Ein Forschungsteam hat eine kostengünstige, ultradünne, flexible Folie entwickelt, die den Temperaturunterschied zwischen dem menschlichen Körper und der Umgebungsluft in Elektrizität umwandelt und so Batterien überflüssig macht

>In this study, the team introduced a cost-effective technology for making flexible thermoelectric films by using tiny crystals, or “nanobinders”, that form a consistent layer of bismuth telluride sheets, boosting both efficiency and flexibility.
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>“We created a printable A4-sized film with record-high thermoelectric performance, exceptional flexibility, scalability and low cost, making it one of the best flexible thermoelectrics available,” Professor Chen said.
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>The team used “solvothermal synthesis”, a technique that forms nanocrystals in a solvent under high temperature and pressure, combined with “screen-printing” and “sintering.” The screen-printing method allows for the large-scale film production, while sintering heats the films to near-melting point, bonding the particles together.

Paper: [Nanobinders advance screen-printed flexible thermoelectrics | Science](https://www.science.org/doi/10.1126/science.ads5868)

– achieved a normalized power density of >3 μW cm−2 K−2, ranking among the highest in screen-printed devices

Not very high but could be used also to extend batteries life, not only replace them

So theoretically you could put this on a jacket to make it heated. Sign me up!