High power factor vs. high zT-A review of thermoelectric materials for high-temperature application

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Wolf, M.; Hinterding, R.; Feldhoff, A.: High power factor vs. high zT-A review of thermoelectric materials for high-temperature application. In: Entropy 21 (2019), Nr. 11, 1058. DOI: https://doi.org/10.3390/e21111058

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Energy harvesting with thermoelectric materials has been investigated with increasing attention over recent decades. However, the vast number of various material classes makes it difficult to maintain an overview of the best candidates. Thus, we revitalize Ioffe plots as a useful tool for making the thermoelectric properties of a material obvious and easily comparable. These plots enable us to consider not only the efficiency of the material by the figure of merit zT but also the power factor and entropy conductivity as separate parameters. This is especially important for high-temperature applications, where a critical look at the impact of the power factor and thermal conductivity is mandatory. Thus, this review focuses on material classes for high-temperature applications and emphasizes the best candidates within the material classes of oxides, oxyselenides, Zintl phases, half-Heusler compounds, and SiGe alloys. An overall comparison between these material classes with respect to either a high efficiency or a high power output is discussed.
License of this version: CC BY 4.0 Unported
Document Type: article
Publishing status: publishedVersion
Issue Date: 2019
Appears in Collections:Naturwissenschaftliche Fakultät

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pos. country downloads
total perc.
1 image of flag of Germany Germany 65 73.03%
2 image of flag of United States United States 9 10.11%
3 image of flag of France France 6 6.74%
4 image of flag of Kenya Kenya 2 2.25%
5 image of flag of Vietnam Vietnam 1 1.12%
6 image of flag of Norway Norway 1 1.12%
7 image of flag of Netherlands Netherlands 1 1.12%
8 image of flag of Israel Israel 1 1.12%
9 image of flag of China China 1 1.12%
10 image of flag of Australia Australia 1 1.12%
    other countries 1 1.12%

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