I bet we are nowhere near the engineering limit of flow battery energy density. It is fairly limited in research compared to the various conventional battery te

I bet we are nowhere near the engineering limit of flow battery energy density. It is fairly limited in research compared to the various conventional battery technologies. I think a 5x increase in energy density over Vanadium redox (to 100-200 Wh/kg, 75 Wh/kg is achievable by some chemistries already) would put it in striking distance.