Fig. 3
From: Alkaline earth metal vanadates as sodium-ion battery anodes
Electrochemical properties of CaV4O9 nanowires and VO2 nanowires as SIB anodes. a Discharge/charge profiles of CVO-450 after different numbers of cycles at 100 mA g−1. b I–V curves of CVO-450 and VO2-450 nanowires. Inset is the SEM image of the CVO-450 single nanowire device. Scale bar, 10 µm. c Rate performances of CVO-450, CVO-550, and VO2-450 at different current densities of 100, 300, 500, 1000, 2000 and 5000 mA g−1. d Cycling performances and Coulombic efficiency of CVO-450, CVO-550, and VO2-450 at a current density of 1000 mA g−1
