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Wow: Renewable Batteries Made From Plain Sand Could Replace Lithium

At a glance

  • Two young engineers in Finland have created a new kind of battery made from sand and water that has an impressive capacity to store large amounts of energy while also being environmentally friendly.
  • Works by filling up a metal silo with sand. A computer monitors and converts the electric energy from wind turbines or solar panels into heat energy. The sand then stores the heat and can convert it back into electricity.

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