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High-Performance Ag-Se-Based n-Type Printed Thermoelectric Materials for High Power Density Folded Generators
- High-performance Ag–Se-based n-type printed thermoelectric (TE) materials suitable for room-temperature applications have been developed through a new and facile synthesis approach. A high magnitude of the Seebeck coefficient up to 220 μV K–1 and a TE power factor larger than 500 μW m–1 K–2 for an n-type printed film are achieved. A high figure-of-merit ZT ∼0.6 for a printed material has beenHigh-performance Ag–Se-based n-type printed thermoelectric (TE) materials suitable for room-temperature applications have been developed through a new and facile synthesis approach. A high magnitude of the Seebeck coefficient up to 220 μV K–1 and a TE power factor larger than 500 μW m–1 K–2 for an n-type printed film are achieved. A high figure-of-merit ZT ∼0.6 for a printed material has been found in the film with a low in-plane thermal conductivity κF of ∼0.30 W m–1 K–1. Using this material for n-type legs, a flexible folded TE generator (flexTEG) of 13 thermocouples has been fabricated. The open-circuit voltage of the flexTEG for temperature differences of ΔT = 30 and 110 K is found to be 71.1 and 181.4 mV, respectively. Consequently, very high maximum output power densities pmax of 6.6 and 321 μW cm–2 are estimated for the temperature difference of ΔT = 30 K and ΔT = 110 K, respectively. The flexTEG has been demonstrated by wearing it on the lower wrist, which resulted in an output voltage of ∼72.2 mV for ΔT ≈ 30 K. Our results pave the way for widespread use in wearable devices.…
Document Type: | Article (reviewed) |
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Zitierlink: | https://opus.hs-offenburg.de/4347 | Bibliografische Angaben |
Title (English): | High-Performance Ag-Se-Based n-Type Printed Thermoelectric Materials for High Power Density Folded Generators |
Author: | Mofasser Mallick, Andres Georg Rösch, Leonard Franke, Sarfraz Ahmed, Andre Gall, Jasmin Aghassi-HagmannORCiDGND, Holger Geßwein, Uli Lemmer |
Year of Publication: | 2020 |
Creating Corporation: | American Chemical Society |
Place of publication: | Washington, DC |
First Page: | 19655 |
Last Page: | 19663 |
Parent Title (English): | ACS Applied Materials & Interfaces |
Volume: | 12 |
Issue: | 17 |
ISSN: | 1944-8244 (Print) |
ISSN: | 1944-8252 (Online) |
DOI: | https://doi.org/10.1021/acsami.0c01676 |
Language: | English | Inhaltliche Informationen |
Institutes: | Fakultät Elektrotechnik, Medizintechnik und Informatik (EMI) (ab 04/2019) |
Institutes: | Bibliografie | Formale Angaben |
Open Access: | Closed Access |
Licence (German): | Urheberrechtlich geschützt |