p-Type PVA/MWCNT-Sb2Te3 Composites for Application in Different Types of Flexible Thermoelectric Generators in Combination with n-Type PVA/MWCNT-Bi2Se3 Composites
Polymers 2022
Jana Andžāne, Krišjānis Buks, Juris Bitenieks, Lāsma Bugovecka, Artis Kons, Remo Merijs-Meri, Jānis Švirksts, Jānis Zicāns, Donāts Erts

This work is devoted to the fabrication of p-type polyvinyl alcohol (PVA)-based flexible thermoelectric composites using multiwall carbon nanotubes-antimony telluride (MWCNT-Sb2Te3) hybrid filler, the study of the thermoelectrical and mechanical properties of these composites, and the application of these composites in two types (planar and radial) of thermoelectric generators (TEG) in combination with the previously reported PVA/MWCNT-Bi2Se3 flexible thermoelectric composites. While the power factors of PVA/MWCNT-Sb2Te3 and PVA/MWCNT-Bi2Se3 composites with 15 wt.% filler were found to be similar, the PVA/MWCNT-Sb2Te3 composite with 25 wt.% filler showed a ~2 times higher power factor in comparison with the PVA/MWCNT-Bi2Se3 composites with 30 wt.% filler, which is attributed to its reduced electrical resistivity. In addition, developed PVA/MWCNT-Sb2Te3 composites showed a superior mechanical, electrical, and thermoelectric stability during 100 consequent bending cycles down to a 3 mm radius, with insignificant fluctuations of the resistance within 0.01% of the initial resistance value of the not bent sample. Demonstrated for the first time, 2-leg TEGs composed from p-type PVA/MWCNT-Sb2Te3 and n-type PVA/MWCNT-Bi2Se3 composites showed a stable performance under different external loads and showed their potential for applications involving low temperature gradients and power requirements in the range of nW.


Atslēgas vārdi
antimony telluride nanostructures | flexible thermoelectric composites | hybrid network | multiwall carbon nanotubes | polyvinyl alcohol-based composite materials | radial thermoelectric generator
DOI
10.3390/polym14235130
Hipersaite
https://www.mdpi.com/2073-4360/14/23/5130

Andžāne, J., Buks, K., Bitenieks, J., Bugovecka, L., Kons, A., Merijs-Meri, R., Švirksts, J., Zicāns, J., Erts, D. p-Type PVA/MWCNT-Sb2Te3 Composites for Application in Different Types of Flexible Thermoelectric Generators in Combination with n-Type PVA/MWCNT-Bi2Se3 Composites. Polymers, 2022, Vol. 14, No. 23, Article number 5130. ISSN 2073-4360. Available from: doi:10.3390/polym14235130

Publikācijas valoda
English (en)
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