A study of Pr0.7Sr0.3Fe1-xNixO3-δ as a cathode material for SOFCs with intermediate operating temperature

S.I. Hashimoto; K. Kammer Hansen; P.H. Larsen; F.W. Poulsen; Mogens Bjerg Mogensen

doi:10.1016/j.ssi.2004.09.010

A study of Pr₀_.₇Sr₀_.₃Fe₁_-_xNi_xO₃_-δ as a cathode material for SOFCs with intermediate operating temperature

S.I. Hashimoto, K. Kammer Hansen, P.H. Larsen, F.W. Poulsen, Mogens Bjerg Mogensen

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

Abstract

Pr0.7Sr0.3Fe1-xNxO3-δ (PSFN; x=0.2-0.5) compounds were synthesized and characterized by powder X-ray diffraction (XRD), thermal expansion coefficient (TEC) measurements, electrical conductivity and electrochemical impedance spectroscopy on cone-shaped electrodes on a Ce0.9Gd0.1O1.95 (CGO10) electrolyte. T he main phase of the powders belongs to the orthorhombic crystal system. The conductivities are fairly high, e.g., around 450 scm(-1) at 600 &DEG; C for the x=0.3 compound. The TEC of the compounds is close to the values of ceria-based electrolytes PSEN showed hysteresis in the temperature dependence of the conductivity, TEC and area-specific polarization resistance R-pol. It is considered that the hysteresis was caused by relatively slow adjustment of the oxygen stoichiometry. The electrochemical La0.6Sr0.4Fe0.8Co0.2O3-δ. &COPY; 2004 Elsevier B.V. All rights reserved.

Original language	English
Journal	Solid State Ionics
Volume	176
Issue number	11-12
Pages (from-to)	1013-1020
ISSN	0167-2738
DOIs	https://doi.org/10.1016/j.ssi.2004.09.010
Publication status	Published - 2005

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title = "A study of Pr0.7Sr0.3Fe1-xNixO3-δ as a cathode material for SOFCs with intermediate operating temperature",

abstract = "Pr0.7Sr0.3Fe1-xNxO3-δ (PSFN; x=0.2-0.5) compounds were synthesized and characterized by powder X-ray diffraction (XRD), thermal expansion coefficient (TEC) measurements, electrical conductivity and electrochemical impedance spectroscopy on cone-shaped electrodes on a Ce0.9Gd0.1O1.95 (CGO10) electrolyte. T he main phase of the powders belongs to the orthorhombic crystal system. The conductivities are fairly high, e.g., around 450 scm(-1) at 600 &DEG; C for the x=0.3 compound. The TEC of the compounds is close to the values of ceria-based electrolytes PSEN showed hysteresis in the temperature dependence of the conductivity, TEC and area-specific polarization resistance R-pol. It is considered that the hysteresis was caused by relatively slow adjustment of the oxygen stoichiometry. The electrochemical La0.6Sr0.4Fe0.8Co0.2O3-δ. &COPY; 2004 Elsevier B.V. All rights reserved. ",

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TY - JOUR

T1 - A study of Pr0.7Sr0.3Fe1-xNixO3-δ as a cathode material for SOFCs with intermediate operating temperature

AU - Hashimoto, S.I.

AU - Kammer Hansen, K.

AU - Larsen, P.H.

AU - Poulsen, F.W.

AU - Mogensen, Mogens Bjerg

PY - 2005

Y1 - 2005

N2 - Pr0.7Sr0.3Fe1-xNxO3-δ (PSFN; x=0.2-0.5) compounds were synthesized and characterized by powder X-ray diffraction (XRD), thermal expansion coefficient (TEC) measurements, electrical conductivity and electrochemical impedance spectroscopy on cone-shaped electrodes on a Ce0.9Gd0.1O1.95 (CGO10) electrolyte. T he main phase of the powders belongs to the orthorhombic crystal system. The conductivities are fairly high, e.g., around 450 scm(-1) at 600 &DEG; C for the x=0.3 compound. The TEC of the compounds is close to the values of ceria-based electrolytes PSEN showed hysteresis in the temperature dependence of the conductivity, TEC and area-specific polarization resistance R-pol. It is considered that the hysteresis was caused by relatively slow adjustment of the oxygen stoichiometry. The electrochemical La0.6Sr0.4Fe0.8Co0.2O3-δ. &COPY; 2004 Elsevier B.V. All rights reserved.

AB - Pr0.7Sr0.3Fe1-xNxO3-δ (PSFN; x=0.2-0.5) compounds were synthesized and characterized by powder X-ray diffraction (XRD), thermal expansion coefficient (TEC) measurements, electrical conductivity and electrochemical impedance spectroscopy on cone-shaped electrodes on a Ce0.9Gd0.1O1.95 (CGO10) electrolyte. T he main phase of the powders belongs to the orthorhombic crystal system. The conductivities are fairly high, e.g., around 450 scm(-1) at 600 &DEG; C for the x=0.3 compound. The TEC of the compounds is close to the values of ceria-based electrolytes PSEN showed hysteresis in the temperature dependence of the conductivity, TEC and area-specific polarization resistance R-pol. It is considered that the hysteresis was caused by relatively slow adjustment of the oxygen stoichiometry. The electrochemical La0.6Sr0.4Fe0.8Co0.2O3-δ. &COPY; 2004 Elsevier B.V. All rights reserved.

KW - 2-E tekno

U2 - 10.1016/j.ssi.2004.09.010

DO - 10.1016/j.ssi.2004.09.010

M3 - Journal article

SN - 0167-2738

VL - 176

SP - 1013

EP - 1020

JO - Solid State Ionics

JF - Solid State Ionics

IS - 11-12

ER -