Electrocaloric cooling devices traditionally comprise sub-millimetre-thick ceramic working bodies surrounded by relatively massive apparatus. Now, cooling devices that are each based on a thin polymer layer have been stacked to yield a composite lightweight device that pumps heat across a wide temperature span.
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X.M. is director of research at Barocal Ltd.
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Moya, X., Mathur, N.D. It’s not about the mass. Nat Energy 5, 941–942 (2020). https://doi.org/10.1038/s41560-020-00741-1