One-Step Fabrication of Fe-Si-O/Carbon Nanotube Composite Anode Material with Excellent High-Rate Long-Term Cycling Stability
ABSTRACTThe composite Li-ion battery anode material of Fe2SiO4, Fe3O4, Fe3C (Fe-Si-O) and carbon nanotubes was prepared by a simple one-step reaction between ferrocene and tetraethyl orthosilicate. When cycled at 100 mA g-1, this material exhibited ever-increasing capacities and reached 588 mAh g-1 at the 280th cycle. At 500 mA g-1, a reversible capacity of 350 mAh g-1 was retained for 600 cycles. Compared with Fe3O4 materials, the Fe-Si-O/CNT exhibited superior long-term high-rate performance, which could mainly result from its enhanced stability and conductivities by introducing silicates and CNTs during the one-step synthesis.
2011 ◽
Vol 13
(12)
◽
pp. 1357-1360
◽
2010 ◽
Vol 150-151
◽
pp. 1387-1390
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