Journal
NPJ FLEXIBLE ELECTRONICS
Volume 5, Issue 1, Pages -Publisher
SPRINGERNATURE
DOI: 10.1038/s41528-021-00103-1
Keywords
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Funding
- NSFC [62074057]
- Projects of Science and Technology Commission of Shanghai Municipality [19ZR1473800, 18DZ2270800]
- Young Elite Scientists Sponsorship Program by CAST (YESS)
- Fundamental Research Funds for the Central Universities
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A method for fabricating flexible thermoelectric generators using modified paper was proposed, enabling waste heat recovery and the development of a thermal sensor. The experiments showed that the TE generator fabricated with modified paper could achieve an output voltage of around 41.2 mV.
Paper, as a foldable, pollution-free, and low-cost material, has become a suitable support substrate for producing flexible thermoelectric (TE) generators to realize waste heat recycling and the application of human-powered electronic devices. We propose a facile fabrication method to modify cellulose paper with inorganic TE powders via vacuum filtration, making a modified paper that possesses good thermoelectric properties. By connecting the modified paper to copper foils, flexible paper-based TE generators (PTGs) are fabricated. The obtained PTG with three units of P-N modules can generate an output voltage of similar to 41.2 mV at a temperature difference of 50 K. Based on this modified paper, a thermal sensor that responds to heat sources, such as fingers, is proposed with a rapid response time of 0.25 s. This work offers a promising strategy for the simple fabrication of PTGs, paving the way for achieving the commercial application of self-powered wearable electronics.
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