Ying Wang et al 2012 Nanotechnology 23 055402 doi:10.1088/0957-4484/23/5/055402
Ying Wang1, Dawei Su1, Alison Ung1, Jung-ho Ahn2 and Guoxiu Wang1
Show affiliationsHollow structured CoFe2O4 nanospheres were synthesized by a hydrothermal method. The uniform hollow nanosphere architecture of the as-prepared CoFe2O4 has been confirmed by field emission scanning electron microscopy and transmission electron microscopy analysis, which give an outer diameter of 200–300 nm and a wall thickness of about 100 nm. CoFe2O4 nanospheres exhibited a high reversible capacity of 1266 mA h g−1 with an excellent capacity retention of 93.6% over 50 cycles and an improved rate capability. CoFe2O4 could be a promising high capacity anode material for lithium ion batteries.
81.07.Bc Nanocrystalline materials
68.37.Hk Scanning electron microscopy (SEM) (including EBIC)
68.37.Vj Field emission and field-ion microscopy
Surfaces, interfaces and thin films
Issue 5 (10 February 2012)
Received 31 October 2011, in final form 6 December 2011
Published 11 January 2012
Ying Wang et al 2012 Nanotechnology 23 055402
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