Quantumscape Battery, Inc.

Quantumscape Corporation

Cheng-Chieh Chao

Tim Holme

Lei Cheng

Niall Donnelly

Zhebo Chen

Sriram Rangarajan Iyer

Shuang Li

Marie A Mayer

William H Gardner

Yang Li

Arnold Allenic

Gengfu Xu

Christopher Dekmezian

Tommy Huang

Gilbert N Riley, Jr

Kian Kerman

Oleh Karpenko

Will Hudson

Larry Beck

Harsh Maheshwari

Timothy P Holme

Eric Tulsky

Amal Mehrotra

Nick Perkins

Jagdeep Singh

Aram Yang

Wes Hermann

Tiffany Ho

David Cao

Will Gardner

William Hudson

Kim Van Berkel

Sunil Mair

Yuki Katoh

Seitaro Ito

Hyeseung Chung

Sarah Chavez

Yaosen Tian

Zhenfeng Yu

Akinari Ohash

Jessa Silver

Virgil Xu

Konstantin Lokshin

Drake Nguyen

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 contacts 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 an spatially disposed within spatial regions not occupied by the first active regions. 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 LiMPS(LMPS) [M=Si, Ge, and/or Sn] containing material.

Solid state catholyte or electrolyte for energy storage devices

The disclosure herein relates to rechargeable batteries and solid electrolytes therefore which include lithium-stuffed garnet oxides, for example, in a thin film, pellet, or monolith format wherein the density of defects at a surface or surfaces of the solid electrolyte is less than the density of defects in the bulk. In certain disclosed embodiments, the solid-state anolyte, electrolyte, and catholyte thin films, separators, and monoliths consist essentially of an oxide that conducts Liions. In some examples, the disclosure herein presents new and useful solid electrolytes for solid-state or partially solid-state batteries. In some examples, the disclosure presents new lithium-stuffed garnet solid electrolytes and rechargeable batteries which include these electrolytes as separators between a cathode and a lithium metal anode.

Lithium-stuffed garnet electrolytes with a reduced surface defect density and methods of making and using the same

Provided herein are detect-free solid-state separators which are useful as Liion-conducting electrolytes in electro-chemical cells and devices, such as, but not limited to, rechargeable batteries. In some examples, the separators have a Liion-conductivity greater than 1*10S/cm at room temperature.

Translucent and transparent separators

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 Liion 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 electrolyte separators

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 LiLaZrO.

Lithium-stuffed garnet electrolytes with secondary phase inclusions

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

The present disclosure concerns lithium zirconium phosphate (LZP) chemical oxides for coated cathode active materials, which are useful in cathodes (i.e., positive electrodes) of rechargeable lithium-batteries for reversibly storing lithium ions (Li).

Cathode materials having oxide surface species

The disclosure herein relates to rechargeable batteries and solid electrolytes therefore which include lithium-stuffed garnet oxides, for example, in a thin film, pellet, or monolith format wherein the density of defects at a surface or surfaces of the solid electrolyte is less than the density of defects in the bulk. In certain disclosed embodiments, the solid-state anolyte, electrolyte, and catholyte thin films, separators, and monoliths consist essentially of an oxide that conducts Li+ ions. In some examples, the disclosure herein presents new and useful solid electrolytes for solid-state or partially solid-state batteries. In some examples, the disclosure presents new lithium-stuffed garnet solid electrolytes and rechargeable batteries which include these electrolytes as separators between a cathode and a lithium metal anode.

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

San Jose, CA, United States of America

Cheng-Chieh Chao