Quantumscape Battery, Inc.

Quantumscape Corporation

Gengfu Xu

Niall Donnelly

Tim Holme

Sriram Rangarajan Iyer

Lei Cheng

Cheng-Chieh Chao

Oleh Karpenko

Yang Li

Will Hudson

William H Gardner

Larry Beck

Zhebo Chen

Kian Kerman

Jagdeep Singh

Tommy Huang

Harsh Maheshwari

Set forth herein are processes and materials for making ceramic thin films by casting ceramic source powders and precursor reactants, binders, and functional additives into unsintered thin films and subsequently sintering the thin films under controlled atmospheres and on specific substrates.

Processes and materials for casting and sintering green garnet thin films

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

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 are defect-free solid-state separators which are useful as Liion-conducting electrolytes in electrochemical 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.

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Santa Clara, CA, United States of America

Gengfu Xu