Effect of addition of erbium stabilized bismuth oxide on the conductivity of lanthanum doped ceria solid electrolyte for IT-SOFCs

Jaiswal, Nandini; Gupta, B. K.; Kumar, Devendra; Parkash, Om

doi:10.1016/j.jallcom.2014.12.243

Cited by 32 publications

(7 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In fact, the decrease of the operating temperature in SOFC is a very important goal for reducing interfacial reactions between cell components, mechanical and thermal degradation, and thermal expansion mismatch [6]. Ceria doped with aliovalent cation such as rare earth (RE +3 ) has been found to be one of the most promising routes [7]. The oxygen vacancy concentration and the concomitant ion conductivity of ceria can be, in fact, increased significantly by the substitution of lower-valence rare earth RE +3 ion for Ce 4+ .…”

Section: Introductionmentioning

confidence: 99%

Effect of the Precipitating Agent on the Synthesis and Sintering Behavior of 20 mol% Sm-Doped Ceria

Spiridigliozzi

Dell’Agli

Biesuz

et al. 2016

Advances in Materials Science and Engineering

View full text Add to dashboard Cite

Nanocrystalline 20 mol% samaria-doped ceria powders (Ce0.8Sm0.2O1.9) were synthesized by coprecipitation techniques using various precipitating agents in aqueous solution: ammonia, ammonium carbonate, tetramethylammonium hydroxide, and urea. The synthesized powders after calcination at 600°C possess a fluorite structure with nanometric size although they are characterized by a very different morphology and degree of agglomeration. Remarkable differences appear in the sintering behavior, especially because of the presence of hard agglomerates. The precipitating agent has therefore a crucial role in the coprecipitation process, which influences the morphology of the powders and in turn the sintering behavior. The obtained results clearly reveal that ammonium carbonate and urea are the best precipitating agents to obtain final dense products after sintering.

show abstract

Section: Introductionmentioning

confidence: 99%

Effect of the Precipitating Agent on the Synthesis and Sintering Behavior of 20 mol% Sm-Doped Ceria

Spiridigliozzi

Dell’Agli

Biesuz

et al. 2016

Advances in Materials Science and Engineering

View full text Add to dashboard Cite

show abstract

“…The “ R t ” is the total resistance, “ L” is the thickness and “ a ” is the area of the pellet that was formed for the analysis . The results of the total conductivity are presented in Table .…”

Section: Resultsmentioning

confidence: 99%

Effect of Pr on the electrical and chemical properties of cerium oxide prepared by combustion method

Cruz-Pacheco

Cuaspud

Vargas

et al. 2019

Int J Applied Ceramic Tech

View full text Add to dashboard Cite

Nanoparticles of Ce 1−x Pr x O 2 (X: 0.6 and 0.8), were synthesized by the combustion method using citric acid as chelating and fuel agent. The X-ray diffraction patterns and Rietveld refinements confirm that samples shown as a single phase in a cubic fluorite structure, with an increase in the lattice parameter as a function of Pr concentration. The crystallite size domains obtained by the Scherrer formula, confirm values around 10 and 37 nm. The scanning electron microscopy images, show that the solids are composed of dense heterogeneous aggregates. The X-ray photoelectron spectroscopy, reveals that oxides are composed of cerium and praseodymium cations in oxidation states 4+ and 3+ respectively. The TPR-H 2 profiles indicate that cerium and praseodymium cations present in the obtained systems are completely reduced to Ce 3+ and Pr 3+ at temperatures above 790°C. The impedance spectroscopy data at room temperature showed that the conduction processes for the two systems take place at the grain boundaries. The Ce 0.2 Pr 0.8 O 2 system offer lower resistance, due to the high amount of Pr 3+ ions inserted in the structure and the high amount of oxygen vacancies formed in the synthesis process.

show abstract

“…[10][11][12] However, the high working temperature poses several issues, including material deterioration and the need for costly noble-metal electrodes. 13 Solid electrolytes exhibiting high ionic conductivity in the low temperature range (below 600 1C) must be developed.…”

Section: Introductionmentioning

confidence: 99%

The fabrication of a highly conductive ceria-embedded gadolinium-stabilized bismuth oxide nanocomposite solid electrolyte for low-temperature solid oxide fuel cells

Parbin

Rafi-Ud-Din

2022

Mater. Adv.

View full text Add to dashboard Cite

show abstract

Effect of addition of erbium stabilized bismuth oxide on the conductivity of lanthanum doped ceria solid electrolyte for IT-SOFCs

Cited by 32 publications

References 22 publications

Effect of the Precipitating Agent on the Synthesis and Sintering Behavior of 20 mol% Sm-Doped Ceria

Effect of the Precipitating Agent on the Synthesis and Sintering Behavior of 20 mol% Sm-Doped Ceria

Effect of Pr on the electrical and chemical properties of cerium oxide prepared by combustion method

The fabrication of a highly conductive ceria-embedded gadolinium-stabilized bismuth oxide nanocomposite solid electrolyte for low-temperature solid oxide fuel cells

Contact Info

Product

Resources

About