Cable-like β-AgVO3@PPy Nanowires as Novel Anode Materials for Lithium-Ion Batteries

Abstract

β-AgVO3 has been considered as an ideal cathode material for lithium primary batteries for medical devices. Considering its tunnel structure and multiple reductions of both silver and vanadium, β-AgVO3 may be a promising anode material for lithium-ion batteries (LIBs). Herein, we synthesize cable-like β-AgVO3@polypyrrole (PPy) nanowires by chemical oxidative polymerization of pyrrole on the surface of the microwave-hydrothermally (M-H) synthesized β-AgVO3 nanowires. The electrochemical behaviors and the discharge/charge mechanism of the as-prepared cable-like β-AgVO3@PPy nanowires as the anode for LIBs are studied for the first time. The cable-like β-AgVO3@PPy nanowire electrode exhibits higher discharge capacity, better cycle stability, and lower apparent activation energy. The present study indicates that the PPy coating is beneficial to improve the electronic/ion conductivity, reduce charge transfer resistance, and maintain structural stability during the cycling process.