USPTO Patent Grant: Graphene Oxide Battery Electrode Material

ChangeBridge: Patent Grants - Batteries (H01M)

Published March 24th, 2026

Detected March 26th, 2026

Summary

The USPTO has granted a patent (US12583751B2) to the Korea Institute of Energy Research for a reduced acylated graphene oxide material and its preparation method for use in lithium secondary battery electrodes. The patent aims to provide a stable, high-capacity negative electrode active material through a simple and low-cost process.

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What changed

The United States Patent and Trademark Office (USPTO) has granted patent US12583751B2 for a novel reduced acylated graphene oxide material and a method for its preparation. The patent, assigned to the Korea Institute of Energy Research, focuses on developing an electrode active material for lithium secondary batteries that offers stable activity, high capacity, low resistance, and improved rate-limiting characteristics.

This patent grant signifies the official recognition of an innovation in battery materials. While not a regulatory rule imposing obligations, it impacts companies involved in battery research, development, and manufacturing. Companies in this sector should be aware of this granted patent, as it may affect their intellectual property landscape and potential collaborations or licensing opportunities in the development of advanced battery technologies.

Source document (simplified)

← USPTO Patent Grants

Reduced acylated graphene oxide and method for preparing the same

Grant US12583751B2 Kind: B2 Mar 24, 2026

Assignee

KOREA INSTITUTE OF ENERGY RESEARCH

Inventors

Seung Hae Hwang, Chang-soo Jin, Kyoung-hee Shin, Sun-hwa Yeon, Se-Kook Park, Dong Ha Kim

Abstract

Provided are reduced acylated graphene oxide as an electrode active material and a method for preparing the same. By the method for preparing reduced acylated graphene oxide according to the present invention, a negative electrode active material for a lithium secondary battery having stable activity and a high battery capacity may be prepared with a simple and low-cost process. In addition, the active material prepared by the preparation method has low resistance, a high battery capacity, and improved rate-limiting characteristics while having stable cycle characteristics.

CPC Classifications

C01B 32/184 C01B 32/192 C01B 32/23 C01B 32/194 C01B 32/182 C01B 32/186 C01B 32/188 C01B 32/19 C01B 32/196 C01B 32/198 C07C 45/61 H01M 4/663 H01M 4/587 H01M 10/0525 H01M 2004/027 B82Y 30/00 B82Y 40/00 Y02E 60/10 B01J 19/126 C01P 2002/72 C01P 2006/11 C01P 2006/12 C01P 2006/14