‘Freeze-thaw battery’ is adept at preserving its own energy

Credit: CC0 Public Domain

Scientists have created a battery designed for the electric grid that locks in energy for months without losing much storage capacity.

The development of the “freeze-thaw battery,” which freezes its energy for use later, is a step toward batteries that can be used for seasonal storage: saving energy in one season, such as the spring, and spending it in another, like autumn.
The prototype is small, about the size of a hockey puck. But the potential usefulness of the science behind the device is vast, foretelling a time when energy from intermittent sources, like sunshine and …
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