Effect of degree of reduction on the anode performance of reduced graphene oxide in Li-ion batteries. Issue 105 (12th October 2015)

• Record Type: Journal Article
• Authors: Kim, Sujin; Park, Gyutae; Sennu, Palanichamy; Lee, Seungjun; Choi, Kwangrok; Oh, Junghoon; Lee, Yun-Sung; Park, Sungjin
• Is Part Of: RSC advances. Volume 5:Issue 105(2015)
• Page Start: 86237
• Page End: 86241
• Publication Date: 2015-10-12
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c5ra13890f
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : The reduced graphene oxide sample with the lowest degree of reduction delivers the highest anodic capacity and good durability in Li-ion batteries. Abstract : Graphene-based materials are considered to be promising anodes for achieving high energy and power densities in Li-ion batteries (LIBs). Despite intensive research on reduced graphene oxide (rG-O) on this aspect, few have addressed the relationship between LIB performance and the degree of reduction of graphene oxide. In this work, we study the performance of LIB anodes using rG-O materials with different oxygen levels. A series of rG-O samples is produced by refluxing an aqueous graphene oxide suspension for different durations. The C/O ratios of the materials are found to increase gradually from approximately 1 to 6, with no heteroatoms other than oxygen atoms. The rG-O sample with the lowest degree of reduction delivers the highest anodic capacity and good durability.