Oxygen ionic transport in SrFe1−yAlyO3−δ and Sr1−xCaxFe0.5Al0.5O3−δ ceramics

Shaula, A.L.; Хартон, В.В.; Vyshatko, N. P.; Tsipis, E.V.; Патракеев, М.В.; Marques, F.M.B.; Frade, J.R.

doi:10.1016/j.jeurceramsoc.2004.03.011

Cited by 64 publications

(32 citation statements)

References 24 publications

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“…Among the several structures of types exhibited by ABO 3 oxides the perovskite structure is probably the most well known and widely investigated. Perovskites SrMO 3 attracts much attention from physicists and material scientists because of the unusual combination of their magnetic, electronic and transport properties [1,2].…”

Section: Introductionmentioning

confidence: 99%

First Principle Study of Cubic SrMO<sub>3</sub> Perovskites (M = Ti, Zr, Mo, Rh, Ru)

Daga¹,

Sharma²,

Sharma³

2011

JMP

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Lattice parameter and corresponding total free energy have been computed for cubic SrMO 3 perovskites (M = Ti, Zr, Mo, Rh, Ru) using the first principle approach within Density functional theory. The results have been calculated using local density approximation (LDA) method. It is found that the calculated lattice parameter for all transition metal oxides are in good agreement with the available experimental data. The total free energy corresponding to this lattice constant has been calculated along with different components of the total free energy. All these calculations have been carried out using ABINIT computer code.

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Section: Introductionmentioning

confidence: 99%

First Principle Study of Cubic SrMO<sub>3</sub> Perovskites (M = Ti, Zr, Mo, Rh, Ru)

Daga¹,

Sharma²,

Sharma³

2011

JMP

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“…31 Incorporation of Al at the B-site of the perovskite phase has been previously reported to increase the thermochemical stability of the membranes, also under reducing atmospheres, 32,33 correlating with reduced chemical and thermal expansion coefficients. 34,35 In this paper, we report enhanced oxygen permeability and structural improvement of NSF64-CN91 by partial substitution of Fe for Al at the B-site of the perovskite phase. Furthermore, the effect of higher Sr content and increased Nd doping of the uorite phase on the CO 2 stability and oxygen permeability of the newly developed membranes 40 wt% Nd 0.6 Sr 0.…”

Section: -26mentioning

confidence: 78%

Novel CO₂-tolerant Al-containing membranes for high-temperature oxygen separation

2015

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(NSAF5528-CN82) were successfully synthesized via a one-pot sol-gel method. The oxygen permeation performance and the structural properties of the membranes could be simultaneously improved owing to Al doping of the perovskite phase. The newly developed dense ceramic membranes (0.6 mm thick) displayed long-term stable oxygen permeation fluxes of 0.31 and 0.51 cm 3 min À1 cm À2 under an air/CO 2 oxygen partial pressure gradient at 950 C for NSAF6428-CN91 and NSAF5528-CN82, respectively. The NSAF6428-CN91 showed a stable oxygen flux of 0.15 cm 3 min À1 cm À2 at 900 C for 100 h, without any deterioration of the microstructure under pure CO 2 sweeping.

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“…At the same time, compositional changes in the main perovskite phase may have a positive effect. Recently, Kharton and coworkers reported a series of alumina-doped SrFeO 3Àd -based perovskite membranes with an improved stability [123][124][125][126][127][128][129][130]. While the solid solution formation range in SrFe 1Ày Al y O 3Àd system corresponds to y ¼ 0-0.35, overstoichiometric additions of alumina lead to the segregation of insulating SrAl 2 O 4 phase, but simultaneously increase sintering and, in some cases, enhance oxygen permeation (Figure 11.7) [124].…”

Section: Perovskite Membranes With Second Phase or Impuritiesmentioning

confidence: 99%

Interfacial Phenomena in Mixed Conducting Membranes: Surface Oxygen Exchange‐ and Microstructure‐Related Factors

Zhu

Yang

2011

Solid State Electrochemistry II

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The transport behavior of ions, such as O 2À anions or protons, driven by chemical potential gradient across dense mixed conducting membranes is governed by many factors. In this chapter, the effects of surface exchange and ceramic microstructure are addressed. The surface-related aspects are discussed involving selected theoretical approaches and modeling. Relevant experimental methods are briefly described. The influence of microstructure on the gas permeation processes is analyzed for several types of mixed conducting membranes. The relationships between the membranes stability and their microstructure and surface exchange kinetics are considered on the basis of existing experimental data. IntroductionSolid-state nonmetallic conducting materials have been extensively developed and applied for various solid electrochemical devices during the last century. A large number of works reveal the great interest of researchers in energy storage and conversion devices, sensors, gas separation membranes, and other electrochemical applications of solid-state conducting materials [1-3]. The charge carriers may include electrons (or holes), protons, nonmetallic anions (such as O 2À , Cl À , etc.), and metal cations (such as Li þ , Na þ , etc.). The major groups of ion-conducting materials are discussed in the first volume of this handbook. Mixed conductors are the materials that have more than one type of mobile charge carriers (see Chapter 3 of the first volume). The high-temperature electrochemical applications of mixed conductors are, in particular, electrodes for solid oxide fuel cells (SOFCs) and other electrochemical devices, and ceramic membranes for oxygen, hydrogen, and carbon dioxide separation. For these types of applications, the solid should have high values of both the ionic/protonic and electronic conductivities. The electrode applications have been reviewed by many researchers [4][5][6][7], including Chapter 12 of the first volume and Chapters 5, 6 and 9 of this book, and are thus outside the scope of this chapter focused on selected aspects of mixed conducting membranes for gas separation.Solid State Electrochemistry II: Electrodes, Interfaces and Ceramic Membranes. Edited by Vladislav V. Kharton.

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Oxygen ionic transport in SrFe1−yAlyO3−δ and Sr1−xCaxFe0.5Al0.5O3−δ ceramics

Cited by 64 publications

References 24 publications

First Principle Study of Cubic SrMO<sub>3</sub> Perovskites (M = Ti, Zr, Mo, Rh, Ru)

First Principle Study of Cubic SrMO<sub>3</sub> Perovskites (M = Ti, Zr, Mo, Rh, Ru)

Novel CO₂-tolerant Al-containing membranes for high-temperature oxygen separation

Interfacial Phenomena in Mixed Conducting Membranes: Surface Oxygen Exchange‐ and Microstructure‐Related Factors

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Oxygen ionic transport in SrFe1−yAlyO3−δ and Sr1−xCaxFe0.5Al0.5O3−δ ceramics

Cited by 64 publications

References 24 publications

First Principle Study of Cubic SrMO&lt;sub&gt;3&lt;/sub&gt; Perovskites (M = Ti, Zr, Mo, Rh, Ru)

First Principle Study of Cubic SrMO&lt;sub&gt;3&lt;/sub&gt; Perovskites (M = Ti, Zr, Mo, Rh, Ru)

Novel CO2-tolerant Al-containing membranes for high-temperature oxygen separation

Interfacial Phenomena in Mixed Conducting Membranes: Surface Oxygen Exchange‐ and Microstructure‐Related Factors

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Product

Resources

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First Principle Study of Cubic SrMO<sub>3</sub> Perovskites (M = Ti, Zr, Mo, Rh, Ru)

First Principle Study of Cubic SrMO<sub>3</sub> Perovskites (M = Ti, Zr, Mo, Rh, Ru)

Novel CO₂-tolerant Al-containing membranes for high-temperature oxygen separation