Gram-scale synthesis of F-doped Ni3V2O8 nanorods with high initial Coulombic efficiency as anode for lithium ion batteries

Gram-scale synthesis of F-doped Ni3V2O8 nanorods with abundant oxygen vacancies has been explored via molten-salt method. The size and morphology of the Ni3V2O8 can be dominated by the fluorinion. When served as anode materials, the F-doped Ni3V2O8 nanorods exhibit high initial Coulombic efficiency (ICE) of 90.8%, better cyclability (983 mAh g-1 after 100 cycles at 200 mA g-1) and superior long-term stability (616 mAh g-1 after 500 cycles at 2000 mA g-1). The high ICE and excellent electrochemical properties may be originated from the fast conversion reaction upon lithiation/delithiation and the good electronic conductivity induced by the small size and oxygen vacancies.

Automated summary

Gram-scale synthesis of F-doped Ni3V2O8 nanorods with abundant oxygen vacancies via molten-salt method has been explored. When served as anode materials, the F-doped Ni3V2O8 nanorods exhibit high initial Coulombic efficiency, better cyclability, and superior long-term stability, which may originate from the fast conversion reaction upon lithiation/delithiation and the good electronic conductivity induced by the small size and oxygen vacancies.