Details
| Original language | English |
|---|---|
| Article number | 1058 |
| Pages (from-to) | 1058 |
| Number of pages | 32 |
| Journal | Entropy |
| Volume | 21 |
| Issue number | 11 |
| Publication status | Published - 29 Oct 2019 |
Abstract
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.
Keywords
- Energy harvesting, Energy materials, Thermoelectric materials
ASJC Scopus subject areas
- Physics and Astronomy(all)
- General Physics and Astronomy
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In: Entropy, Vol. 21, No. 11, 1058, 29.10.2019, p. 1058.
Research output: Contribution to journal › Review article › Research › peer review
}
TY - JOUR
T1 - High Power Factor vs. High zT
T2 - A review of Thermoelectric Materials for High-Temperature Application
AU - Wolf, Mario
AU - Hinterding, Richard
AU - Feldhoff, Armin
N1 - Funding Information: This work was funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation)-project number 325156807. The publication of this article was funded by the Open Access fund of Leibniz University Hannover.
PY - 2019/10/29
Y1 - 2019/10/29
N2 - 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.
AB - 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.
KW - Energy harvesting
KW - Energy materials
KW - Thermoelectric materials
UR - http://www.scopus.com/inward/record.url?scp=85075440047&partnerID=8YFLogxK
U2 - 10.3390/e21111058
DO - 10.3390/e21111058
M3 - Review article
AN - SCOPUS:85075440047
VL - 21
SP - 1058
JO - Entropy
JF - Entropy
SN - 1099-4300
IS - 11
M1 - 1058
ER -