High performance temperature difference triboelectric nanogenerator.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 34362901.
- Also identified by DOI 10.1038/s41467-021-25043-2 and PMC identifier 8346487.
- Licence recorded as CC BY.
- The licence permits redistribution, so the abstract is shown in full and the full text is available from the publisher.
Abstract
Usually, high temperature decreases the output performance of triboelectric nanogenerator because of the dissipation of triboelectric charges through the thermionic emission. Here, a temperature difference triboelectric nanogenerator is designed and fabricated to enhance the electrical output performance in high temperature environment. As the hotter friction layer's temperature of nanogenerator is 0 K to 145 K higher than the cooler part's temperature, the output voltage, current, surface charge density and output power are increased 2.7, 2.2, 3.0 and 2.9 times, respectively (from 315 V, 9.1 μA, 19.6 μC m<sup>-2</sup>, 69 μW to 858 V, 20 μA, 58.8 μC m<sup>-2</sup>, 206.7 μW). With the further increase of temperature difference from 145 K to 219 K, the surface charge density and output performance gradually decrease. At the optimal temperature difference (145 K), the largest output current density is 443 μA cm<sup>-2</sup>, which is 26.6% larger than the reported record value (350 μA cm<sup>-2</sup>).