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US 12,646,739 B2Granted
Reactive sintering of ceramic lithium-ion solid electrolytes
AssigneeCorning Incorporated
InventorsBruce Gardiner Aitken, Michael Edward Badding, George Halsey Beall, Curtis Robert Fekety, Lanrik Wayne Kester, Robert Michael Morena, Zhen Song
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Abstract
Solid lithium-ion ceramic electrolyte membranes have an average thickness of less than 200 micrometers. A constituent electrolyte material has an average grain size of less than 10 micrometers. The solid lithium-ion ceramic electrolyte is free-standing. Alternatively, solid lithium-ion electrolyte membranes have a composition represented by Li1+x−yMxM′2−x−yM″y(PO4)3, where M is a 3+ ion, M′ is a 4+ ion, M″ is a 5+ ion, 0≤x≤2 and 0≤y≤2.
Claims20
A solid electrolyte, comprising:
- a lithium-containing ceramic membrane configured to conduct lithium-ions, wherein the ceramic is sintered;
- a first surface and a second surface, wherein the second surface faces away from the first surface, wherein the membrane comprises a thickness defined as an average distance between the first surface and second surface, wherein the thickness of the membrane is at least 30 μm and less than 200 μm, and
- an average grain size of less than 10 μm of the sintered ceramic,
- wherein a conductivity of the membrane is greater than 10−6 S/cm.
1 more element
A solid electrolyte, comprising:
- a lithium-containing ceramic membrane configured to conduct lithium-ions, wherein the ceramic is sintered, and the lithium-containing ceramic membrane comprises a sintered polycrystalline ceramic comprising grains of material sintered to one another;
- a first major surface and a second major surface, wherein the second major surface faces away from the first majored surface, and the membrane comprises a thickness defined as an average distance between the first major surface and the second major surface, wherein the thickness of the membrane of less than 200 μm, and
- an average grain size of less than 10 μm of the sintered ceramic,
- wherein the membrane is unsupported by a substrate and is free-standing.
1 more element
Dependencies are inferred from the claim text.