Doped lithium lanthanum zirconium oxide

EP4762009A1Pending Publication Date: 2026-06-24WILLIAM BLYTHE & CO LTD
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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

Existing methods for producing doped lithiated solid-state electrolyte materials, such as doped lithium lanthanum zirconium oxide (LLZO), are energy-intensive, generate harmful waste products, and often use unstable reagents. Additionally, these methods are not scalable for large-scale production.

Method used

A method of making doped lithium lanthanum zirconium oxide using polyoxometalates, which provides a stable and efficient route for producing doped LLZO without generating harmful waste products. This method involves forming the doped LLZO from a polyoxometalate, which acts as a suitable vehicle for supplying dopants, and can be conducted in an aqueous liquid.

Benefits of technology

The method effectively produces doped LLZO with improved efficiency, reducing energy consumption and waste generation. It uses stable precursors and avoids the formation of harmful by-products, making it scalable for large-scale production.

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Abstract

The invention provides a reaction composition for forming doped lithium lanthanum zirconium oxide, comprising one or more lithium, lanthanum and / or zirconium species for forming a doped lithium lanthanum zirconium oxide, and at least one dopant provided as a polyoxometalate. A method of making a doped lithium lanthanum zirconium oxide is also provided.
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