title: One-pot synthesis of in-situ carbon-coated Fe3O4as a long-life lithium-ion battery anode.
abstract: Fe3O4has been regarded as a promising anode material for lithium-ion batteries (LIBs) due to its high theoretical capacity, low cost, and environmental friendliness. In this work, we present a one-pot reducing-composite-hydroxide-mediated (R-CHM) method to synthesize in situ carbon-coated Fe3O4(Fe3O4@C) at 280 °C using Fe(NO3)3· 9H2O and PEG800 as raw materials and NaOH/KOH as the medium. The as-prepared Fe3O4octahedron has an average size of 100 nm in diameter, covered by a carbon layer with a thickness of 3 nm, as revealed by FESEM and HRTEM images. When used as anode materials in LIBs, Fe3O4@C exhibited an outstanding rate capability (1006, 918, 825, 737, 622, 455 and 317 mAh g-1at 0.1, 0.2, 0.5, 0.8, 1.0, 1.5 and 2.0 A g-1). Moreover, it presented an excellent cycling stability, with a retained capacity of 261 mAh g-1after 800 cycles under an extremely high specific current density of 2.0 A g-1. Such results indicate that Fe3O4@C can provide a new route into the development of long-life electrodes for future rechargeable LIBs. Importantly, the R-CHM developed in our work can be extended for the synthesis of other carbon-coated electrodes for LIBs and functional nanostructures for broader applications.
authors.affiliation: Faculty of Materials Science & Chemistry, China University of Geosciences, Wuhan, 430074, People's Republic of China.
authors.forename: Min
authors.initials: M
authors.lastname: Liu
authors.forename: Hongyun
authors.initials: H
authors.lastname: Jin
authors.forename: Evan
authors.initials: E
authors.lastname: Uchaker
authors.forename: Zhiqiang
authors.initials: Z
authors.lastname: Xie
authors.forename: Ying
authors.initials: Y
authors.lastname: Wang
authors.forename: Guozhong
authors.initials: G
authors.lastname: Cao
authors.forename: Shuen
authors.initials: S
authors.lastname: Hou
authors.forename: Jiangyu
authors.initials: J
authors.lastname: Li