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Issue 29, 2017
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Evaporation–condensation effects on the thermoelectric performance of PbTe-based couples

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Abstract

In thermoelectric (TE) generators, Carnot efficiency maximization, by increasing the hot side temperature, is required for maximizing the heat to electricity energy conversion. Yet, volatile species sublimation, apparent in many TE material classes including tellurides, selenides, sulfides, silicides and more, limits the hot side temperature to a certain level, depending on the specific composition. In the current research, the TE performance of a PbTe-based couple subjected to a large temperature difference of an extreme hot side temperature of 600 °C and cold side temperature of 60 °C for 456 h was investigated both experimentally and theoretically and was correlated to evaporation–condensation effects in the vicinity of the hot-side temperature. Only moderate degradation of the maximal electrical power and efficiency was observed showing the promising potential of employing of such couples in practical TE applications.

Graphical abstract: Evaporation–condensation effects on the thermoelectric performance of PbTe-based couples

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Publication details

The article was received on 12 May 2017, accepted on 06 Jul 2017 and first published on 13 Jul 2017


Article type: Paper
DOI: 10.1039/C7CP03159A
Citation: Phys. Chem. Chem. Phys., 2017,19, 19326-19333
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    Evaporation–condensation effects on the thermoelectric performance of PbTe-based couples

    Y. Sadia, D. Ben-Ayoun and Y. Gelbstein, Phys. Chem. Chem. Phys., 2017, 19, 19326
    DOI: 10.1039/C7CP03159A

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