p-Type PVA/MWCNT-Sb2Te3 Composites for Application in Different Types of Flexible Thermoelectric Generators in Combination with n-Type PVA/MWCNT-Bi2Se3 Composites

被引：9

作者：

Andzane, Jana ^{[1
]}

Buks, Krisjanis ^{[1
]}

Bitenieks, Juris ^{[2
]}

Bugovecka, Lasma ^{[1
]}

Kons, Artis ^{[1
]}

Merijs-Meri, Remo ^{[2
]}

Svirksts, Janis ^{[3
]}

Zicans, Janis ^{[2
]}

Erts, Donats ^{[1
,3
]}

机构：

[1] Univ Latvia, Inst Chem Phys, LV-1586 Riga, Latvia

[2] Inst Polymer Mat, Fac Mat Sci & Appl Chem, LV-1048 Riga, Latvia

[3] Univ Latvia, Fac Chem, LV-1586 Riga, Latvia

来源：

POLYMERS | 2022年 / 14卷 / 23期

关键词：

flexible thermoelectric composites; hybrid network; polyvinyl alcohol-based composite materials; multiwall carbon nanotubes; antimony telluride nanostructures; radial thermoelectric generator; NANOCOMPOSITES; SB2TE3;

D O I：

10.3390/polym14235130

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

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 similar to 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.

引用

页数：11

共 22 条

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