Liquid flow battery made of iron

Decades-long grid storage unlocked with new hydrogen

Hydrogen-iron flow battery could deliver 25-year grid energy storage with 80% efficiency The design uses abundant materials like hydrogen and iron

Iron Flow Chemistry

Our iron flow batteries work by circulating liquid electrolytes — made of iron, salt, and water — to charge and discharge electrons, providing up to 12 hours of storage capacity.

PNNL Researchers Develop All-Liquid Iron Flow Batteries for Utility

While iron-based flow batteries have been around for decades, this iteration has the ability to store energy in a unique chemical formula comprised of charged iron and a neutral-pH

New all-liquid iron flow battery for grid energy storage

What makes this battery different is that it stores energy in a unique liquid chemical formula that combines charged iron with a neutral-pH phosphate-based liquid electrolyte, or energy carrier.

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