One-step synthesis of micro/nano flower-like Ni3V2O8 as anode for Li-ion batteries

Abstract A micro/nano flower-like Ni 3 V 2 O 8 superstructure composed of uniform two-dimensional (2D) nanoplates with thicknesses of 20–50 nm had been successfully synthesized using a facile one-step hydrothermal approach. It was found that the pH value of the mixed precursor solutions played a key role in the formation of flower-like Ni 3 V 2 O 8 structure. Importantly, the flower-like Ni 3 V 2 O 8 exhibited a high reversible capacity, good cycling stability (1047.8 mA h g −1 at 200 mA g −1 after 300 cycles), and superior rate capability (640.8 mA h g −1 at 3200 mA g −1 ) as an anode material for Li-ion batteries. Furthermore, the lithium storage mechanism of Ni 3 V 2 O 8 involving in a conversion reaction and an intercalation reaction was proposed by ex situ XRD analyses.