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US-2024327221-A1 · Oct 3, 2024 · US
Reduced acylated graphene oxide and method for preparing the same
US12583751B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12583751-B2 |
| Application number | US-202217986174-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 14, 2022 |
| Priority date | Nov 18, 2021 |
| Publication date | Mar 24, 2026 |
| Grant date | Mar 24, 2026 |
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Abstract
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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.
First claim
Opening claim text (preview).
What is claimed is: 1 . A method for preparing reduced acylated graphene oxide, the method comprising: (a) subjecting graphene oxide to an acylation reaction to prepare acylated graphene oxide; (b) reducing the acylated graphene oxide; and wherein the acylated graphene oxide is graphene oxide bound to R—C(═O)— or R—C(═O)O—, wherein R is C1 or higher alkyl or C5 or higher aryl. 2 . The method for preparing reduced acylated graphene oxide of claim 1 , wherein the reducing of (b) is performed in the presence of a solid reducing agent. 3 . The method for preparing reduced acylated graphene oxide of claim 2 , wherein the solid reducing agent is carbonaceous powder. 4 . The method for preparing reduced acylated graphene oxide of claim 3 , wherein the carbonaceous powder is carbon black. 5 . The method for preparing reduced acylated graphene oxide of claim 1 , wherein the reducing of (b) is performed by irradiating a mixture of the acylated graphene oxide and a reducing agent with microwaves.
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containing carbon or carbonaceous materials as conductive part, e.g. graphite, carbon fibres · CPC title
Nanotechnology for materials or surface science, e.g. nanocomposites · CPC title
Manufacture or treatment of nanostructures · CPC title
by reactions not involving the formation of >C = O groups · CPC title
Negative electrodes · CPC title
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- What does patent US12583751B2 cover?
- 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, th…
- Who is the assignee on this patent?
- Korea Inst Energy Res
- What technology area does this patent fall under?
- Primary CPC classification C01B32/184. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Mar 24 2026 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).