Plasma-jet printing of colloidal thermoelectric Bi2Te3 nanoflakes for flexible energy harvesting
- Boise State University, ID (United States); Oregon State University, Corvallis, OR (United States)
- Boise State University, ID (United States)
- Boise State University, ID (United States); Idaho National Laboratory (INL), Idaho Falls, ID (United States)
Thermoelectric generators (TEGs) convert temperature differences into electrical power and are attractive among energy harvesting devices due to their autonomous and silent operation. While thermoelectric materials have undergone substantial improvements in material properties, a reliable and cost-effective fabrication method suitable for microgravity and space applications remains a challenge, particularly as commercial space flight and extended crewed space missions increase in frequency. This paper demonstrates the use of plasma-jet printing (PJP), a gravity-independent, electromagnetic field-assisted printing technology, to deposit colloidal thermoelectric nanoflakes with engineered nanopores onto flexible substrates at room temperature. We observe substantial improvements in material adhesion and flexibility with less than 2% and 11% variation in performance after 10 000 bending cycles over 25 mm and 8 mm radii of curvature, respectively, as compared to previously reported TE films. Our printed films demonstrate electrical conductivity of 2.5 × 103 S m-1 and a power factor of 70 μW m-1 K-2 at room temperature. To our knowledge, these are the first reported values of plasma-jet printed thermoelectric nanomaterial films. This advancement in plasma jet printing significantly promotes the development of nanoengineered 2D and layered materials not only for energy harvesting but also for the development of large-scale flexible electronics and sensors for both space and commercial applications.
- Research Organization:
- Idaho National Laboratory (INL), Idaho Falls, ID (United States)
- Sponsoring Organization:
- USDOE Office of Nuclear Energy (NE), Nuclear Energy University Program (NEUP); National Aeronautics and Space Administration (NASA); National Science Foundation (NSF); Idaho Global Entrepreneurial Mission (IGEM)
- Grant/Contract Number:
- AC07-05ID14517; 80NSSC19M0151; 2113873; CMMI-1825502; 3732018
- OSTI ID:
- 2228271
- Report Number(s):
- INL/JOU-23-75527-Rev000
- Journal Information:
- Nanoscale, Vol. 15, Issue 14; ISSN 2040-3364
- Publisher:
- Royal Society of ChemistryCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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