High-temperature transport in perovskite-type Ca0.25Sr0.75Fe0.75Mo0.25O3 − δ

Merkulov, O.V.; Markov, A.A.; Леонидов, И. А.; Патракеев, М.В.

doi:10.1007/s10008-019-04412-4

Cited by 3 publications

(1 citation statement)

References 32 publications

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“…The total conductivity of ferrites in oxidizing and reducing atmospheres is determined by predominant electron hole-and electron-transportation, respectively; these charge carriers are found to have a localized nature [41][42][43][44]…”

Section: Electrical Propertiesmentioning

confidence: 99%

Doped (Nd,Ba)FeO3 oxides as potential electrodes for symmetrically designed protonic ceramic electrochemical cells

Tarutina

Lyagaeva

Фарленков

et al. 2020

J Solid State Electrochem

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The design of new electrode materials with high redox stability has great potential for the fabrication of solid oxide fuel and electrolysis cells having a symmetrical configuration; such a configuration is particularly promising in terms of economic and technological factors due to involving a reduced number of functional materials and technological steps. Under the framework of the present study, we developed new Nd 1-x Ba x Fe 0.9 M 0.1 O 3-δ materials (where M = Cu or Ni, x = 0.4 or 0.6), characterizing their functional properties (oxygen non-stoichiometry, thermomechanical and electrical properties) under both oxidizing and reducing conditions, as well as demonstrating the principal capability of their application as symmetrical electrodes in proton-conducting electrochemical cells. The obtained results demonstrate the desirability of a low barium content due to decreased thermal expansion coefficients and chemical strain contribution and Cu-doping due to the formation of an electrochemically active scaffold having nano-sized sediments. The Nd 0.6 Ba 0.4 Fe 0.9 Cu 0.1 O 3-δ electrodes fabricated onto the BaCe 0.5 Zr 0.3 Y 0.1 Yb 0.1 O 3-δ proton-conducting electrolytes exhibit polarization resistances of 1.1 and 15.1 Ω cm 2 at 600°C in wet air and wet hydrogen measuring atmospheres, respectively. These reported results are among the first concerning the effective operation of symmetrical electrodes in systems with proton-conducting electrolytes.

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Section: Electrical Propertiesmentioning

confidence: 99%

Doped (Nd,Ba)FeO3 oxides as potential electrodes for symmetrically designed protonic ceramic electrochemical cells

Tarutina

Lyagaeva

Фарленков

et al. 2020

J Solid State Electrochem

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Increase in the density of Sr2Fe1.5Mo0.5O6-δ membranes through an excess of iron oxide: The effect of iron oxide on transport and kinetic parameters

Поротникова

Ananyev

Осинкин

et al. 2022

Surfaces and Interfaces

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Electrochemical Performances of New Pr‐Doped Robust Cobalt‐Free Perovskite Sr₂Fe_1.5Mo_0.5O_6-δ as Electrode for Symmetrical Solid Oxide Fuel Cells

Osinkin

2024

International Journal of Energy Research

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Solid oxide electrochemical devices, such as fuel cells and electrolyzers, are the subject of research due to their wide range of applications. Electrochemical devices with symmetric, that is, chemically identical electrodes, have been actively investigated in recent years. This design of cells can significantly reduce the time and cost of fabrication and improve start‐up time by eliminating the fuel electrode reduction step. A serious challenge in the development of symmetrical cells is to find electrode materials that are equally effective in both air and fuel (hydrogen, methane, carbon monoxide, etc.) atmospheres. One such material is Sr2Fe1.5Mo0.5O6-δ (SFM). SFM exhibits satisfactory electrical conductivity and electrochemical activity, high stability in oxidizing and reducing atmospheres, and under redox cycling of a gas environment. This paper presents, for the first time, the results of SFM studies in which a fraction of the strontium cations is replaced by praseodymium. The praseodymium cation is mainly interesting because it has two oxidation states, +3 and +4, which can positively influence the transport properties of SFM, such as electrical conductivity and electrochemical activity in various gas mixtures.

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High-temperature transport in perovskite-type Ca0.25Sr0.75Fe0.75Mo0.25O3 − δ

Cited by 3 publications

References 32 publications

Doped (Nd,Ba)FeO3 oxides as potential electrodes for symmetrically designed protonic ceramic electrochemical cells

Doped (Nd,Ba)FeO3 oxides as potential electrodes for symmetrically designed protonic ceramic electrochemical cells

Increase in the density of Sr2Fe1.5Mo0.5O6-δ membranes through an excess of iron oxide: The effect of iron oxide on transport and kinetic parameters

Electrochemical Performances of New Pr‐Doped Robust Cobalt‐Free Perovskite Sr₂Fe_1.5Mo_0.5O_6-δ as Electrode for Symmetrical Solid Oxide Fuel Cells

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High-temperature transport in perovskite-type Ca0.25Sr0.75Fe0.75Mo0.25O3 − δ

Cited by 3 publications

References 32 publications

Doped (Nd,Ba)FeO3 oxides as potential electrodes for symmetrically designed protonic ceramic electrochemical cells

Doped (Nd,Ba)FeO3 oxides as potential electrodes for symmetrically designed protonic ceramic electrochemical cells

Increase in the density of Sr2Fe1.5Mo0.5O6-δ membranes through an excess of iron oxide: The effect of iron oxide on transport and kinetic parameters

Electrochemical Performances of New Pr‐Doped Robust Cobalt‐Free Perovskite Sr2Fe1.5Mo0.5O6-δ as Electrode for Symmetrical Solid Oxide Fuel Cells

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Electrochemical Performances of New Pr‐Doped Robust Cobalt‐Free Perovskite Sr₂Fe_1.5Mo_0.5O_6-δ as Electrode for Symmetrical Solid Oxide Fuel Cells