Title :

Thermoelectric properties of bulk multi-walled carbon nanotube - poly(vinylidene fluoride) nanocomposites: Study of the structure/property relationships

Author(s) :

Brun, Jean-Francois [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Binet, Corinne [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Tahon, Jean-Francois [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Addad, Ahmed [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
TRANCHARD, Pauline [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Barrau, Sophie [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]

Journal title :

Synthetic Metals

Pages :

116525

Publisher :

Elsevier BV

Publication date :

2020-11

ISSN :

0379-6779

HAL domain(s) :

Chimie/Matériaux
Chimie/Polymères

English abstract : [en]

The cross-plane thermoelectric properties of multi-walled carbon nanotubes-poly(vinylidene fluoride) (MWCNT-PVDF) nanocomposites were investigated at room temperature as a function of MWCNT content (from 5 to 50 wt%). ...
Show more >The cross-plane thermoelectric properties of multi-walled carbon nanotubes-poly(vinylidene fluoride) (MWCNT-PVDF) nanocomposites were investigated at room temperature as a function of MWCNT content (from 5 to 50 wt%). Special attention was paid to the influence of the nature of the polymer crystal phase. Incorporation of MWCNT induces PVDF polar β-phase formation, coexisting with the major non polar α-phase. Significant improvement of the thermoelectric properties is evidenced, with the best values obtained at 50 wt% MWCNT loading. A post treatment at high temperature (T =165 °C) results in the development of the polar γ-phase from the α- and β-polymorphs. Nanocomposites annealing significantly enhances the Seebeck coefficient, typically from 14 up to 20 μV K−1, yielding a power factor of 4.6 × 10−2 μW m−1 K−2 and a figure of merit ZT of 1.6 × 10−5 at 50 wt%, which is the best ZT value that can be found in the literature, regarding MWCNT-PVDF bulk nanocomposites. Structural analysis underlines for the first time the impact of the polymer polar γ-phase on the nanocomposite thermoelectric properties.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

Université de Lille
CNRS
INRA
ENSCL

Collections :

• Unité Matériaux et Transformations (UMET) - UMR 8207

Research team(s) :

Ingénierie des Systèmes Polymères

Submission date :

2020-09-15T07:56:36Z
2020-09-15T14:24:31Z
2020-10-12T08:20:33Z