Xiaoxia Yang, Conglong Fu, Ting Lu, Zhuo Sun and Daniel H.C. Chua Pages 336 - 340 ( 5 )
Background: With the increasing demand for large scale energy storage, people pay more and more attention on the development of sodium-ion batteries (SIBs) because of its low cost and abundance resource. This paper provides a new kind of anode material with satisfied electrical performance for SIBs.
Methods: Fe2O3-carbon composite nanofibers (FeCNFs) were synthesized through an uncomplicated and meliorable electrospinning process followed by calcination. The obtained FeCNFs were applied as anode materials for sodium-ion batteries.
Results: The FeCNFs SIBs show excellent performance. At a current density of 50 mA g-1, a high reversible capacity of 606 mA h g-1 is achieved. Moreover, an ideal reversible capacity of 167 mAh g-1 is achieved even at a current density of 500 mA g-1, demonstrating good rate capability of FeCNFs.
Conclusion: As compared with pure carbon nanofibers (CNFs), the capacity and rate capability of FeCNFs are drastically improved due to the homogeneous dispersed Fe2O3 nanoparticles on the surface of carbon nanofibers. Such a structure prevents the aggregation of Fe2O3 nanoparticles, maintains the structure integrity and thus enhances the electrochemical performance.
Anode materials, electrospun, Fe2O3-carbon composite nanofibers, sodium-ion battery.
Engineering Research Center for Nanophotonics & Advanced Instrument, Ministry of Education, Department of Physics, East China Normal University, Shanghai, P.R. China.