Synthesis of BiVO 4 nanostructures via Hydrothermal Synthesis: Evaluation of its Electrochemical Lithium ion battery performance

In this work, bismuth vanadate (BiVO ₄ ) NPs were prepared by a low temperature hydrothermal route and were well characterized to assess their electrochemical performances as an anode material for lithium-ion battery (LIB). X-ray diffraction (XRD) established the development of single monoclinic phase with a mean crystallite size of 67 nm. Fourier-transform infrared (FTIR) and Raman spectroscopy studies confirmed the occurrence of Bi-O and V-O vibrational modes, confirming the structural composition of the material synthesized. UV-Vis diffuse reflectance spectroscopy (DRS) confirmed an optical band gap of around 2.2 eV. Electrochemical performance investigations indicated that the BiVO ₄ electrode provided an initial discharge capacity of 198 mAh g ^− 1 at 0.1C (C/10), which decreased gradually to 104 mAh g ^− 1 at 54 cycles while retaining a Coulombic efficiency of about 98%. In addition, at a current density of 50 mA g ^− 1 , the electrode retained a stable capacity of 100 mAh g ^− 1 even at 500 cycles. The synergized structural stability, high lithium storage capacity, and superior cycling life highlight the promise of BiVO ₄ as a good anode material for future lithium-ion batteries.