Researchers are exploring iron-based batteries as a sustainable alternative to lithium-ion for energy storage. Adding silicate improves efficiency, making it promising for storing renewable energy on a large scale.https://www.notebookcheck.net/Silicate-enhanced-iron-batteries-could-transform-energy-storage-for-EVs-and-renewable-systems.904800.0.html
These batteries have a much bigger problem, which is that their energy density is 8-10x lower than LFP. For energy storage, Form Energy's technology is much more interesting