TY - JOUR
T1 - Thermoelectric modules built using ceramic legs grown by laser floating zone
AU - Ferreira, N.M.
AU - Lopes, D.
AU - Kovalevsky, A.V.
AU - Costa, F.M.
AU - Sotelo, A.
AU - Madre, M.A.
AU - Rezaniakolaei, Alireza
PY - 2020
Y1 - 2020
N2 - The present work reports the first attempt of thermoelectric module design, based on oxide materials grown through the laser floating zone technique. Two modules with 4-legs thermoelectric were assembled using Bi2Ba2Co2Oy fibres as p-type legs, while Ca0.9La0.1MnO3 and CaMn0.95Nb0.05O3 fibres were used as n-type legs. Structural and electrical characterisation of the individual fibres was performed, and the results compared to the literature. The evolution of open-circuit voltage on heating and cooling up to 723 K, present the expected trends based on the Seebeck coefficient of the individual fibres, suggesting good reliability of the modules during temperature cycling. The power generation performance was evaluated for a temperature difference up to 500 K under different electric loads. The maximum measured power was ~2.2 mW for a module volume of ~39 mm3. Nevertheless, the module here studies possess better performance than those commercially available.
AB - The present work reports the first attempt of thermoelectric module design, based on oxide materials grown through the laser floating zone technique. Two modules with 4-legs thermoelectric were assembled using Bi2Ba2Co2Oy fibres as p-type legs, while Ca0.9La0.1MnO3 and CaMn0.95Nb0.05O3 fibres were used as n-type legs. Structural and electrical characterisation of the individual fibres was performed, and the results compared to the literature. The evolution of open-circuit voltage on heating and cooling up to 723 K, present the expected trends based on the Seebeck coefficient of the individual fibres, suggesting good reliability of the modules during temperature cycling. The power generation performance was evaluated for a temperature difference up to 500 K under different electric loads. The maximum measured power was ~2.2 mW for a module volume of ~39 mm3. Nevertheless, the module here studies possess better performance than those commercially available.
KW - Thermoelectric module
KW - Laser floating zone
KW - Thermoelectric oxide
KW - Thermoelectric performance
KW - n- and p-type thermoelectric materials
UR - http://www.scopus.com/inward/record.url?scp=85087673151&partnerID=8YFLogxK
U2 - 10.1016/j.ceramint.2020.06.213
DO - 10.1016/j.ceramint.2020.06.213
M3 - Journal article
SN - 0272-8842
VL - 46
SP - 24318
EP - 24325
JO - Ceramics International
JF - Ceramics International
IS - 15
ER -