Doped lithiated solid-state electrolyte materials

EP4762010A1Pending Publication Date: 2026-06-24WILLIAM BLYTHE & CO LTD

Patent Information

Authority / Receiving Office: EP · EP
Patent Type: Applications
Current Assignee / Owner: WILLIAM BLYTHE & CO LTD
Filing Date: 2024-08-15
Publication Date: 2026-06-24

AI Technical Summary

Technical Problem

Current methods for producing doped lithiated solid-state electrolyte materials, such as doped lithium lanthanum zirconium oxides, are energy-intensive and not scalable, requiring extensive high-temperature heating and involving processes like ball milling and solvent removal.

Method used

A method involving benign aqueous precipitation chemistry, where a lithium species is contacted with a solid comprising lanthanum, zirconium, and dopant species, forming a precipitate that is then calcined to produce the doped lithiated solid-state electrolyte material, potentially at lower temperatures.

Benefits of technology

This method reduces energy consumption, is more scalable, and generates minimal harmful waste, while effectively producing doped lithiated solid-state electrolyte materials with improved properties.

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Abstract

Provided herein is a method of making a doped lithium lanthanum zirconium oxide. The method comprises contacting an aqueous solution comprising lithium ions with a solid comprising lanthanum, zirconium and one or more dopant species for incorporation into the doped lithium lanthanum zirconium oxide; forming a precipitate comprising lithium; and calcining the precipitate comprising lithium to form the doped lithium lanthanum zirconium oxide. Also provided are related methods, products, starting materials and intermediates.

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