Synthesis and characterization of carbon-coated Fe{sub 3}O{sub 4} nanoflakes as anode material for lithium-ion batteries
- School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094 (China)
- Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027 (China)
Graphical abstract: - Highlights: • Carbon-coated Fe{sub 3}O{sub 4} nanoflakes have been synthesized by hydrothermal method. • The nanocomposite electrode shows a large reversible capacity up to 740 mAh g{sup −1}. • The nanocomposite electrode shows promising cycling stability and rate capability. - Abstract: The carbon-coated Fe{sub 3}O{sub 4} nanoflakes were synthesized by partial reduction of monodispersed hematite (Fe{sub 2}O{sub 3}) nanoflakes with carbon coating. The carbon-coated Fe{sub 3}O{sub 4} nanoflakes were characterized by X-ray diffraction, Raman spectroscopy, field emission scanning electron microscopy, transmission electron microscopy, and galvanostatic charge/discharge measurements. It has been demonstrated that Fe{sub 2}O{sub 3} can be completely converted to Fe{sub 3}O{sub 4} during the reduction process and carbon can be successfully coated on the surface of Fe{sub 3}O{sub 4} nanoflakes, forming a conductive matrix. As anode material for lithium-ion batteries, the carbon-coated Fe{sub 3}O{sub 4} nanoflakes exhibit a large reversible capacity up to 740 mAh g{sup −1} with significantly improved cycling stability and rate capability compared to the bare Fe{sub 2}O{sub 3} nanoflakes. The superior electrochemical performance of the carbon-coated Fe{sub 3}O{sub 4} nanoflakes can be attributed to the synthetic effects between small particle size and highly conductive carbon matrix.
- OSTI ID:
- 22285214
- Journal Information:
- Materials Research Bulletin, Vol. 48, Issue 11; Other Information: Copyright (c) 2013 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
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