人： Larry BECK ,  Cheng-Chieh CHAO ,  Lei CHENG ,  Niall DONNELLY ,  William H. GARDNER ,  Tim HOLME ,  Will HUDSON ,  Sriram IYER ,  Oleh KARPENKO ,  Yang LI ,  Gengfu XU

IPC分类号： H01M10/0562 ,  C01G25/00 ,  H01M10/0525

摘要： The instant disclosure sets forth multiphase lithium-stuffed garnet electrolytes having secondary phase inclusions, where-in these secondary phase inclusions are material(s) which is/are not a cubic phase lithium-stuffed garnet but which is/are entrapped or enclosed within a lithium-stuffed garnet. When the secondary phase inclusions described herein are included in a lithium-stuffed garnet at 30-0.1 volume %, the inclusions stabilize the multiphase matrix and allow for improved sintering of the lithium-stuffed garnet. The electrolytes described herein, which include lithium-stuffed garnet with secondary phase inclusions, have an improved sinterability and density compared to phase pure cubic lithium-stuffed garnet having the formula Li7La3Zr2O12.

公开(公告)号：US20220190382A1

公开(公告)日：2022-06-16

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 ,  C04B35/488 ,  C04B35/622 ,  H01M50/403 ,  H01M50/409 ,  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：US20230231187A1

公开(公告)日：2023-07-20

申请号：US18153305

申请日：2023-01-11

申请人： QUANTUMSCAPE BATTERY, INC.

发明人： Arnold ALLENIC ,  Cheng-Chieh CHAO ,  Lei CHENG ,  Niall DONNELLY ,  William H. GARDNER ,  Timothy HOLME ,  Sriram IYER ,  Shuang LI

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

CPC分类号： H01M10/0562 ,  H01M10/052 ,  H01M10/056 ,  H01M10/058 ,  C04B35/4885 ,  C04B35/62218 ,  H01M50/403 ,  H01M50/409 ,  H01M10/0565 ,  C04B2235/3203 ,  C04B2235/3227 ,  C04B2235/6025 ,  C04B2235/6567 ,  C04B2235/764

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.