Due to its amphoteric nature you could use it as a cathode material for several ionic systems, or use it as an anode material in flouride or polysulfide ion systems. The downer is that vanadium is an extremely toxic metal and it needs a conductive scaffold to work, most commonly silver. Why dontbwe get all these batery researchers together and make a cheap, enviromentally friendly, high capacity long life battery.❤
