Electrolyte for a solid-state battery

Patent metadata

Field	Value
Publication number	US-10581115-B2
Application number	US-201916295673-A
Country	US
Kind code	B2
Filing date	Mar 7, 2019
Priority date	Dec 21, 2016
Publication date	Mar 3, 2020
Grant date	Mar 3, 2020

Abstract

Electrolyte for a solid-state battery includes a body having grains of inorganic material sintered to one another, where the grains include lithium. The body is thin, has little porosity by volume, and has high ionic conductivity.

First claim

What is claimed is:

1. Electrolyte for a solid-state battery, comprising:
a body comprising ceramic grains sintered to one another, wherein the grains comprise lithium,
wherein thickness of the body, between first and second major surfaces thereof, is in a range from 3 μm to 1 mm;
wherein the first and second major surfaces of the body have an unpolished granular profile such that the profile includes grains protruding outward from the respective major surface with a height of at least 25 nm and no more than 150 μm relative to recessed portions of the respective major surface at boundaries between the respective grains;
wherein the body has ionic conductivity greater than 5×10 −5 S/cm.

2. The electrolyte of claim 1 , wherein fewer than 10 pin holes of a cross-sectional area of at least a square micrometer pass through the body, per square millimeter of surface on average.

3. The electrolyte of claim 1 , wherein the granular profile includes grains with a height of at least 150 nanometers relative to recessed portions of the respective major surface at boundaries between the respective grains.

4. The electrolyte of claim 3 , wherein the height of the grains is no more than 80 micrometers relative to recessed portions of the respective major surface at boundaries between the respective grains.

5. The electrolyte of claim 1 , wherein the body has a length of 5 m or greater.

6. The electrolyte of claim 1 , wherein the grains sintered to one another have an average grain size of 5 μm or less.

Assignees

• Corning Inc

Inventors

• Badding Michael Edward
• Brown Jacqueline Leslie
• Heine Jennifer Anella
• Ketcham Thomas Dale
• Merz Gary Edward
• Miller Eric Lee
• Song Zhen
• Tanner Cameron Wayne
• Walsh Conor James

Classifications

• C09J7/21 Primary

  Paper; Textile fabrics · CPC title

• C09J1/00

  Adhesives based on inorganic constituents · CPC title

• C04B35/48

  based on zirconium or hafnium oxides, zirconates, {zircon} or hafnates · CPC title

• B28B1/30

  by applying the material on to a core or other moulding surface to form a layer thereon (to form a permanent layer B28B19/00) · CPC title

• C04B2235/661

  Multi-step sintering · CPC title