Carbon nanotube–polyurethane composite sheets for flexible thermoelectric materials

Par Conseil national de recherches du Canada

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DOI	Trouver le DOI : https://doi.org/10.1021/acsanm.3c03247
Auteur	Rechercher : Paleo, Antonio J.Identifiant ORCID : https://orcid.org/0000-0002-4688-5794; Rechercher : Martinez-Rubi, Yadienka¹Identifiant ORCID : https://orcid.org/0000-0002-1548-6504; Rechercher : Krause, Beate Identifiant ORCID : https://orcid.org/0000-0003-2892-1269; Rechercher : Pötschke, Petra Identifiant ORCID : https://orcid.org/0000-0001-6392-7880; Rechercher : Jakubinek, Michael B.¹Identifiant ORCID : https://orcid.org/0000-0001-6437-2100; Rechercher : Ashrafi, Behnam²; Rechercher : Kingston, Christopher¹Identifiant ORCID : https://orcid.org/0000-0001-6222-8463
Affiliation	Conseil national de recherches du Canada. Technologies de sécurité et de rupture Conseil national de recherches du Canada. Aérospatiale
Bailleur de fonds	Rechercher : National Research Council Canada; Rechercher : European Cooperation in Science and Technology; Rechercher : Foundation for Science and Technology
Format	Texte, Article
Sujet	carbon nanotubes; thermoplastic polyurethane; nanocomposite fabrics; thermal conductivity; thermoelectric properties; composites; thermoelectric materials; thermoelectrics
Résumé	Integration of single-wall carbon nanotubes (SWCNTs) in the form of fabriclike sheets or other preformed assemblies (films, fibers, etc.) simplifies their handling and allows for composites with higher nanotube contents, which is needed to better exploit their outstanding properties and achieve multifunctional materials with improved performance. Here, we show the development of p-type SWCNT–thermoplastic polyurethane (TPU) fabric materials with a wide range of SWCNT contents (from 5 to 90 wt %) by employing a one-step filtration method using a suspension of SWCNTs in a TPU solvent/nonsolvent mixture. The mechanical and thermoelectric (TE) properties of these SWCNT–TPU nanocomposites were tailored by varying the SWCNT/TPU wt % ratio, achieving significant advantages relative to the pristine SWCNT buckypaper (BP) sheets in terms of strength and stretchability. In particular, the SWCNT–TPU nanocomposite with a 50/50 wt % ratio composition (equivalent to 15 vol % of SWCNTs) shows a power factor (PF) of 57 μW m⁻¹ K⁻², slightly higher compared to the PF of the SWCNT BP prepared under the same conditions (54 μW m⁻¹ K⁻²), while its mechanical properties significantly increased (e.g., ∼7-, 25-, and 250-fold improvements in stiffness, strength, and tensile toughness, respectively). These results represent a significant step toward the development of easy-to-process self-supporting and stretchable materials with robust mechanical properties for flexible thermoelectric devices.
Date de publication	2023-09-19
Maison d’édition	American Chemical Society
Licence	Creative Commons, Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/deed.fr
Dans	ACS Applied Nano Materials 6, nº 19 (19 septembre 2023) : 17986–17995.
Langue	anglais
Publications évaluées par des pairs	Oui
Exporter la notice	Exporter en format RIS
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Identificateur de l’enregistrement	633e26fd-6adf-4bae-8127-77f8631aabd4
Enregistrement créé	2024-01-24
Enregistrement modifié	2024-01-24

Date de modification :: 2024-06-29