Will iron-air #batteries become the storage solution for our (near future) #electric grid?

Quote: “…iron-air batteries would be 10 times cheaper, perform better, and last 17 times longer. Right now, these batteries’ primary task would be to bridge the gap when utilities need more power during peak hours… Lithium-ion only provides approximately four hours of storage, whereas iron-air could deliver up to 100 hours…”

https://www.popularmechanics.com/science/energy/a42532492/iron-air-battery-energy-storage/