New twist on old technique could extract electricity from low-grade heat

Pyroelectricity could extract energy from heat sources below100°C, offering an alternative to thermo-electric generators (TEGs). TEGs make electricity through the Seebeck effect, where different conductive materials in contact develop a potential difference across the contact point. Pyroelectric materials, in contrast, develop a potential across a crystal of one material due to electrons shifting as a ...

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