Studies of the electrochemical properties of nanosize Co3O4 oxide as an anode material for lithium-ion batteries

Abstract

Nanosize cobalt oxides (CoJ0 4) were synthesized by chemical decomposition of cobalt octacarbonyl (Co,(CO)g) in toluene at the low temperature of 130·C. The crystallinity and microstructure were characterized using X-ray diffraction and scanning electron microscopy. The electrochemical properties of electrodes made of nanosized COJ04 particles were tested in Li-ion cells. The nanosized COJ04 electrode material demonstrates a stable reversible lithium storage capacity of about 460 mAhlg over 30 cycles.