Conductivity and electrochemical characterization of PrFe1-xNixO3-δ at high temperature

S. Hashimoto; K. Kammer; F. W. Poulsen; M. Mogensen

doi:10.1016/j.jallcom.2006.02.068

Conductivity and electrochemical characterization of PrFe_1-xNi_xO_3-δ at high temperature

S. Hashimoto, K. Kammer, F. W. Poulsen, M. Mogensen

ENV - Environmental Studies for Advanced Society

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

Abstract

PrFe_1-xNi_xO_3-δ (x = 0.4-0.6) compounds were synthesized and characterized by powder XRD, electrical conductivity and electrochemical impedance spectroscopy on point electrodes on a Ce_0.9Gd_0.1O_2-δ (CGO10) electrolyte. As a reference, the electrochemical performance of LaFe_0.4Ni_0.6O_3-δ was also measured. The main phase in the PrFe_1-xNi_xO_3-δ series was perovskite-type structure and belonged to the orthorhombic crystal system. The conductivities are fairly high, e.g. around 220 S cm^-1 at 873 K for the x = 0.4 compound. The electrochemical performance of the PrFe_1-xNi_xO_3-δ series is similar to that of La_0.6Sr_0.4Fe_0.8Co_0.2O_3-δ, which is a good candidate as a cathode material for SOFCs operating at intermediate temperature. The electrochemical performance of LaFe_0.4Ni_0.6O_3-δ was even higher than that of the PrFe_1-xNi_xO_3-δ series and the polarization resistance was 0.14 Ω cm² at 1073 K measured on a point electrode.

Original language	English
Pages (from-to)	256-261
Number of pages	6
Journal	Journal of Alloys and Compounds
Volume	428
Issue number	1-2
DOIs	https://doi.org/10.1016/j.jallcom.2006.02.068
Publication status	Published - 2007 Jan 31

Keywords

Ceramics
Crystal structure and symmetry
Electronic transport
Fuel cell
X-ray diffraction

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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10.1016/j.jallcom.2006.02.068

Cite this

@article{32f1025ca3204f1381aaa405bb1a96af,

title = "Conductivity and electrochemical characterization of PrFe1-xNixO3-δ at high temperature",

abstract = "PrFe1-xNixO3-δ (x = 0.4-0.6) compounds were synthesized and characterized by powder XRD, electrical conductivity and electrochemical impedance spectroscopy on point electrodes on a Ce0.9Gd0.1O2-δ (CGO10) electrolyte. As a reference, the electrochemical performance of LaFe0.4Ni0.6O3-δ was also measured. The main phase in the PrFe1-xNixO3-δ series was perovskite-type structure and belonged to the orthorhombic crystal system. The conductivities are fairly high, e.g. around 220 S cm-1 at 873 K for the x = 0.4 compound. The electrochemical performance of the PrFe1-xNixO3-δ series is similar to that of La0.6Sr0.4Fe0.8Co0.2O3-δ, which is a good candidate as a cathode material for SOFCs operating at intermediate temperature. The electrochemical performance of LaFe0.4Ni0.6O3-δ was even higher than that of the PrFe1-xNixO3-δ series and the polarization resistance was 0.14 Ω cm2 at 1073 K measured on a point electrode.",

keywords = "Ceramics, Crystal structure and symmetry, Electronic transport, Fuel cell, X-ray diffraction",

author = "S. Hashimoto and K. Kammer and Poulsen, {F. W.} and M. Mogensen",

note = "Funding Information: This work was supported by the Danish Energy Agency, contract no. 1443/02-0001 EFP 2002 DK-SOFC b, Long term R&D. The help from all in the SOFC group at Ris{\o} is appreciated. Copyright: Copyright 2008 Elsevier B.V., All rights reserved.",

year = "2007",

month = jan,

day = "31",

doi = "10.1016/j.jallcom.2006.02.068",

language = "English",

volume = "428",

pages = "256--261",

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T1 - Conductivity and electrochemical characterization of PrFe1-xNixO3-δ at high temperature

AU - Hashimoto, S.

AU - Kammer, K.

AU - Poulsen, F. W.

AU - Mogensen, M.

N1 - Funding Information: This work was supported by the Danish Energy Agency, contract no. 1443/02-0001 EFP 2002 DK-SOFC b, Long term R&D. The help from all in the SOFC group at Risø is appreciated. Copyright: Copyright 2008 Elsevier B.V., All rights reserved.

PY - 2007/1/31

Y1 - 2007/1/31

N2 - PrFe1-xNixO3-δ (x = 0.4-0.6) compounds were synthesized and characterized by powder XRD, electrical conductivity and electrochemical impedance spectroscopy on point electrodes on a Ce0.9Gd0.1O2-δ (CGO10) electrolyte. As a reference, the electrochemical performance of LaFe0.4Ni0.6O3-δ was also measured. The main phase in the PrFe1-xNixO3-δ series was perovskite-type structure and belonged to the orthorhombic crystal system. The conductivities are fairly high, e.g. around 220 S cm-1 at 873 K for the x = 0.4 compound. The electrochemical performance of the PrFe1-xNixO3-δ series is similar to that of La0.6Sr0.4Fe0.8Co0.2O3-δ, which is a good candidate as a cathode material for SOFCs operating at intermediate temperature. The electrochemical performance of LaFe0.4Ni0.6O3-δ was even higher than that of the PrFe1-xNixO3-δ series and the polarization resistance was 0.14 Ω cm2 at 1073 K measured on a point electrode.

AB - PrFe1-xNixO3-δ (x = 0.4-0.6) compounds were synthesized and characterized by powder XRD, electrical conductivity and electrochemical impedance spectroscopy on point electrodes on a Ce0.9Gd0.1O2-δ (CGO10) electrolyte. As a reference, the electrochemical performance of LaFe0.4Ni0.6O3-δ was also measured. The main phase in the PrFe1-xNixO3-δ series was perovskite-type structure and belonged to the orthorhombic crystal system. The conductivities are fairly high, e.g. around 220 S cm-1 at 873 K for the x = 0.4 compound. The electrochemical performance of the PrFe1-xNixO3-δ series is similar to that of La0.6Sr0.4Fe0.8Co0.2O3-δ, which is a good candidate as a cathode material for SOFCs operating at intermediate temperature. The electrochemical performance of LaFe0.4Ni0.6O3-δ was even higher than that of the PrFe1-xNixO3-δ series and the polarization resistance was 0.14 Ω cm2 at 1073 K measured on a point electrode.

KW - Ceramics

KW - Crystal structure and symmetry

KW - Electronic transport

KW - Fuel cell

KW - X-ray diffraction

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