000150387 001__ 150387
000150387 005__ 20251219150007.0
000150387 0247_ $$2doi$$a10.1016/j.jallcom.2025.178628
000150387 0248_ $$2sideral$$a142554
000150387 037__ $$aART-2025-142554
000150387 041__ $$aeng
000150387 100__ $$aAmirkhizi, P.
000150387 245__ $$aFabrication and testing of ceramic thermoelectric multi-leg module for high-temperature energy conversion
000150387 260__ $$c2025
000150387 5060_ $$aAccess copy available to the general public$$fUnrestricted
000150387 5203_ $$aThis study investigates the fabrication and performance of ceramic-based thermoelectric modules for high-temperature energy conversion, based on Ca2.93Sr0.07Co4O9 and Ca0.91Y0.03La0.03Yb0.03MnO3 p- and n-type materials. The p-type materials were prepared through attrition milling and classical sintering, while ball milling and hot uniaxial pressing were used for the n-type legs. The power factor reached 0.62 mW/(K2m) for the p-type and 0.33 mW/(K2m) for the n-type materials at 800 °C, being comparable to some of the best-reported values in literature. The lower thermal conductivity of n-type material (1.24 W/K/m) compared to the p-type material (1.56 W/K/m) resulted in similar ZT values for n-type (0.29) and p-type (0.43). The thermal expansion behaviour of the materials was also evaluated, demonstrating good thermal compatibility between the p- and n-type legs. The module's performance was tested at hot-side temperatures up to 900 °C, yielding a power density of 34 W/m2. Moreover, the module demonstrated an energy conversion efficiency of 0.8 % (actual) and 6 % (theoretical), thereby underscoring the practical potential of these materials. Additionally, the module exhibited excellent long-term thermal stability, maintaining its performance after 2000 h of exposure at 900 °C and after undergoing 100 thermal cycles, demonstrating its suitability for high-temperature energy recovery applications.
000150387 536__ $$9info:eu-repo/grantAgreement/ES/AEI/CEX2023-001286-S$$9info:eu-repo/grantAgreement/ES/DGA/T54-23R
000150387 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttps://creativecommons.org/licenses/by/4.0/deed.es
000150387 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000150387 700__ $$aHedayati, M.
000150387 700__ $$0(orcid)0000-0002-0794-3998$$aMadre, M.A.$$uUniversidad de Zaragoza
000150387 700__ $$aDura, O.J.
000150387 700__ $$0(orcid)0000-0003-3995-5763$$aTorres, M.A.$$uUniversidad de Zaragoza
000150387 700__ $$0(orcid)0000-0001-7056-0546$$aSotelo, A.$$uUniversidad de Zaragoza
000150387 700__ $$aKovalevsky, A.V.
000150387 700__ $$aRasekh, Sh.
000150387 7102_ $$15002$$2305$$aUniversidad de Zaragoza$$bDpto. Ingeniería Diseño Fabri.$$cÁrea Expresión Gráfica en Ing.
000150387 7102_ $$15001$$2065$$aUniversidad de Zaragoza$$bDpto. Ciencia Tecnol.Mater.Fl.$$cÁrea Cienc.Mater. Ingen.Metal.
000150387 773__ $$g1013 (2025), 178628 [9 pp.]$$pJ. alloys compd.$$tJOURNAL OF ALLOYS AND COMPOUNDS$$x0925-8388
000150387 8564_ $$s5281879$$uhttps://zaguan.unizar.es/record/150387/files/texto_completo.pdf$$yVersión publicada
000150387 8564_ $$s2570757$$uhttps://zaguan.unizar.es/record/150387/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000150387 909CO $$ooai:zaguan.unizar.es:150387$$particulos$$pdriver
000150387 951__ $$a2025-12-19-14:58:07
000150387 980__ $$aARTICLE