Reduced acylated graphene oxide and method for preparing the same
AssigneeKorea Institute of Energy Research
InventorsSeung Hae Hwang, Chang-soo Jin, Kyoung-hee Shin, Sun-hwa Yeon, Se-Kook Park, Dong Ha Kim
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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.
Claims5
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.
Dependencies are inferred from the claim text.