Half-Heusler (TiZrHf)NiSn Unileg Module with High Powder Density

Materials

Sascha Populoh¹  Oliver C. Brunko¹  Krzysztof Gałązka¹  Wenjie Xie¹ 

[1] Solid State Chemistry and Catalysis Laboratory, Empa—Swiss Federal Laboratories for Materials Testing and Research, Ueberlandstrasse 129, Duebendorf CH-8600, Switzerland;

关键词: thermoelectricity;    thermoelectric modules;    half-Heusler compounds;   

DOI  :  10.3390/ma6041326

来源: mdpi

【 摘 要 】

(TiZrHf)NiSn half-Heusler compounds were prepared by arc melting and their thermoelectric properties characterized in the temperature range between 325 K and 857 K, resulting in a Figure of Merit ZT ≈ 0.45. Furthermore, the prepared samples were used to construct a unileg module. This module was characterized in a homemade thermoelectric module measurement stand and yielded 275 mW/cm² and a maximum volumetric power density of 700 mW/cm³. This was reached using normal silver paint as a contacting material; from an improved contacting, much higher power yields are to be expected.

【 授权许可】

CC BY   
© 2013 by the authors; licensee MDPI, Basel, Switzerland.