TY - GEN
T1 - EFFECT PARTIAL SUBSTITUTION OF LANTHANUM ON THE THERMAL PROPERTIES OF La0.7-XLnXCa0.3MnO3 (Ln = Pr or Sm) PEROVSKITES
AU - Ramírez-Hernández, Jessica
AU - Torres-Huerta, Aidé M.
AU - Brachetti-Sibaja, Silvia B.
AU - Domínguez-Crespo, Miguel A.
AU - Palma-Ramírez, Diana
AU - de la Cruz, Wencel
AU - Gutiérrez-Galicia, Francisco
N1 - Publisher Copyright:
© 2022 Proceedings of WHEC 2022 - 23rd World Hydrogen Energy Conference: Bridging Continents by H2. All rights reserved.
PY - 2022
Y1 - 2022
N2 - La0.7-xLnxCa0.3MnO3 (Ln = Pr or Sm) perovskites synthesized by Pechini method with different stoichiometries (x = 0.1, 0.3, 0.5 and 0.6) were analyzed in order to evaluate the effect of cationic substitution and final composition on thermal properties; specific heat, thermal conductivity and thermal diffusivity at different temperatures are specifically reported. The results are discussed in terms of the potential use as a cathode material to be applied in solid oxide fuel cells (SOFCs) applications at intermediate temperatures (600 to 800°C). The results showed that thermal conductivity decreases as Pr doping increases; but a different trend is observed with samarium: first, a decrease is observed from x = 0.1 to x = 0.3, and then, from x = 0.3 to x = 0.6, an increase is determined. Also, thermal diffusivity presents a marked behavior when Sm-based perovskites display a high cation substitution (x = 0.6). Thermal expansion coefficient studies are in progress.
AB - La0.7-xLnxCa0.3MnO3 (Ln = Pr or Sm) perovskites synthesized by Pechini method with different stoichiometries (x = 0.1, 0.3, 0.5 and 0.6) were analyzed in order to evaluate the effect of cationic substitution and final composition on thermal properties; specific heat, thermal conductivity and thermal diffusivity at different temperatures are specifically reported. The results are discussed in terms of the potential use as a cathode material to be applied in solid oxide fuel cells (SOFCs) applications at intermediate temperatures (600 to 800°C). The results showed that thermal conductivity decreases as Pr doping increases; but a different trend is observed with samarium: first, a decrease is observed from x = 0.1 to x = 0.3, and then, from x = 0.3 to x = 0.6, an increase is determined. Also, thermal diffusivity presents a marked behavior when Sm-based perovskites display a high cation substitution (x = 0.6). Thermal expansion coefficient studies are in progress.
KW - ABO perovskites
KW - solid oxide fuel cells
KW - thermal conductivity
UR - http://www.scopus.com/inward/record.url?scp=85147193188&partnerID=8YFLogxK
M3 - Contribución a la conferencia
AN - SCOPUS:85147193188
T3 - Proceedings of WHEC 2022 - 23rd World Hydrogen Energy Conference: Bridging Continents by H2
SP - 870
EP - 872
BT - Proceedings of WHEC 2022 - 23rd World Hydrogen Energy Conference
A2 - Dincer, Ibrahim
A2 - Colpan, Can Ozgur
A2 - Ezan, Mehmet Akif
PB - International Association for Hydrogen Energy, IAHE
T2 - 23rd World Hydrogen Energy Conference: Bridging Continents by H2, WHEC 2022
Y2 - 26 June 2022 through 30 June 2022
ER -