Solid state catholytes and electrolytes for energy storage devices
First Claim
Patent Images
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 solid state catholyte material spatially confined in spatial regions not occupied by the active material region, wherein the solid state catholyte material comprises;
a lithium element;
a silicon element;
a phosphorous element;
a sulfur element; and
an oxygen element,wherein the solid state catholyte material is polycrystalline and characterized by a primary CuKα
XRD peak at 2θ
=31°
±
1°
, 2θ
=33°
±
1°
, or 2θ
=43°
±
1°
, and wherein the oxygen element has a ratio to the sulfur element of 1;
2 or less.
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Abstract
The present invention provides an energy storage device comprising a cathode region having an active region which expands or contracts from a first volume to a second volume during a period of a charge and discharge. The device has a a solid state catholyte material which includes lithium, phosphorus, sulfur, and silicon elements. 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 oxygen doped configuration of LiaSiPbSc containing material.
20 Citations
24 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 solid state catholyte material spatially confined in spatial regions not occupied by the active material region, wherein the solid state catholyte material comprises; a lithium element; a silicon element; a phosphorous element; a sulfur element; and an oxygen element, wherein the solid state catholyte material is polycrystalline and characterized by a primary CuKα
XRD peak at 2θ
=31°
±
1°
, 2θ
=33°
±
1°
, or 2θ
=43°
±
1°
, and wherein the oxygen element has a ratio to the sulfur element of 1;
2 or less. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
-
Specification