Evaluation of lanthanum ferrite coated interconnect for intermediate temperature solid oxide fuel cells

C. J. Fu; K. N. Sun; N. Q. Zhang; X. B. Chen; D. R. Zhou

doi:10.1016/j.tsf.2007.09.002

Evaluation of lanthanum ferrite coated interconnect for intermediate temperature solid oxide fuel cells

C. J. Fu, K. N. Sun^*, N. Q. Zhang, X. B. Chen, D. R. Zhou

^*Corresponding author for this work

Harbin Institute of Technology

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

20 Citations (Scopus)

Abstract

In this paper, an La_0.8Sr_0.2FeO_3-δ (LSF20) protective layer has been prepared on SUS430 alloy substrate using the atmospheric plasma spraying technology combined with nitrate solution impregnation and its effectiveness was evaluated. Thermodynamic and electrochemical performance tests confirmed the effectiveness of the LSF20 protective layer for decreasing the oxidation rate of the alloy and abating the chromium poisoning to the cathode. Upon exposure to air at 800 °C for 100 h, the oxidation rate of LSF20-coated alloy was reduced 56 folds compared to that of the uncoated alloy, and the LSF20-coated alloy produced a low area specific resistance of 1 mΩ cm² after oxidized in air at 800 °C for 1000 h. Half-cell measurement results indicate that the influence of chromium poisoning on the La_0.8Sr_0.2MnO_3-δ cathode was greatly inhibited with the LSF20-coated SUS430 alloy as interconnects.

Original language	English
Pages (from-to)	1857-1863
Number of pages	7
Journal	Thin Solid Films
Volume	516
Issue number	8
DOIs	https://doi.org/10.1016/j.tsf.2007.09.002
Publication status	Published - 29 Feb 2008
Externally published	Yes

Keywords

Alloys
Interconnects
LaSrFeO
Protective coatings
SOFC

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10.1016/j.tsf.2007.09.002

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title = "Evaluation of lanthanum ferrite coated interconnect for intermediate temperature solid oxide fuel cells",

abstract = "In this paper, an La0.8Sr0.2FeO3-δ (LSF20) protective layer has been prepared on SUS430 alloy substrate using the atmospheric plasma spraying technology combined with nitrate solution impregnation and its effectiveness was evaluated. Thermodynamic and electrochemical performance tests confirmed the effectiveness of the LSF20 protective layer for decreasing the oxidation rate of the alloy and abating the chromium poisoning to the cathode. Upon exposure to air at 800 °C for 100 h, the oxidation rate of LSF20-coated alloy was reduced 56 folds compared to that of the uncoated alloy, and the LSF20-coated alloy produced a low area specific resistance of 1 mΩ cm2 after oxidized in air at 800 °C for 1000 h. Half-cell measurement results indicate that the influence of chromium poisoning on the La0.8Sr0.2MnO3-δ cathode was greatly inhibited with the LSF20-coated SUS430 alloy as interconnects.",

keywords = "Alloys, Interconnects, LaSrFeO, Protective coatings, SOFC",

author = "Fu, {C. J.} and Sun, {K. N.} and Zhang, {N. Q.} and Chen, {X. B.} and Zhou, {D. R.}",

year = "2008",

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day = "29",

doi = "10.1016/j.tsf.2007.09.002",

language = "English",

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journal = "Thin Solid Films",

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T1 - Evaluation of lanthanum ferrite coated interconnect for intermediate temperature solid oxide fuel cells

AU - Fu, C. J.

AU - Sun, K. N.

AU - Zhang, N. Q.

AU - Chen, X. B.

AU - Zhou, D. R.

PY - 2008/2/29

Y1 - 2008/2/29

N2 - In this paper, an La0.8Sr0.2FeO3-δ (LSF20) protective layer has been prepared on SUS430 alloy substrate using the atmospheric plasma spraying technology combined with nitrate solution impregnation and its effectiveness was evaluated. Thermodynamic and electrochemical performance tests confirmed the effectiveness of the LSF20 protective layer for decreasing the oxidation rate of the alloy and abating the chromium poisoning to the cathode. Upon exposure to air at 800 °C for 100 h, the oxidation rate of LSF20-coated alloy was reduced 56 folds compared to that of the uncoated alloy, and the LSF20-coated alloy produced a low area specific resistance of 1 mΩ cm2 after oxidized in air at 800 °C for 1000 h. Half-cell measurement results indicate that the influence of chromium poisoning on the La0.8Sr0.2MnO3-δ cathode was greatly inhibited with the LSF20-coated SUS430 alloy as interconnects.

AB - In this paper, an La0.8Sr0.2FeO3-δ (LSF20) protective layer has been prepared on SUS430 alloy substrate using the atmospheric plasma spraying technology combined with nitrate solution impregnation and its effectiveness was evaluated. Thermodynamic and electrochemical performance tests confirmed the effectiveness of the LSF20 protective layer for decreasing the oxidation rate of the alloy and abating the chromium poisoning to the cathode. Upon exposure to air at 800 °C for 100 h, the oxidation rate of LSF20-coated alloy was reduced 56 folds compared to that of the uncoated alloy, and the LSF20-coated alloy produced a low area specific resistance of 1 mΩ cm2 after oxidized in air at 800 °C for 1000 h. Half-cell measurement results indicate that the influence of chromium poisoning on the La0.8Sr0.2MnO3-δ cathode was greatly inhibited with the LSF20-coated SUS430 alloy as interconnects.

KW - Alloys

KW - Interconnects

KW - LaSrFeO

KW - Protective coatings

KW - SOFC

UR - http://www.scopus.com/inward/record.url?scp=38649142169&partnerID=8YFLogxK

U2 - 10.1016/j.tsf.2007.09.002

DO - 10.1016/j.tsf.2007.09.002

M3 - Article

AN - SCOPUS:38649142169

SN - 0040-6090

VL - 516

SP - 1857

EP - 1863

JO - Thin Solid Films

JF - Thin Solid Films

IS - 8

ER -

Evaluation of lanthanum ferrite coated interconnect for intermediate temperature solid oxide fuel cells

Abstract

Keywords

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