VNb9O25 nanowires with superior electrochemical property towards lithium ion batteries

Niobium-based compounds are extensively studied as anode materials for LIBs on account of the great structural stability and high theoretical capacity. Among them, VNb9O25 has an attractive theoretical capacity (416 mAh g−1). Unfortunately, low electronic conductivity and Li+ diffusivity hinder its practical application. To overcome above barriers, VNb9O25 nanowires were synthesized directly by electrospinning method. As expected, VNb9O25 nanowires deliver an outstanding capacity retention (92.1% after 200 cycles) and a robust rate property (90.7 mAh g−1 at 1000 mA g−1). Thus, as-electrospun VNb9O25 nanowires are alternative promising anode materials for LIBs.