Flow batteries biggest issue has been density. If they have solved it at better cost effectiveness than current EV batteries then it may take off. I doubt the complexity of the electrolyte water solution, pumps, and membranes would really win out against an equivalent electrolyte in a rechargeable battery for car sized volumes.
Where this could be a major use case is large scale grid batteries. That would allow for an effective baseline power store for solar and wind power.
Where this could be a major use case is large scale grid batteries. That would allow for an effective baseline power store for solar and wind power.