Effect of A-site stoichiometry on phase stability and electrical conductivity of the perovskite Las(Ni0.59Fe0.41)O3-δ and its compatibility with (La0.85Sr0.15)0.91MnO3-δ and Zr0.85Y0.15O2.925

J. Knudsen; P.B. Friehling; N. Bonanos

doi:10.1016/j.ssi.2005.04.010

Effect of A-site stoichiometry on phase stability and electrical conductivity of the perovskite La_s(Ni₀_.₅₉Fe₀_.₄₁)O₃_-δ and its compatibility with (La₀_.₈₅Sr₀_.₁₅)₀_.₉₁MnO₃_-δ and Zr₀_.₈₅Y₀_.₁₅O₂_.₉₂₅

J. Knudsen, P.B. Friehling, N. Bonanos

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

To investigate the influence of A-site stoichiometry on phase stability and electrical conductivity of the perovskite based series La-S(Ni0.59Fe0.41)O3-delta for cathode current collection in solid oxide fuel cells, X-ray diffraction and DC electrical conductivity studies were performed on samples, prepared by the glycine nitrate combustion method. The chemical compatibility of La-0.99(Ni0.59Fe0.41)O3-delta with the cathode material (La0.85Sr0.15)(0.91)MnO3-delta and the electrolyte Y2O3-doped ZrO2 (8 mol%) was likewise studied by X-ray diffraction and scanning electron microscopy. Small deviations (similar to 1 at.%) in the A-site stoichiometry of the perovskite did not result in significant change to the electrical conductivity. Extensive reaction between La-0.99(Ni0.59Fe0.41)O3-delta and 8 mol% Y2O3 doped ZrO2 after sintering was observed by X-ray diffraction. Reaction between La-0.99(Ni0.59Fe0.41)O3-delta and (La0.85Sr0.15)(0.91)MnO3-delta resulted in a single perovskite material when the compounds were cosintered. The interface between a screen-printed layer of La-0.99(Ni0.59Fe0.41)O3-delta and a layer of Ce0.9Gd0.10O3-delta/(La0.85Sr0.15)(0.91)MnO3-delta composite has been investigated and the extent of the reaction zone determined by energy dispersive X-ray spectroscopy. (c) 2005 Elsevier B.V. All rights reserved.

Original language	English
Journal	Solid State Ionics
Volume	176
Issue number	17-18
Pages (from-to)	1563-1569
ISSN	0167-2738
DOIs	https://doi.org/10.1016/j.ssi.2005.04.010
Publication status	Published - 2005

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@article{ee9065482d084f64a73d705f6337706b,

title = "Effect of A-site stoichiometry on phase stability and electrical conductivity of the perovskite Las(Ni0.59Fe0.41)O3-δ and its compatibility with (La0.85Sr0.15)0.91MnO3-δ and Zr0.85Y0.15O2.925",

abstract = "To investigate the influence of A-site stoichiometry on phase stability and electrical conductivity of the perovskite based series La-S(Ni0.59Fe0.41)O3-delta for cathode current collection in solid oxide fuel cells, X-ray diffraction and DC electrical conductivity studies were performed on samples, prepared by the glycine nitrate combustion method. The chemical compatibility of La-0.99(Ni0.59Fe0.41)O3-delta with the cathode material (La0.85Sr0.15)(0.91)MnO3-delta and the electrolyte Y2O3-doped ZrO2 (8 mol%) was likewise studied by X-ray diffraction and scanning electron microscopy. Small deviations (similar to 1 at.%) in the A-site stoichiometry of the perovskite did not result in significant change to the electrical conductivity. Extensive reaction between La-0.99(Ni0.59Fe0.41)O3-delta and 8 mol% Y2O3 doped ZrO2 after sintering was observed by X-ray diffraction. Reaction between La-0.99(Ni0.59Fe0.41)O3-delta and (La0.85Sr0.15)(0.91)MnO3-delta resulted in a single perovskite material when the compounds were cosintered. The interface between a screen-printed layer of La-0.99(Ni0.59Fe0.41)O3-delta and a layer of Ce0.9Gd0.10O3-delta/(La0.85Sr0.15)(0.91)MnO3-delta composite has been investigated and the extent of the reaction zone determined by energy dispersive X-ray spectroscopy. (c) 2005 Elsevier B.V. All rights reserved. ",

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author = "J. Knudsen and P.B. Friehling and N. Bonanos",

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Effect of A-site stoichiometry on phase stability and electrical conductivity of the perovskite La_s(Ni₀_.₅₉Fe₀_.₄₁)O₃_-δ and its compatibility with (La₀_.₈₅Sr₀_.₁₅)₀_.₉₁MnO₃_-δ and Zr₀_.₈₅Y₀_.₁₅O₂_.₉₂₅. / Knudsen, J.; Friehling, P.B.; Bonanos, N.
In: Solid State Ionics, Vol. 176, No. 17-18, 2005, p. 1563-1569.

Research output: Contribution to journal › Journal article › Research › peer-review

TY - JOUR

T1 - Effect of A-site stoichiometry on phase stability and electrical conductivity of the perovskite Las(Ni0.59Fe0.41)O3-δ and its compatibility with (La0.85Sr0.15)0.91MnO3-δ and Zr0.85Y0.15O2.925

AU - Knudsen, J.

AU - Friehling, P.B.

AU - Bonanos, N.

PY - 2005

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N2 - To investigate the influence of A-site stoichiometry on phase stability and electrical conductivity of the perovskite based series La-S(Ni0.59Fe0.41)O3-delta for cathode current collection in solid oxide fuel cells, X-ray diffraction and DC electrical conductivity studies were performed on samples, prepared by the glycine nitrate combustion method. The chemical compatibility of La-0.99(Ni0.59Fe0.41)O3-delta with the cathode material (La0.85Sr0.15)(0.91)MnO3-delta and the electrolyte Y2O3-doped ZrO2 (8 mol%) was likewise studied by X-ray diffraction and scanning electron microscopy. Small deviations (similar to 1 at.%) in the A-site stoichiometry of the perovskite did not result in significant change to the electrical conductivity. Extensive reaction between La-0.99(Ni0.59Fe0.41)O3-delta and 8 mol% Y2O3 doped ZrO2 after sintering was observed by X-ray diffraction. Reaction between La-0.99(Ni0.59Fe0.41)O3-delta and (La0.85Sr0.15)(0.91)MnO3-delta resulted in a single perovskite material when the compounds were cosintered. The interface between a screen-printed layer of La-0.99(Ni0.59Fe0.41)O3-delta and a layer of Ce0.9Gd0.10O3-delta/(La0.85Sr0.15)(0.91)MnO3-delta composite has been investigated and the extent of the reaction zone determined by energy dispersive X-ray spectroscopy. (c) 2005 Elsevier B.V. All rights reserved.

AB - To investigate the influence of A-site stoichiometry on phase stability and electrical conductivity of the perovskite based series La-S(Ni0.59Fe0.41)O3-delta for cathode current collection in solid oxide fuel cells, X-ray diffraction and DC electrical conductivity studies were performed on samples, prepared by the glycine nitrate combustion method. The chemical compatibility of La-0.99(Ni0.59Fe0.41)O3-delta with the cathode material (La0.85Sr0.15)(0.91)MnO3-delta and the electrolyte Y2O3-doped ZrO2 (8 mol%) was likewise studied by X-ray diffraction and scanning electron microscopy. Small deviations (similar to 1 at.%) in the A-site stoichiometry of the perovskite did not result in significant change to the electrical conductivity. Extensive reaction between La-0.99(Ni0.59Fe0.41)O3-delta and 8 mol% Y2O3 doped ZrO2 after sintering was observed by X-ray diffraction. Reaction between La-0.99(Ni0.59Fe0.41)O3-delta and (La0.85Sr0.15)(0.91)MnO3-delta resulted in a single perovskite material when the compounds were cosintered. The interface between a screen-printed layer of La-0.99(Ni0.59Fe0.41)O3-delta and a layer of Ce0.9Gd0.10O3-delta/(La0.85Sr0.15)(0.91)MnO3-delta composite has been investigated and the extent of the reaction zone determined by energy dispersive X-ray spectroscopy. (c) 2005 Elsevier B.V. All rights reserved.

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U2 - 10.1016/j.ssi.2005.04.010

DO - 10.1016/j.ssi.2005.04.010

M3 - Journal article

SN - 0167-2738

VL - 176

SP - 1563

EP - 1569

JO - Solid State Ionics

JF - Solid State Ionics

IS - 17-18

ER -