All-Solid-State Battery Active Material and Preparation Methods Disclosed

ChangeBridge: Patent Apps - Batteries (H01M)

Published March 26th, 2026

Detected March 27th, 2026

Summary

The USPTO has published a patent application detailing a new positive electrode active material for all-solid-state rechargeable batteries. The disclosure includes specific compositions and preparation methods for these advanced battery materials.

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What changed

This document is a published patent application from the USPTO, specifically application US20260088283A1, filed on September 23, 2025, and published on March 26, 2026. It describes a novel positive electrode active material for all-solid-state rechargeable batteries. The material comprises specific lithium nickel-based composite oxide particles with boron and zirconium coating layers, along with a second positive electrode active material also coated with zirconium.

While this is a patent application and not a regulation, it signals potential future technological advancements in battery manufacturing. Companies involved in battery research, development, and manufacturing, particularly those focused on electric vehicles or energy storage solutions, should be aware of this disclosure. No immediate compliance actions are required, but it may influence future product development and intellectual property strategies in the energy sector.

Source document (simplified)

← USPTO Patent Applications

POSITIVE ELECTRODE ACTIVE MATERIALS FOR ALL-SOLID-STATE RECHARGEABLE BATTERIES, PREPARATION METHODS OF POSITIVE ELECTRODE ACTIVE MATERIALS, AND ALL-SOLID-STATE RECHARGEABLE BATTERIES

Application US20260088283A1 Kind: A1 Mar 26, 2026

Inventors

Do-Yu KIM, Jayhyok SONG, Pilsang YUN, Hwichul YANG, Tae Ho CHO

Abstract

Disclosed are a positive electrode active material for an all-solid-state rechargeable battery, a method of preparing the positive electrode active material, and an all-solid-state rechargeable battery. The positive electrode active material includes a first positive electrode active material including a first lithium nickel-based composite oxide particle in a form of secondary particles formed by agglomeration of primary particles. A first coating layer is disposed on surfaces of the first lithium nickel-based composite oxide particles and includes boron. A second coating layer is disposed on the first coating layer and includes zirconium. The positive electrode active material also comprises a second positive electrode active material comprising a second lithium nickel-based composite oxide particle in a form of single particles. A third coating layer is disposed on surfaces of the second lithium nickel-based composite oxide particles and includes zirconium.

CPC Classifications

H01M 4/366 H01M 4/0471 H01M 4/364 H01M 4/525 H01M 2004/021 H01M 10/0525 H01M 10/0562 H01M 2300/0068

Filing Date

2025-09-23

Application No.

19336734

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Named provisions

POSITIVE ELECTRODE ACTIVE MATERIALS FOR ALL-SOLID-STATE RECHARGEABLE BATTERIES, PREPARATION METHODS OF POSITIVE ELECTRODE ACTIVE MATERIALS, AND ALL-SOLID-STATE RECHARGEABLE BATTERIES