Journal article

Publication year: 2023

Journal: Materials Today Energy

Volume number: 38

ISSN: 2468-6069

DOI Link: https://doi.org/10.1016/j.mtener.2023.101420

Publisher: Elsevier

Abstract: 
a-MgAgSb is a promising thermoelectric material with an average figure of merit above unity between room temperature and 573 K, making it attractive for low temperature waste heat recovery or tem-perature regulation applications. We demonstrate here the first a-MgAgSb/Mg2(Si,Sn)-based thermo-electric module, where Mg2(Si,Sn) was chosen as n-type counterpart due to its excellent thermoelectric properties, low weight, abundant, and eco-friendly constituents. By using this new material combination, a maximum conversion efficiency of 6.4% and maximum power of 0.68 W were achieved for a tem-perature difference of 275 K, superior to commercially available (Bi,Te,Sb)-based thermoelectric modules. The Constant Property Model was used to check the validity of the measurement results and to identify room for further improvement. The characterization of the prototype shows a relatively good match between measurement and calculation for most of the thermoelectric module performance parameters; however, the measured internal electrical resistance is around 10% higher than the predicted values, indicating opportunities for further enhancement.(c) 2023 Elsevier Ltd. All rights reserved.

Harvard Citation style: Wieder, A., Camut, J., Duparchy, A., Deshpande, R., Cowley, A., Mueller, E., et al. (2023) High-performance tellurium-free thermoelectric module for moderate temperatures using α-MgAgSb/Mg₂(Si,Sn), MATERIALS TODAY ENERGY, 38, Article 101420. https://doi.org/10.1016/j.mtener.2023.101420

APA Citation style: Wieder, A., Camut, J., Duparchy, A., Deshpande, R., Cowley, A., Mueller, E., & de Boor, J. (2023). High-performance tellurium-free thermoelectric module for moderate temperatures using α-MgAgSb/Mg₂(Si,Sn). MATERIALS TODAY ENERGY. 38, Article 101420. https://doi.org/10.1016/j.mtener.2023.101420