Thermoelectric properties of nanoporous three-dimensional graphene networks

Thermoelectric properties of nanoporous three-dimensional graphene networks

We propose three dimensional-graphene nanonetworks (3D-GN) with pores in the range of 10 ∼ 20 nm as a potential candidate for thermoelectric materials. The 3D-GN has a low thermal conductivity of 0.90 W/mK @773 K and a maximum electrical conductivity of 6660 S/m @ 773 K. Our results suggest a straig...

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Veröffentlicht in:Applied physics letters 2014-07, Vol.105 (3)
Hauptverfasser: Thiyagarajan, Pradheep, Oh, Min-Wook, Yoon, Jong-Chul, Jang, Ji-Hyun
Format: Artikel
Sprache:eng
Schlagworte:
Applied physics
Electrical resistivity
Figure of merit
Graphene
Thermal conductivity
Thermoelectric materials
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Zusammenfassung:We propose three dimensional-graphene nanonetworks (3D-GN) with pores in the range of 10 ∼ 20 nm as a potential candidate for thermoelectric materials. The 3D-GN has a low thermal conductivity of 0.90 W/mK @773 K and a maximum electrical conductivity of 6660 S/m @ 773 K. Our results suggest a straightforward way to individually control two interdependent parameters, σ and κ, in the nanoporous graphene structures to ultimately improve the figure of merit value.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4883892