Hollow CoFe(2)O(4) nanospheres as a high capacity anode material for lithium ion batteries

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Journal Article
Nanotechnology, 2012, 23 (5), pp. 1 - 6
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Hollow structured CoFe(2)O(4) nanospheres were synthesized by a hydrothermal method. The uniform hollow nanosphere architecture of the as-prepared CoFe(2)O(4) 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. CoFe(2)O(4) 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. CoFe(2)O(4) could be a promising high capacity anode material for lithium ion batteries.
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