Solid state catholyte or electrolyte for battery using LiaMPbSc (M=Si, Ge, and/or Sn)
First Claim
1. An energy storage device comprising a cathode region, the cathode region comprising:
- an active material region comprising an active material that expands or contracts from a first volume to a second volume during a period of charge and discharge;
a catholyte material spatially confined in spatial regions not occupied by the active material region, wherein the catholyte material comprises;
a lithium element from greater than 30 to 50 atomic % of the catholyte material;
a silicon element from greater than 0 to 10 atomic % of the catholyte material;
a tin element from greater than 0 to 10 atomic % of the catholyte material;
a phosphorous element from greater than 5 to 15 atomic % of the catholyte material;
a sulfur element from greater than 30 to 55 atomic % of the catholyte material; and
an oxygen element from greater than 0 to 15 atomic % of the catholyte material,wherein the Si/(Si+Sn) stoichiometry is from 0.25 to 0.75; and
wherein the catholyte material is characterized by a primary CuKα
XRD peak at 2θ
=30°
±
1°
, 2θ
=33°
±
1°
, or 2θ
=43°
±
1°
, andwherein the oxygen element has a ratio to the sulfur element of 1;
2 or less; and
optionally, a protective material overlaying exposed regions of the active material to substantially maintain the sulfur element within the catholyte material.
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Accused Products
Abstract
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 LiaMPbSc (LMPS) [M=Si, Ge, and/or Sn] containing material.
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Citations
19 Claims
-
1. An energy storage device comprising a cathode region, the cathode region comprising:
-
an active material region comprising an active material that expands or contracts from a first volume to a second volume during a period of charge and discharge; a catholyte material spatially confined in spatial regions not occupied by the active material region, wherein the catholyte material comprises; a lithium element from greater than 30 to 50 atomic % of the catholyte material; a silicon element from greater than 0 to 10 atomic % of the catholyte material; a tin element from greater than 0 to 10 atomic % of the catholyte material; a phosphorous element from greater than 5 to 15 atomic % of the catholyte material; a sulfur element from greater than 30 to 55 atomic % of the catholyte material; and an oxygen element from greater than 0 to 15 atomic % of the catholyte material, wherein the Si/(Si+Sn) stoichiometry is from 0.25 to 0.75; and wherein the catholyte material is characterized by a primary CuKα
XRD peak at 2θ
=30°
±
1°
, 2θ
=33°
±
1°
, or 2θ
=43°
±
1°
, andwherein the oxygen element has a ratio to the sulfur element of 1;
2 or less; andoptionally, a protective material overlaying exposed regions of the active material to substantially maintain the sulfur element within the catholyte material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification