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- W3048321854 abstract "To recover the low-grade waste heat (300–500 K), it is of urgent importance to develop and improve the thermoelectric performance at a low-temperature region. Herein, we have realized a record high ZT value of 1.4 at 410 K and a record high average ZT value of 0.6 in the temperature interval from 300 to 400 K for Sb-doped Ag2SbxTe1–x (x = 0–0.03) compounds, which show an improvement of 180 and 120% compared to pristine Ag2Te, respectively. Sb doping increases the carrier concentration and electrical conductivity, leading to a remarkable improvement of electrical transport properties. The Ag2Sb0.015Te0.985 sample obtains the maximal power factor of 1.07 × 10–3 W m–1 K–2 at 410 K, which is increased by 80% in comparison to that of pristine Ag2Te. Moreover, as a result of the intensified alloying phonon scattering by Sb doping, Ag2Sb0.01Te0.99 possesses the minimum lattice thermal conductivity of 0.35 W m–1 K–1 at 300 K, which demonstrates a decline of 57% compared to that of pristine Ag2Te. All of these produce a great enhancement on the thermoelectric performance of Ag2Te materials, which shows great potential in the application of recycling the low-grade waste heat at a low-temperature region." @default.
- W3048321854 created "2020-08-13" @default.
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- W3048321854 date "2020-08-06" @default.
- W3048321854 modified "2023-10-15" @default.
- W3048321854 title "Realizing High Thermoelectric Performance in Sb-Doped Ag<sub>2</sub>Te Compounds with a Low-Temperature Monoclinic Structure" @default.
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- W3048321854 doi "https://doi.org/10.1021/acsami.0c10932" @default.
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