German engineers have developed a groundbreaking salt-and-air battery capable of lasting for decades while storing renewable power without relying on lithium or harmful metals.
This innovation directly addresses one of the green transition’s toughest challenges: storing solar and wind energy during periods when the sun isn’t shining and the wind isn’t blowing.
The technology relies on a reversible chemical reaction between salt, air, and iron compounds, offering a stable, low-cost, and environmentally friendly energy storage solution. Unlike lithium-ion batteries, which degrade over time, salt-air batteries are built from abundant, safe, and inexpensive materials.
If widely deployed, the breakthrough could significantly reduce dependence on lithium mining, which is both resource-intensive and damaging to ecosystems. With this step, Germany is positioning itself at the forefront of sustainable, scalable, and affordable energy storage solutions
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