Method for preparing electrode active material by homogenization of precursor mixture and the product thereof

By mixing and heating lithium hydroxide with an active material precursor at a homogenization temperature before sintering, the method addresses the inefficiencies of existing particle size reduction processes, achieving cost-effective production of high-performance electrode active materials.

JP2026085893APending Publication Date: 2026-05-25TESLA INC
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Patent Information

Authority / Receiving Office
JP Β· JP
Patent Type
Applications
Current Assignee / Owner
TESLA INC
Filing Date
2025-11-11
Publication Date
2026-05-25

AI Technical Summary

Technical Problem

Current industrial methods for producing high-performance electrode active materials are time-consuming and costly due to the need for reducing and/or homogenizing the particle size of starting materials before sintering.

Method used

A method involving mixing lithium hydroxide and an active material precursor to form a precursor mixture, followed by heating at a homogenization temperature to form a homogenized mixture, and then sintering at a lower temperature to produce an electrode active material, with optional preheating and post-treatments.

Benefits of technology

This approach reduces manufacturing time and cost while maintaining or improving the performance of electrode active materials.

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Abstract

This invention provides a cost-effective and simple method for forming electrode active materials and the products thereof. [Solution] A method for forming an electrode active material is provided, comprising the steps of: mixing lithium hydroxide and an active material precursor to form a precursor mixture, wherein the lithium hydroxide contains a D50 particle size of at least 150 ΞΌm; heating the precursor mixture at a homogenization temperature to form a homogenization mixture; and sintering the homogenization mixture at a sintering temperature to form a final mixture containing an electrode active material, wherein the homogenization temperature is less than the sintering temperature.
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