Vanadium silicon-oxyfluoride nanowires for lithium storage systems: A perfect synergy for dynamic simple spot synthesis

Polyanionic vanadium silicon oxyfluoride, LiVSiO4F (VSF) nanowire synthesize through a dynamic simple spot
method exposes a multi-redox behavior with excellent reversibility and minimal capacity fade as electrodes in Li-
ion systems. However, the cycling performance of the electrode is under debate due to its conductivity and
polyanionic nature. To address this, an increase in the ratio of a conductive agent like 10%, 20%, and 30% is
intermixed with cathodes, and as a result, the cathodes reveal an increasing electrochemical performance for VSF
30%. At a high current rate of 1Ag− 1
, VSF 20% and 30% express a specific capacity of 164 mAhg− 1 and 230 mAhg− 1 respectively, which is higher than the theoretical capacity. This is due to the anionic redox nature of O and F, apart from transition metal vanadium. VSF 30% exhibits a higher power density of 300Wkg− 1 with an
energy density of 623WhKg− 1 that can be applicable in high-power devices.