Thermoelectric energy harvesting from single-walled carbon nanotube alkali-activated nanocomposites produced from industrial waste materials

Davoodabadi M, Vareli I, Liebscher M, Tzounis L, Sgarzi M, Paipetis AS, Yang J, Cuniberti G, Mechtcherine V (2021)

Publication Type: Journal article

Publication year: 2021

Journal

Nanomaterials MDPI

Book Volume: 11

Article Number: 1095

Journal Issue: 5

DOI: 10.3390/nano11051095

Abstract

A waste-originated one-part alkali-activated nanocomposite is introduced herein as a novel thermoelectric material. For this purpose, single-walled carbon nanotubes (SWCNTs) were utilized as nanoinclusions to create an electrically conductive network within the investigated alkali-activated construction material. Thermoelectric and microstructure characteristics of SWCNT-alkali-activated nanocomposites were assessed after 28 days. Nanocomposites with 1.0 wt.% SWCNTs exhibited a multifunctional behavior, a combination of structural load-bearing, electrical conductivity, and thermoelectric response. These nanocomposites (1.0 wt.%) achieved the highest thermoelectric performance in terms of power factor (PF), compared to the lower SWCNTs’ incorporations, namely 0.1 and 0.5 wt.%. The measured electrical conductivity (σ) and Seebeck coefficient (S) were 1660 S·m−1 and 15.8 µV·K−1, respectively, which led to a power factor of 0.414 µW·m−1·K−2 . Consequently, they have been utilized as the building block of a thermoelectric generator (TEG) device, which demon-strated a maximum power output (Pout ) of 0.695 µW, with a power density (PD) of 372 nW·m−2, upon exposure to a temperature gradient of 60 K. The presented SWCNT-alkali-activated nanocomposites could establish the pathway towards waste thermal energy harvesting and future sustainable civil engineering structures.

Involved external institutions

Technische Universität Dresden DE Germany (DE) University of Ioannina / Πανεπιστήμιο Ιωαννίνων GR Greece (GR) Shanghai Jiao Tong University / 上海交通大学 CN China (CN)

How to cite

APA:

Davoodabadi, M., Vareli, I., Liebscher, M., Tzounis, L., Sgarzi, M., Paipetis, A.S.,... Mechtcherine, V. (2021). Thermoelectric energy harvesting from single-walled carbon nanotube alkali-activated nanocomposites produced from industrial waste materials. Nanomaterials, 11(5). https://doi.org/10.3390/nano11051095

MLA:

Davoodabadi, Maliheh, et al. "Thermoelectric energy harvesting from single-walled carbon nanotube alkali-activated nanocomposites produced from industrial waste materials." Nanomaterials 11.5 (2021).

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