The recent gains in Australian Vanadium producer shares suggests that the use of VRB Vanadium Redox batteries is on the rise. They are far superior to Lithium iron batteries with a 20 year life. Not suited for EV's but perfect for industrial energy storage.
KRC, AVL, YRC, YRR to mention a few.
https://www.forbes.com/sites/jamesco.../#665ac175bde8