• Grippler@feddit.dk
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    4 months ago

    On a laboratory bench in Cambridge, Massachusetts

    For now, the concrete supercapacitor can store a little under 300 watt-hours per cubic metre

    OK then, so this is incredibly far from being near any real world application

    • Thrashy@lemmy.world
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      4 months ago

      The average American house on a basement will have something like 40 m^3 of concrete in its foundation. If all of it could be utilized, that’s still ~12kWhr of storage capacity. Nothing to be sneezed at.