Synthesis and electrochemical properties of Bi₂WO₆/C anode for lithium ion battery

The Bi2WO6/carbon (BWO/C) micron flowers are synthesized by hydrothermal method combined with heat treatment using the sodium tungstate and bismuth nitrate as well as palm bark carbon as raw materials. The palm bark carbon was prepared firstly by hydrothermal method combined with high-temperature treatment. The BWO/C was characterized by XRD, SEM, and TEM techniques. The BWO/C took on morphology of irregular micron flowers with an average diameter of about 0.5 mu m which were assembled from nanoparticles. The BWO/C was investigated as anode material by battery test system and electrochemical workstation. The specific capacity of BWO/C could maintain at 436.1 mAh center dot g(-1) after 200 cycles, which is much better than that of pure BWO (Bi2WO6). The passable reasons for BWO/C to behave outstanding electrochemical properties were discussed in our paper. The BWO/C is a promising anode material for future application.