Lithium Battery Active Material Patent Application

ChangeBridge: Patent Apps - Batteries (H01M)

Published December 4th, 2025

Detected March 27th, 2026

Summary

The USPTO has published a new patent application (US20260088290A1) detailing a positive active material for lithium secondary batteries. The application describes a nickel-based lithium metal oxide secondary particle with specific structural characteristics intended to improve battery performance.

View original document View source feed page

What changed

The United States Patent and Trademark Office (USPTO) has published a new patent application, US20260088290A1, filed on December 4, 2025. The application, titled "POSITIVE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, METHOD OF PREPARING POSITIVE ACTIVE MATERIAL, POSITIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY INCLUDING POSITIVE ACTIVE MATERIAL, AND LITHIUM SECONDARY BATTERY INCLUDING POSITIVE ELECTRODE INCLUDING POSITIVE ACTIVE MATERIAL," describes a novel nickel-based lithium metal oxide secondary particle. This material is characterized by a hollow structure with pores, composed of primary particles ranging from 2 to 6 micrometers, and the secondary particle itself measures between 10 to 18 micrometers.

This publication represents a new patent application and does not impose immediate compliance obligations on manufacturers. However, companies involved in the research, development, or manufacturing of lithium-ion battery components, particularly cathode materials, should be aware of this filing. It may influence future product development, licensing strategies, and competitive landscapes within the battery technology sector. The application is scheduled for publication on March 26, 2026, with a filing date of December 4, 2025.

Source document (simplified)

← USPTO Patent Applications

POSITIVE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, METHOD OF PREPARING POSITIVE ACTIVE MATERIAL, POSITIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY INCLUDING POSITIVE ACTIVE MATERIAL, AND LITHIUM SECONDARY BATTERY INCLUDING POSITIVE ELECTRODE INCLUDING POSITIVE ACTIVE MATERIAL

Application US20260088290A1 Kind: A1 Mar 26, 2026

Inventors

Byungwuk Kang, Wooyoung Yang, Ickkyu Choi

Abstract

Provided are a positive active material for a lithium secondary battery, a method of preparing the positive active material, a positive electrode for a lithium secondary battery including the positive active material, and a lithium secondary battery including a positive electrode including the positive active material, in which the positive active material may include a nickel-based lithium metal oxide secondary particle including a plurality of large primary particles, the nickel-based lithium metal oxide secondary particle may have a hollow structure having a pore inside, a size of each of the large primary particles may be in a range of about 2 micrometers (μm) to about 6 μm, and a size of the nickel-based lithium metal oxide secondary particle may be in a range of about 10 μm to about 18 μm.

CPC Classifications

H01M 4/525 C01G 51/42 C01G 51/82 C01G 53/42 C01G 53/50 C01G 53/82 H01M 4/131 H01M 4/366 H01M 10/052 C01P 2002/74 C01P 2004/34 C01P 2004/50 C01P 2004/61