US 11,600,850 B2 · Lithium-stuffed garnet thin films and pellets having an oxyfluorinated and/or fluorinated surface and methods of making and using the thin films and pellets

Abstract

Set forth herein are processes for making lithium-stuffed garnet oxides (e.g., Li7La3Zr2O12, also known as LLZO) that have passivated surfaces comprising a fluorinate and/or an oxyfluorinate species. These surfaces resist the formation of oxides, carbonates, hydroxides, peroxides, and organics that spontaneously form on LLZO surfaces under ambient conditions. Also set forth herein are new materials made by these processes.

Claims21

Dependent claims

A process for making a sintered lithium-stuffed garnet thin film or pellet, comprising

(1) providing a solution comprising a fluoride salt and a solvent;
(2) providing a sintered lithium-stuffed garnet thin film or pellet;
(3) immersing at least one surface of the sintered lithium-stuffed garnet thin film or pellet in the solution at a temperature between, or equal to, 0° C. and 60° C.;
and
(4) removing the at least one surface of the sintered lithium-stuffed garnet thin film from the solution.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

16/756,386Filed 6 Nov 2018 · us provisional application

Priority

6 Nov 2017

Published

US 2021/0202983 A11 Jul 2021

Granted

7 Mar 2023

Term ends

Not estimatedThe source records don’t support an estimate.

Classification33 codes

C04B 35/4885
Composites: with aluminium oxide
H01M 10/0562
The electrolyte being constituted of inorganic materials only: solid materials
C01G 25/006
Compounds of zirconium: compounds containing zirconium, with or without oxygen or hydrogen, and containing two or more other elements
C04B 35/62218
Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products: obtaining ceramic films, e.g.…

Lithium-stuffed garnet thin films and pellets having an oxyfluorinated and/or fluorinated surface and methods of making and using the thin films and pellets

Life of this patent

Lithium-stuffed garnet thin films and pellets having an oxyfluorinated and/or fluorinated surface and methods of making and using the thin films and pellets

Life of this patent

Abstract

Claims21