Article

Preparation and electrochemical performance of spherical Fe3O4 as anode materials for Li-ion batteries

Science in China Series E Technological Sciences (impact factor: 1.02). 04/2012; 52(11):3219-3223. DOI:10.1007/s11431-009-0310-2 pp.3219-3223

ABSTRACT Fe3O4 nano-powder was prepared by the hydrothermal method. The structure and morphology of the product were characterized by X-ray
diffraction (XRD) and scanning electronic microscopy (SEM). The as-prepared powder has regularly spherical morphology, and
the average size of product is about 25 nm. The possible application use of this material as the active mass of anode for
rechargeable Li batteries was examined by cyclic voltammeter (CV), galvanostatic charge/discharge. The experimental results
showed that this material exhibited large specific capacity at the first cycle, and the discharge and charge capacity retention
of this electrode are 37.04% and 48.76%, respectively. Furthermore, the impedance change of Fe3O4 electrode under different cycle number and potential was examined.

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Keywords

anode
 
as-prepared powder
 
average size
 
cyclic voltammeter
 
Fe3O4 nano-powder
 
first cycle
 
galvanostatic charge/discharge
 
hydrothermal method
 
impedance change
 
material exhibited large specific capacity
 
possible application use
 
rechargeable Li batteries
 
scanning electronic microscopy
 
SEM
 
XRD
 

Fangbin Wang