Journal of Alloys and Compounds, volume 851, pages 156882
Microwave irradiation synthesis to obtain La0.7-xPrxCa0.3MnO3 perovskites: Electrical and electrochemical performance
A C Ferrel Álvarez
1
,
Miguel A. Domínguez-Crespo
2
,
Hongbo Cong
3
,
Aide M. Torres-Huerta
2
,
Diana Palma Ramírez
4
,
John T. Irvine
5
1
Instituto Politécnico Nacional, CICATA- Altamira, Grupo CIAMS, Km 14.5 Carretera Tampico- Puerto Industrial Altamira, C.P. 89600, Altamira, Mexico
|
2
Instituto Politécnico Nacional, UPIIH, Km 1+500, Carretera Pachuca- Actopan, C.P. 42162, San Agustín Tlaxcala, Hgo, Mexico
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3
Department of Chemical, Biomolecular and Corrosion Engineering, The University of Akron, Akron, OH, 44325-3906, USA
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4
Instituto Politécnico Nacional, Centro Mexicano para La Producción Más Limpia (CMPL) Av. Acueducto S/N, La Laguna Ticomán, C.P. 07340, Cd. México, Mexico
|
Publication type: Journal Article
Publication date: 2021-01-01
Journal:
Journal of Alloys and Compounds
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor: 6.2
ISSN: 09258388
Materials Chemistry
Metals and Alloys
Mechanical Engineering
Mechanics of Materials
Abstract
La0.7-xPrxCa0.3MnO3 (LPCM) perovskites previously synthesized by the microwave-assisted method at 4 min and with different stoichiometry (x = 0.35, 0.52 and 0.63) were evaluated through thermogravimetric analysis (TGA), electrical conductivity, thermal expansion coefficient (TEC), scanning electron microscopy (SEM), Brunauer- Emmet- Teller (BET) analysis and electrochemical impedance spectroscopy (EIS) using yttria stabilized zirconia (YSZ) as an electrolyte. The results are discussed in terms of the potential as cathode material to be applied in solid oxide fuel cells (SOFCs) applications at temperatures from 600 to 800 °C. Results derived from TGA showed that Pr promotes the uncoupling oxygen and oxygen vacancies favoring the fuel combusting. Also, TEC analysis revealed adequate stability between the YSZ electrolyte and the La0.7-xPrxCa0.3MnO3 to avoid cracking or failing, especially with high amount of Pr. The transition in morphology from irregular to regular shapes improves the BET and Barret- Joyner- Halenda (BJH) surfaces and promotes the triple phase boundary (TPB) connectivity. The electrical conductivity correlated to the availability in oxygen vacancies showed maximum conductivities in the order of 10−2 S cm−1. Activation energy (Ea) was found to be reduced with a minimum quantity of Pr (0.071 eV). EIS results indicate that the oxygen vacancies in the LPCM/YSZ system were better promoted with the highest amount of Pr = 0.63 (η = 0.9 V, 800 °C and 0.06 V of amplitude) in comparison with the minimum, Pr = 0.35 (η = 1.2 V, 800 °C and 0.06 V of amplitude).
Top-30
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1 publication, 14.29%
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Citations by publishers
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Elsevier
2 publications, 28.57%
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1 publication, 14.29%
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1 publication, 14.29%
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1 publication, 14.29%
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Springer Nature
1 publication, 14.29%
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- We do not take into account publications without a DOI.
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- Statistics recalculated weekly.
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Ferrel Álvarez A. C. et al. Microwave irradiation synthesis to obtain La0.7-xPrxCa0.3MnO3 perovskites: Electrical and electrochemical performance // Journal of Alloys and Compounds. 2021. Vol. 851. p. 156882.
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Ferrel Álvarez A. C., Domínguez-Crespo M. A., Cong H., Torres-Huerta A. M., Palma Ramírez D., Irvine J. T. Microwave irradiation synthesis to obtain La0.7-xPrxCa0.3MnO3 perovskites: Electrical and electrochemical performance // Journal of Alloys and Compounds. 2021. Vol. 851. p. 156882.
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TY - JOUR
DO - 10.1016/j.jallcom.2020.156882
UR - https://doi.org/10.1016/j.jallcom.2020.156882
TI - Microwave irradiation synthesis to obtain La0.7-xPrxCa0.3MnO3 perovskites: Electrical and electrochemical performance
T2 - Journal of Alloys and Compounds
AU - Ferrel Álvarez, A C
AU - Domínguez-Crespo, Miguel A.
AU - Cong, Hongbo
AU - Torres-Huerta, Aide M.
AU - Palma Ramírez, Diana
AU - Irvine, John T.
PY - 2021
DA - 2021/01/01 00:00:00
PB - Elsevier
SP - 156882
VL - 851
SN - 0925-8388
ER -
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@article{2021_Ferrel Álvarez,
author = {A C Ferrel Álvarez and Miguel A. Domínguez-Crespo and Hongbo Cong and Aide M. Torres-Huerta and Diana Palma Ramírez and John T. Irvine},
title = {Microwave irradiation synthesis to obtain La0.7-xPrxCa0.3MnO3 perovskites: Electrical and electrochemical performance},
journal = {Journal of Alloys and Compounds},
year = {2021},
volume = {851},
publisher = {Elsevier},
month = {jan},
url = {https://doi.org/10.1016/j.jallcom.2020.156882},
pages = {156882},
doi = {10.1016/j.jallcom.2020.156882}
}