Researchers have developed a new dielectric capacitor -- a device that stores energy like a battery -- taking inspiration from how the French pastry, croissant, is made by folding multiple layers of dough.
About:
Croissants are made by pressing and folding dough to create a layered pastry. The researchers applied this technique to a dielectric capacitor, which is a device that stores energy like a battery.
By pressing and folding a polymer film capacitor -- a capacitor with an insulating plastic film -- they were able to store 30 times more energy than the best-performing commercially available dielectric capacitor, biaxially oriented polypropylene (BOPP).
The study, published in the journal Nature Communications, shows that this is the highest energy density ever reported in a polymer film capacitor.
The advance may pave the way for efficient, low-cost, and environmentally-friendly electric energy storage systems for wind and solar sources.
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