Synthesis of VBO3-carbon composite by ball-milling and microwave heating and its electrochemical properties as negative electrode material of lithium ion batteries

Abstract

Ball-milling and subsequent microwave heating processes have been applied to synthesize VBO3-C composite. The samples were characterized by X-ray diffraction, scanning electron microscope, transmission electron microscope, inductively coupled plasma mass spectroscopy, and electrochemical methods. The VBO3-C composite was successfully prepared after 30 min ball-milling and 13 min microwave heating. The synthesized VBO3-C composite was composed of well crystallized VBO3 particles with well dispersed amorphous carbon and exhibited higher reversible capacity (625 mAh g (1)) and improved cyclic performance than those in previous study. (C) 2012 Elsevier B. V. All rights reserved.