title: Carbon-wrapped Fe3O4 nanoparticle films grown on nickel foam as binder-free anodes for high-rate and long-life lithium storage.
abstract: 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.
authors: School of Physical Science and Technology, and Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou University , Lanzhou 730000, China.
authors: Dan
authors: D
authors: Li
authors: Xiuwan
authors: X
authors: Li
authors: Suiyan
authors: S
authors: Wang
authors: Yunxian
authors: Y
authors: Zheng
authors: Li
authors: L
authors: Qiao
authors: Deyan
authors: D
authors: He