Transport properties of a molybdenum antimonide-telluride with dispersed NiSb nanoparticles
Language
en
Article de revue
This item was published in
Materials Chemistry and Physics. 2021-02, vol. 260, p. 124061 (9 p.)
Elsevier
English Abstract
Polycrystalline Ni0.05Mo3Sb5.4Te1.6 thermoelectric (TE) material samples were mixed with NiSb nanoparticles (60–80 nm) in 0, 0.034, 0.074 and 0.16 vol fractions, then hot-pressed and their TE transport properties were ...Read more >
Polycrystalline Ni0.05Mo3Sb5.4Te1.6 thermoelectric (TE) material samples were mixed with NiSb nanoparticles (60–80 nm) in 0, 0.034, 0.074 and 0.16 vol fractions, then hot-pressed and their TE transport properties were characterized. There was a gradual increase in electrical conductivity with the addition of NiSb nanoparticles. The electrical conductivity (σ) of the 0.16 sample was increased by 163% compared to the NiSb-free sample. Except for the 0.16 sample, all samples showed alloy scattering (σ ~ T−0.5). With an increase in NiSb content, the Fermi energy appeared to be reduced, getting closer to the valence band edge. For all samples, the variation in lattice thermal conductivity with temperature (κl ~ T−0.27) was very similar, indicating that the mode of phonon scattering was the same in all samples.Read less <
English Keywords
NiSb nanoparticles
Solvothermal synthesis
Thermoelectric properties
Interfaces
Mechanical properties
Origin
Hal imported