Carbon-Wrapped Fe3O4 Nanoparticle Films Grown on Nickel Foam as Binder-Free Anodes for High-Rate and Long-Life Lithium Storage

• Published in: ACS applied materials & interfaces Vol. 6; no. 1; pp. 648 - 654
• Main Authors: Li, Dan, Li, Xiuwan, Wang, Suiyan, Zheng, Yunxian, Qiao, Li, He, Deyan
• Format: Journal Article
• Language: English
• Published: United States American Chemical Society 08.01.2014
• Subjects: carbon-wrapping; lithium ion battery; hydrothermal process; enhanced rate performance; Fe3O4 nanoparticles
• ISSN: 1944-8244; 1944-8252
• DOI: 10.1021/am404756h

Carbon-wrapped Fe3O4 nanoparticle films on nickel foam were simply prepared by a hydrothermal synthesis with sucrose as a precursor of subsequent carbonization. The as-prepared samples were directly used as binder-free anodes for lithium-ion batteries which exhibited enhanced rate performance and excellent cyclability. A reversible capacity of 543 mA h g–1 was delivered at a current density as high as 10 C after more than 2000 cycles. The superior electrochemical performance can be attributed to the formation of a thin carbon layer which constructs a 3D network structure enwrapping the nanosized Fe3O4 particles. Such an architecture can facilitate the electron transfer and accommodate the volume change of the active materials during discharge/charge cycling.