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US 11,649,190 B2Granted
Ceramics, methods for the production thereof and uses of same
AssigneeHydro-Quebec
InventorsAndrea Paolella, Sylvio Savoie, Vincent Gariepy, Wen Zhu, Abdelbast Guerfi, Karim Zaghib
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Abstract
This document describes processes for preparing ceramics, especially lithium-based ceramics. The ceramics produced by this process and their use in electrochemical applications are also described as well as electrode materials, electrodes, electrolyte compositions, and electrochemical cells comprising them.
Claims26
Process for preparing a lithium-based ceramic, the process comprising at least the steps of:
- a) mixing a source of lithium ion, at least one metal oxide or phosphate and a carbon material to obtain a mixture of powders;
- and
- b) heating the mixture of powders obtained in step (a) at a treatment temperature;
- wherein the source of lithium ion used in step (a) has a melting point below the treatment temperature of step (b);
- and wherein:
- step (b) is carried out under inert atmosphere and the process further comprises a step (c) of heating the product of step (b) in the presence of oxygen for a period of time sufficient to eliminate the carbon material;
- or
- step (b) is carried out in the presence of oxygen and for a period of time sufficient to eliminate the carbon material.
5 more elements
Dependencies are inferred from the claim text.