High-capacity graphene oxide/graphite/carbon nanotube composites for use in Li-ion battery anodes

• Published in: Carbon (New York) Vol. 74; pp. 153 - 162
• Main Authors: Zhang, Jingxian, Xie, Zhengwei, Li, Wen, Dong, Shaoqiang, Qu, Meizhen
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 01.08.2014; Elsevier
• Subjects: Anodes; Applied sciences; Carbon; Carbon nanotubes; Cross-disciplinary physics: materials science; rheology; Direct energy conversion and energy accumulation; Electrical engineering. Electrical power engineering; Electrical power engineering; Electrochemical conversion: primary and secondary batteries, fuel cells; Exact sciences and technology; Fullerenes and related materials; diamonds, graphite; Graphene; Graphite; Lithium-ion batteries; Materials science; Nanocrystalline materials; Nanoscale materials and structures: fabrication and characterization; Nanotubes; Oxides; Particulate composites; Physics; Specific materials; Lithium battery; Composite materials; Graphite; Carbon nanotubes; Ions; Carbon fiber reinforced plastics; Graphene oxide; Anodes; Nanostructured materials; Particles
• ISSN: 0008-6223; 1873-3891
• DOI: 10.1016/j.carbon.2014.03.017

A composite of graphene oxide sheets, carbon nanotubes (CNTs), and commercial graphite particles was prepared. The composite’s use as a high-capacity and binder-free anode material for Li-ion batteries was examined. Results showed that this novel composite had a very high reversible Li-storage capacity of 1172.5mAhg−1 at 0.5C (1C=372mAg−1), which is thrice that of commercial graphite anode. The composite also exceeded the theoretical sum of capacities of the three ingredients. More importantly, its reversible capacity below 0.25V can reach up to 600mAhg−1. In summary, the graphene oxide/graphite/CNT composite had higher reversible capacity, better cycling performance, and similar rate capability compared with the graphene oxide/graphite composite.