Quantumscape Battery, Inc.

The Penn State Research Foundation

Quantumscape Corporation

Recapping, Inc.

Aram Yang

Tiffany Ho

Timothy P Holme

Rainer Johannes Fasching

Zhebo Chen

Mohit Singh

Lei Cheng

Cheng-Chieh Chao

Will Hudson

Amal Mehrotra

Tommy Huang

Christopher Dekmezian

Greg Roberts

Tim Holme

Ghyrn E Loveness

Clive A Randall

Leslie E Cross

Arnold Allenic

Larry Beck

Amanda Lou Baker

Ramakrishnan Rajagopalan

Niall J Donnelly

Jan Chan

Thomas Arnold

Set forth herein are processes for making and using electrolytes (also known as catholytes when the electrolytes are mixed with cathode active materials) for a positive electrode of an electrochemical cell. The catholytes include additives that prevent surface fluorination of lithium-stuffed garnet solid-state separators in contact with the positive electrode. Also set forth herein are electrochemical devices which include the catholytes in addition to a lithium-stuffed garnet solid-state electrolyte separator.

Electrochemical cells with catholyte additives and lithium-stuffed garnet separators

Provided herein are electrochemical cells having a solid separator, a lithium metal anode, and a positive electrode catholyte wherein the electrochemical cell includes a nitrile, dinitrile, or organic sulfur-including solvent and a lithium salt dissolved therein. Also set forth are methods of making and using these electrochemical cells.

Catholytes for solid state rechargeable batteries, battery architectures suitable for use with these catholytes, and methods of making and using the same

Provided herein are compositions which are useful as electrolytes and/or catholytes in an electrochemical cell that includes a solid-state separator and a lithium-metal anode.

Catholytes for a solid-state battery

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

Battery systems using doped conversion materials as the active material in battery cathodes are provided herein. Doped conversion material may include a defect-rich structure or an amorphous or glassy structure, including at least one or more of a metal material, one or more oxidizing species, a reducing cation species, and a dopant. Methods for fabricating batteries and battery systems with doped conversion material are also provided herein.

Doped conversion materials for secondary battery cathodes

Dielectric compositions that include compound of the formula [(M')(A&#x2032;)][(M&#x2033;),(B&#x2033;)(C&#x2033;)]O(V)and protonated dielectric compositions that include a protonated dielectric compound within the formula [(M&#x2032;)(A&#x2032;)](M&#x2033;)(B&#x2033;)(C&#x2033;)]O(V)(H)are disclosed. Composite materials that employ one or more of these dielectric compounds together with an electrolyte also are disclosed. Composite material that employs one or more of these dielectric compounds together with an electrochemally active material also are disclosed.

High energy density ionic dielectric materials and devices

Growing community of inventors

Berkeley, CA, United States of America

Aram Yang