Influence of La3+, Sm3+and Dy3+ dopants on ceria solid electrolytes for IT–SOFCs

Venkataramana, Kasarapu; Madhuri, Chittimadula; Madhusudan, Ch.; Bhogi, Ashok; Srinivas, B.; Reddy, C. Vishnuvardhan

doi:10.1016/j.mssp.2022.106495

Cited by 13 publications

(3 citation statements)

References 45 publications

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“…This small shift is indicative of the decrease in the lattice parameter(Table 1). The substitution larger size La 3+ (ionic radius 1.03Å) by smaller of Sm 3+ (ionic radius 0.96Å) is caused to decrease the lattice parameter [10,11,12] . To assess the sintering property of LSMAO powders, the sintered density of samples sintered at 950 ℃ for 5 h was measured.…”

Section: Resultsmentioning

confidence: 99%

“…To assess the sintering property of LSMAO powders, the sintered density of samples sintered at 950 ℃ for 5 h was measured. The relative densities of the sintered LSMAO samples, calculated using equation [10,11,12] :…”

Section: Resultsmentioning

confidence: 99%

“…where m  is the density measured by Archimedes method and th  is the theoretical density, which is calculated using [10,11,12] :…”

Section: Resultsmentioning

confidence: 99%

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Preparation and characterization of La₂-xSmxMo_1.8Al_0.2O_8.7 as electrolyte for solid oxide fuel cells

Tian

Shao

Chen

et al. 2022

J. Phys.: Conf. Ser.

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Solid oxide fuel cells (SOFCs) have been regarded as promising eco-friendly power sources in recent years owing to their high energy conversion efficiency and fuel flexibility. La2Mo2O9-based ceramics draw researchers’ attention due to their good performance as electrolyte materials for SOFCs. In this study, the Sm and Al co-doped La2Mo2O9, La2-xSmxMo1.8Al0.2O8.7 (x=0.1,0.2,0.3 and 04, LSMAO), are successfully synthesized by the sol-gel method as electrolyte materials for SOFCs. The phase evolution, sintering, the microstructural and electrochemical performance of LSMAO were observed by TG-DSC, XRD, SEM, and impedance analyses, respectively. The results show that the highly phase-pure cubic LSMAO nanopowders can be obtained after calcining at 600 °C for 2 h. The as-synthesized LSMAO powders exhibited a better sintering activity. All these samples were found to have a relative density above 94.5% after sintering at 950 °C for 5 h. The electrical performance study shows that higher doping concentrations of Sm caused a decrease in ionic conductivity and an increase in activation energy. La1.9Sm0.1Mo1.8Al0.2O8.7 exhibited the highest oxide ionic conductivity (σ800 °C=0.033 S/cm) and lowest electrical activation energy (Ea=0.85 eV). This shows that LSMAO could be used as a potential electrolyte for intermediate temperature SOFCs (IT-SOFCs).

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Preparation and characterization of La₂-xSmxMo_1.8Al_0.2O_8.7 as electrolyte for solid oxide fuel cells

Tian

Shao

Chen

et al. 2022

J. Phys.: Conf. Ser.

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Structural and electrical studies of Nd and Gd co-doped zirconia electrolytes for IT-SOFC applications

Swamy,

Venkataramana,

Madhuri

et al. 2024

Ionics

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Improving the electrical properties of Er-doped CeO2: effect of sintering aids CaO, MgO, and TiO2 on conductivity

Puente-Martínez

Díaz-Guillén

González-García

et al. 2023

J. Korean Ceram. Soc.

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Influence of La3+, Sm3+and Dy3+ dopants on ceria solid electrolytes for IT–SOFCs

Cited by 13 publications

References 45 publications

Preparation and characterization of La₂-xSmxMo_1.8Al_0.2O_8.7 as electrolyte for solid oxide fuel cells

Preparation and characterization of La₂-xSmxMo_1.8Al_0.2O_8.7 as electrolyte for solid oxide fuel cells

Structural and electrical studies of Nd and Gd co-doped zirconia electrolytes for IT-SOFC applications

Improving the electrical properties of Er-doped CeO2: effect of sintering aids CaO, MgO, and TiO2 on conductivity

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Influence of La3+, Sm3+and Dy3+ dopants on ceria solid electrolytes for IT–SOFCs

Cited by 13 publications

References 45 publications

Preparation and characterization of La2-xSmxMo1.8Al0.2O8.7 as electrolyte for solid oxide fuel cells

Preparation and characterization of La2-xSmxMo1.8Al0.2O8.7 as electrolyte for solid oxide fuel cells

Structural and electrical studies of Nd and Gd co-doped zirconia electrolytes for IT-SOFC applications

Improving the electrical properties of Er-doped CeO2: effect of sintering aids CaO, MgO, and TiO2 on conductivity

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Product

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Preparation and characterization of La₂-xSmxMo_1.8Al_0.2O_8.7 as electrolyte for solid oxide fuel cells

Preparation and characterization of La₂-xSmxMo_1.8Al_0.2O_8.7 as electrolyte for solid oxide fuel cells