Author/Authors :
Dehno Khalaji, Aliakbar Department of Chemistry - Faculty of Science - Golestan University, Gorgan, Iran , Jarosova, Marketa Institute of Physic of the Czech Academy of Sciences - v.v.i., Na Slovance 2, 182 21 Prague 8, Czech Republic , Machek, Pavel Institute of Physic of the Czech Academy of Sciences - v.v.i., Na Slovance 2, 182 21 Prague 8, Czech Republic , Chen, Kunfeng State Key Laboratory of Rare Earth Resource Utilization - Changchun Institute of Applied Chemistry - Chinese Academy of Sciences, Changchun 130022, China , Xue, Dongfeng State Key Laboratory of Rare Earth Resource Utilization - Changchun Institute of Applied Chemistry - Chinese Academy of Sciences, Changchun 130022, China
Abstract :
In this research, a convenient, simple and rapid route for the preparation
of Co3O4 nanoparticles using the calcination of Co(NO3)2∙6H2O at the
presence of benzoic acid (1:1 weight ratio) is reported. Further, the asprepared
Co3O4 nanoparticles were characterized by X-ray powder
diffraction (XRD) and transmission electron microscopy (TEM). XRD
result confirmed the Co3O4 nanoparticles are pure phase and the average
crystallite size for Co3O4 nanoparticles was found 77 nm. The TEM
images reveal nanoparticles with size ranging from 50 to 100 nm, which is
in conformity with the calculation of average crystallite sizes from XRD
patterns. Furthermore, the prepared Co3O4 nanoparticles were investigated
as an anode material for Li-ion batteries. Results showed that the Co3O4
nanoparticles exhibited excellent electrochemical performance and cycling
stability, a capacity of 1127 mA h g-1 was obtained at 100 mAg-1 and the
samples exhibited stable discharge behavior up to 130 cycles with high
rate capability.
Keywords :
Calcination , Electrochemical performance , Li-Ion batteries , Nanoparticles
