Iron oxide – rust.

Iron-air batteries have a “reversible rust” cycle that could store and discharge energy ten times more efficiently than cobalt or sodium batteries – at one-tenth the cost. Unlike current lithium-ion batteries which require expensive and toxic materials such as lithium, cobalt, nickel and graphite, the iron-air batteries use iron, the fifth most abundant metal on earth. Not only is iron cheaper it’s also more environmentally friendly.

Battery storage plays a critical role in supporting renewable energy as a viable and sustainable source of power.

Sources: Iron-air batteries are 10 times as cheap as lithium, and will be produced from 2024, Balkan Green Energy News

Form Energy Reveals Iron-Air 100 Hour Storage Battery, Clean Technica

Matter of Facts are small insights into inspiring sustainable solutions.

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