One-pot synthesis of in-situ carbon-coated Fe3O4 as a long-life lithium-ion battery anode
Document Type
Article
Publication Date
3-16-2017
Abstract
Fe3O4 has 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 Fe3O4 octahedron 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-1 at 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-1 after 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.
Publication Source (Journal or Book title)
Nanotechnology
Recommended Citation
Liu, M., Jin, H., Uchaker, E., Xie, Z., Wang, Y., Cao, G., Hou, S., & Li, J. (2017). One-pot synthesis of in-situ carbon-coated Fe3O4 as a long-life lithium-ion battery anode. Nanotechnology, 28 (15) https://doi.org/10.1088/1361-6528/aa6143