Quantumscape Battery, Inc.

Christopher Dekmezian

Cheng-Chieh Chao

Tim Holme

Shuang Li

Zhebo Chen

Eric Tulsky

Marie A Mayer

Nick Perkins

Lei Cheng

Amal Mehrotra

Aram Yang

Tommy Huang

Tiffany Ho

Timothy P Holme

Provided herein solid-state battery architectures that include an oxide electrolyte in contact with the anode of an electrochemical cell and a sulfide electrolyte in contact with the cathode of an electrochemical cell.

Solid-state battery

Set forth herein are compositions comprising A·(LiBH)·B·(LiX)·C·(LiNH), wherein X is fluorine, bromine, chloride, iodine, or a combination thereof, and wherein 0.1≤A≤3, 0.1≤13≤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·(LiBH)·B·(LiX)·C·(LiNH) compositions. Also disclosed herein are electrochemical devices which incorporate A·(LiBH)·B·(LiX)·C·(LiNH) compositions and other materials.

Electrolyte separators including lithium borohydride and composite electrolyte separators of lithium-stuffed garnet and lithium borohydride

Set forth herein are processes for making lithium-stuffed garnet oxides (e.g., LiLaZrO, also known as LLZO) that have passivated surfaces comprising a fluorinate and/or an oxyfluorinate species. These surfaces resist the formation of oxides, carbonates, hydroxides, peroxides, and organics that spontaneously form on LLZO surfaces under ambient conditions. Also set forth herein are new materials made by these processes.

Lithium-stuffed garnet thin films and pellets having an oxyfluorinated and/or fluorinated surface and methods of making and using the thin films and pellets

Set forth herein are compositions comprising A.(LiBH).B.(LiX).C.(LiNH), wherein X is fluorine, bromine, chloride, iodine, or a combination thereof, and wherein 0.1&#x2264;A&#x2264;3, 0.1&#x2264;B&#x2264;4, and 0&#x2264;C&#x2264;9 that are suitable for use as solid electrolyte separators in lithium electrochemical devices. Also set forth herein are methods of making A.(LiBH).B.(LiX).C.(LiNH) compositions. Also disclosed herein are electrochemical devices which incorporate A.(LiBH).B.(LiX).C.(LiNH) compositions and other materials.

Growing community of inventors

Campbell, CA, United States of America

Christopher Dekmezian