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TT: Fachverband Tiefe Temperaturen
TT 1: Tutorial: Thermoelectricity – Fundamental Aspects, Materials, Applications (joint session TT/TUT/MA)
TT 1.3: Tutorium
Sonntag, 17. März 2024, 17:30–18:10, H 1058
Novel thermoelectric materials: synthesis, characterization and application — •Wenjie Xie — Institute of Materials Science, Technical University of Darmstadt, Darmstadt, Germany — Fraunhofer IWKS, Alzenau, Germany
Thermoelectricity offers a direct and highly efficient approach for converting heat into electricity, relying on two key factors: Carnot efficiency and the materials-dependent property, ZT. Over the past two decades, significant progress has been made in pursuing high ZT thermoelectric materials, culminating in a bulk ZT surpassing 3. In this presentation, we offer a comprehensive review of the development of novel thermoelectric materials, categorized according to their application temperature ranges: low/room, medium, and high temperatures.
Within each temperature range, we will focus on the synthesis and characterization of one or two exemplary materials. For instance, the discussion will delve into materials such as Bi2Te3 for room temperature applications, SnSe/PbTe for medium temperature regimes, and the utilization of half-Heusler and oxide materials for high-temperature scenarios. Furthermore, the sustainable aspects of thermoelectric material synthesis will be explored.
Last, we will discuss the practical application of thermoelectric materials, examining their usage in real-world scenarios. The discussion will mainly focus on Bi2Te3, half-Heusler, and oxides, providing a comprehensive overview of the current landscape and future potential in the realm of thermoelectric cooling and power generation.
Keywords: Novel thermoelectric materials; synthesis; characterization; application