Lithium Battery Positive Electrode Coating Material Patent

ChangeBridge: Patent Grants - Batteries (H01M)

Published March 31st, 2026

Detected March 31st, 2026

Summary

The USPTO granted Patent US12592389B2 to LG Energy Solution, Ltd. covering a positive electrode coating material for lithium secondary batteries that uses graphene oxide surface-modified with cationic functional groups to prevent lithium polysulfide leaching. The patent includes 14 claims and was filed on August 10, 2021, with Application No. 17781301.

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What changed

USPTO issued Patent US12592389B2 to LG Energy Solution, Ltd. for a graphene oxide-based coating material designed to prevent lithium polysulfide leaching in lithium secondary batteries, thereby improving battery performance. The patent covers the coating material composition, its preparation method, and the positive electrode and lithium battery comprising the coating. Inventors include Soohyun Kim, Jong-Chan Lee, Kihyun Kim, Kwonnam Sohn, and Daun Jeong.

This is a patent grant notice conferring intellectual property rights to the assignee; it does not impose regulatory obligations, compliance deadlines, or penalties on any party. Manufacturers and investors in battery technology may review the patent for competitive intelligence or licensing considerations.

Source document (simplified)

← USPTO Patent Grants

Positive electrode coating material for lithium secondary battery, preparation method thereof, and positive electrode and lithium secondary battery comprising the coating material

Grant US12592389B2 Kind: B2 Mar 31, 2026

Assignee

LG Energy Solution, Ltd.

Inventors

Soohyun Kim, Jong-Chan Lee, Kihyun Kim, Kwonnam Sohn, Daun Jeong

Abstract

Disclosed are a positive electrode coating material for a lithium secondary battery including graphene oxide surface-modified with cationic functional groups, a preparation method thereof, and a positive electrode and a lithium secondary battery comprising the coating material. The positive electrode coating material prevents the leaching of lithium polysulfide, thereby improving battery performance.