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Scalable printing high-performance and self-healable Ag2Se/terpineol nanocomposite film for flexible thermoelectric device.
- Source :
-
Energy . Jun2024, Vol. 296, pN.PAG-N.PAG. 1p. - Publication Year :
- 2024
-
Abstract
- Flexible thermoelectric (TE) generators (f-TEGs) are promising candidates to power explosively growing wearable electronics by continually converting body heat into electricity. However, intrinsic brittleness, unscalability, and high costs hinder high-performance bulk TE materials from application as f-TEGs. Herein, we report a flexible and self-healable Ag 2 Se/terpineol composite film on a nylon membrane prepared by first one-pot synthesis of Ag 2 Se powder, then screen-printing, and finally low-temperature (473 K) heat treatment. Microstructure observations reveal that the film is dense and that it consists of nano to micron Ag 2 Se grains with coherent- and semicoherent grain boundaries and a very small amount of terpineol at nanopores and/or grain boundaries. Because of the unique microstructure and synergistic effect of the two components, an optimal film exhibits a high power factor of 1550 μW m−1 K−2 (corresponding zT ∼ 0.8) at room temperature and good mechanical properties (flexibility, anti-tensile property, and self-healing ability). A six-leg f-TEG assembled with the film shows a power density of 16.23 W m−2 at a temperature difference of 34.1 K and excellent flexibility. • Ag 2 Se/terpineol nanocomposite films were prepared by a screen-printing technique. • An optimal film exhibits a power factor of 1550 μW m−1 K−2 at room temperature. • The film possesses good flexibility, anti-tensile property, and self-healing ability. • A six-leg f-TEG assembled shows a high output property and excellent flexibility. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 03605442
- Volume :
- 296
- Database :
- Academic Search Index
- Journal :
- Energy
- Publication Type :
- Academic Journal
- Accession number :
- 176631571
- Full Text :
- https://doi.org/10.1016/j.energy.2024.131232