Polypyrrole-coated LiV₃O₈-nanocomposites with good electrochemical performance as anode material for aqueous rechargeable lithium batteries

A polypyrrole-coated LiV₃O₈ nanocomposite was prepared as anode material (negative mass) for aqueous rechargeable lithium batteries and characterized by X-ray diffraction, scanning electron microscopy, and electrochemical measurements. Polypyrrole acts as a conducting matrix as well as a coating agent, which held LiV₃O₈ nanorods inside the particles during the charge/discharge cycles. Results show that the electrochemical performance of the PPy@LiV₃O₈ nanocomposite is significantly enhanced showing higher capacity and better rate capability as well as better cycling performance compared to pristine LiV ₃O₈.