Synthesis and electrical properties of strontium-doped lanthanum ferrite with perovskite-type structure

Paiva, José Antônio Euzébio; Daza, Paola Cristina Cajas; Rodrigues, Fernanda Amaral; Ortiz-Mosquera, Jairo F.; Silva, Cosme Roberto Moreira; Montero-Muñoz, M.; Meneses, Rodrigo Arbey Muñoz

doi:10.1016/j.ceramint.2020.04.212

Cited by 8 publications

(2 citation statements)

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“…19 Paiva et al proved that La 0.6 Sr 0.4 FeO 3− δ had a lower E a of electrical conductivity than La 0.8 Sr 0.2 FeO 3− δ . 20 However, (La,Sr)FeO 3 oxides demonstrate awful redox stability due to phase decomposition and/or transformation in a reducing atmosphere. To enhance the redox stability of (La,Sr)FeO 3 oxides, many researchers focused on doping a less reducible cation such as Sc, Ti, Zr, W, Mo, Ru and Nb into the B site.…”

Section: Introductionmentioning

confidence: 99%

Tantalum doped La_0.6Sr_0.4FeO_3−δ electrodes for symmetrical proton conducting solid oxide fuel cells

2023

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Section: Introductionmentioning

confidence: 99%

Tantalum doped La_0.6Sr_0.4FeO_3−δ electrodes for symmetrical proton conducting solid oxide fuel cells

2023

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“…However, its performance is still inadequate compared to the requirements of cathode materials for IT-SOFCs. Consequently, several approaches have been proposed, to enhance the performance of LSF electrode materials for IT-SOFCs, such as developing composite cathodes, doping other metal ions, and surface modification [21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Enhanced Performance of La0.8Sr0.2FeO3-δ-Gd0.2Ce0.8O2-δ Cathode for Solid Oxide Fuel Cells by Surface Modification with BaCO3 Nanoparticles

et al. 2022

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Recently, Fe-based perovskite oxides, such as Ln1-xSrxFeO3-δ (Ln = La, Pr, Nd, Sm, Eu) have been proposed as potential alternative electrode materials for solid oxide fuel cells (SOFCs), due to their good phase stability, electrocatalytic activity, and low cost. This work presents the catalytic effect of BaCO3 nanoparticles modified on a cobalt-free La0.8Sr0.2FeO3-δ-Gd0.2Ce0.8O2-δ (LSF-GDC) composite cathode at an intermediate-temperature (IT)-SOFC. An electrochemical conductivity relaxation investigation (ECR) shows that the Kchem value of the modified LSF-GDC improves up to a factor of 17.47, demonstrating that the oxygen reduction process is effectively enhanced after surface impregnation by BaCO3. The area-specific resistance (ASR) of the LSF-GDC cathode, modified with 9.12 wt.% BaCO3, is 0.1 Ω.cm2 at 750 °C, which is about 2.2 times lower than that of the bare cathode (0.22 Ω.cm2). As a result, the anode-supported single cells, with the modified LSF-GDC cathode, deliver a high peak power density of 993 mW/cm2 at 750 °C, about 39.5% higher than that of the bare cell (712 mW/cm2). The single cells based on the modified cathode also displayed good performance stability for about 100 h at 700 °C. This study demonstrates the effectiveness of BaCO3 nanoparticles for improving the performance of IT-SOFC cathode materials.

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Oxygen exchange kinetics on La0.6Sr0.4FeO3−δ

Kovalev,

Guskov,

Gongola

et al. 2024

Ceramics International

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Synthesis and electrical properties of strontium-doped lanthanum ferrite with perovskite-type structure

Cited by 8 publications

References 19 publications

Tantalum doped La_0.6Sr_0.4FeO_3−δ electrodes for symmetrical proton conducting solid oxide fuel cells

Tantalum doped La_0.6Sr_0.4FeO_3−δ electrodes for symmetrical proton conducting solid oxide fuel cells

Enhanced Performance of La0.8Sr0.2FeO3-δ-Gd0.2Ce0.8O2-δ Cathode for Solid Oxide Fuel Cells by Surface Modification with BaCO3 Nanoparticles

Oxygen exchange kinetics on La0.6Sr0.4FeO3−δ

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Synthesis and electrical properties of strontium-doped lanthanum ferrite with perovskite-type structure

Cited by 8 publications

References 19 publications

Tantalum doped La0.6Sr0.4FeO3−δ electrodes for symmetrical proton conducting solid oxide fuel cells

Tantalum doped La0.6Sr0.4FeO3−δ electrodes for symmetrical proton conducting solid oxide fuel cells

Enhanced Performance of La0.8Sr0.2FeO3-δ-Gd0.2Ce0.8O2-δ Cathode for Solid Oxide Fuel Cells by Surface Modification with BaCO3 Nanoparticles

Oxygen exchange kinetics on La0.6Sr0.4FeO3−δ

Contact Info

Product

Resources

About

Tantalum doped La_0.6Sr_0.4FeO_3−δ electrodes for symmetrical proton conducting solid oxide fuel cells

Tantalum doped La_0.6Sr_0.4FeO_3−δ electrodes for symmetrical proton conducting solid oxide fuel cells