Battery Material Patent Application Filed

ChangeBridge: Patent Apps - Batteries (H01M)

Published March 26th, 2026

Detected March 27th, 2026

Summary

The USPTO has published a new patent application, US20260088284A1, concerning a secondary battery positive electrode material. The application details a material designed to improve compaction density and reduce impedance during charge and discharge cycles.

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What changed

The United States Patent and Trademark Office (USPTO) has published patent application US20260088284A1, filed on November 30, 2025, with a publication date of March 26, 2026. The application describes a novel secondary battery positive electrode material that utilizes a gradation design of large and small particles, with specific carbon coating strategies applied to each size to enhance compaction density, electron transport, and reduce impedance.

This publication represents a new patent filing and does not impose immediate compliance obligations on manufacturers. However, companies involved in battery material research and development should review the patent's claims and abstract to understand the technological landscape and potential intellectual property considerations in the energy storage sector. No specific compliance deadlines or penalties are associated with this patent application publication.

Source document (simplified)

← USPTO Patent Applications

SECONDARY BATTERY POSITIVE ELECTRODE MATERIAL, SECONDARY BATTERY POSITIVE ELECTRODE AND SECONDARY BATTERY

Application US20260088284A1 Kind: A1 Mar 26, 2026

Inventors

Hui CAO, Yi YAO, Min HOU, Chan LIU, Tong WANG, Caihong SHI, Yingying GUO, Yaqing YANG

Abstract

A secondary battery positive electrode material, relating to the field of battery materials. The secondary battery positive electrode material comprises large particles with particle size of ≥2 μm and small particles with particle size of ≤1 μm. The surfaces of some of the small particles are provided with a carbon coating layer; and the surfaces of some of the large particles are not provided with a carbon coating layer. According to the positive electrode material, by means of gradation design of the large and small particles, the compaction density is improved. Moreover, the surfaces of the small particles are coated with a carbon layer to provide sufficient electron transport paths. Additionally, the surfaces of the large particles are not hindered by a carbon coating layer, so that the impedance in a charge and discharge process can be reduced.