Quantumscape Battery, Inc.

Quantumscape Corporation

Marie A Mayer

Zhebo Chen

Tim Holme

Gilbert N Riley, Jr

Cheng-Chieh Chao

Rainer Johannes Fasching

Timothy P Holme

Ghyrn E Loveness

Eric Tulsky

Shuang Li

Cheng Chieh Chao

Christopher Dekmezian

Nick Perkins

Joseph Han

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 present invention is directed to battery system and operation thereof. In an embodiment, lithium material is plated onto the anode region of a lithium secondary battery cell by a pulsed current. The pulse current may have both positive and negative polarity. One of the polarities causes lithium material to plate onto the anode region, and the opposite polarity causes lithium dendrites to be removed. There are other embodiments as well.

Pulse plating of lithium material in electrochemical devices

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 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.

Pulse plating of lithium matertal in electrochemical devices

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 contracts 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 and spatially disposed within spatial regions not occupied by the first active regions. In an example, the catholyte material comprises a lithium, germanium, phosphorous, and sulfur ('LGPS') containing material configured in a polycrystalline state. The device has an oxygen species configured within the LGPS containing material, the oxygen species having a ratio to the sulfur species of 1:2 and less to form a LGPSO material. 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 battery using LiMPS(M=Si, Ge, and/or Sn)

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 contracts 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 and spatially disposed within spatial regions not occupied by the first active regions. In an example, the catholyte material comprises a lithium, germanium, phosphorous, and sulfur ('LGPS') containing material configured in a polycrystalline state. The device has an oxygen species configured within the LGPS containing material, the oxygen species having a ratio to the sulfur species of 1:2 and less to form a LGPSO material. 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.

Provided are negative electrode assemblies containing lithium sulfide anolyte layers, electrochemical cells including these assemblies, and methods of forming thereof. An anolyte layer may be disposed over a metal layer of a current collector and may be used to separate the current collector from the rest of the electrolyte. The metal layer may include copper or any other suitable metal that forms in situ a metal sulfide during fabrication of the electrode assembly. Specifically, a sulfur containing layer, such as a solid electrolyte, is formed on the metal layer. Sulfur from this layer reacts with the metal of the current collector and forms a metal sulfide layer. When lithium is later added to the metal sulfide layer, a lithium sulfide anolyte layer is formed while the metal layer is recovered. Most, if not all operations may, be performed in situ during fabrication of electrochemical cells.

Metal sulfide anolytes for electrochemical cells

Solid state catholytes and electrolytes for energy storage devices

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 contracts 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 and 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.

Growing community of inventors

San Jose, CA, United States of America

Marie A Mayer