Ni3V2O8 nanoparticles as an excellent anode material for high-energy lithium-ion batteries

Nickel vanadate (Ni3V2O8, NVO) nanoparticles (NPs) with a typical size of 30 nm were prepared through a zeolitic imidazolate framework (ZIF) intermediate precipitation method using water as a solvent. The intermediate and the NVO obtained after annealing the intermediate were systematically characterized using various techniques. When tested as an anode for Li-ion batteries (LIBs), the electrode displayed stable specific capacities of 940 and 305 mA h g(-1) at 1 and 5 A g(-1), respectively, after 400 and 1000 cycles. Additionally, a very high reversible capacity of 1024 mA h g(-1) was observed after 525 cycles, during which high current densities of 2 and 0.5 A g(-1) alternated every 100 cycles. The long cycling rate capability with repeated sets, confirm the structural stability of the material, which was prepared through a facile and eco-friendly procedure.