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Title: SOFC Performance with Fe-Cr-Mn Alloy Interconnect

Abstract

The performance of anode-supported SOFC’s utilizing a Mn-containing ferritic stainless steel (Crofer22 APU) as the cathode current collector were assessed. Three cathodes were considered: (La0.8Sr0.2)0.99MnO3, (La0.8Sr0.2)0.99FeO3and (La0.6Sr0.4)0.98Fe0.8C00.2O3 (all samples incorporated a Sm-doped CeO2 interlayer between the cathode and the thin film YSZ electrolyte). Inclusion of the Fe-Cr alloy caused rapid degradation in all samples, which was attributed to solid-state reactivity at the cathode-Crofer interface, in addition to Cr volatilization from the alloy and subsequent condensation/reaction within the cathode and at the cathode-electrolyte interface. In situ- HTXRD was used to access the cathode-Crofer reaction products. Pre-oxidation of the Crofer at 800 degrees C for 500 hours to form a protective (Mn,Cr)3O4 spinel coating resulted in a marginal reduction of the cell degradation rate.

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
15016569
Report Number(s):
PNNL-SA-42784
Journal ID: ISSN 0013-4651; JESOAN; AA2530000; TRN: US200515%%94
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Journal Name:
Journal of the Electrochemical Society, 152(4):A740-A745
Additional Journal Information:
Journal Volume: 152; Journal Issue: 4; Journal ID: ISSN 0013-4651
Country of Publication:
United States
Language:
English
Subject:
30 DIRECT ENERGY CONVERSION; 36 MATERIALS SCIENCE; ALLOYS; CATHODES; COATINGS; EVAPORATION; PERFORMANCE; SOLID OXIDE FUEL CELLS; SPINELS; STAINLESS STEELS; THIN FILMS

Citation Formats

Simner, Steve P, Anderson, Michael D, Xia, Gordon, Yang, Z Gary, Pederson, Larry R, and Stevenson, Jeffry W. SOFC Performance with Fe-Cr-Mn Alloy Interconnect. United States: N. p., 2005. Web. doi:10.1149/1.1864332.
Simner, Steve P, Anderson, Michael D, Xia, Gordon, Yang, Z Gary, Pederson, Larry R, & Stevenson, Jeffry W. SOFC Performance with Fe-Cr-Mn Alloy Interconnect. United States. https://doi.org/10.1149/1.1864332
Simner, Steve P, Anderson, Michael D, Xia, Gordon, Yang, Z Gary, Pederson, Larry R, and Stevenson, Jeffry W. Fri . "SOFC Performance with Fe-Cr-Mn Alloy Interconnect". United States. https://doi.org/10.1149/1.1864332.
@article{osti_15016569,
title = {SOFC Performance with Fe-Cr-Mn Alloy Interconnect},
author = {Simner, Steve P and Anderson, Michael D and Xia, Gordon and Yang, Z Gary and Pederson, Larry R and Stevenson, Jeffry W},
abstractNote = {The performance of anode-supported SOFC’s utilizing a Mn-containing ferritic stainless steel (Crofer22 APU) as the cathode current collector were assessed. Three cathodes were considered: (La0.8Sr0.2)0.99MnO3, (La0.8Sr0.2)0.99FeO3and (La0.6Sr0.4)0.98Fe0.8C00.2O3 (all samples incorporated a Sm-doped CeO2 interlayer between the cathode and the thin film YSZ electrolyte). Inclusion of the Fe-Cr alloy caused rapid degradation in all samples, which was attributed to solid-state reactivity at the cathode-Crofer interface, in addition to Cr volatilization from the alloy and subsequent condensation/reaction within the cathode and at the cathode-electrolyte interface. In situ- HTXRD was used to access the cathode-Crofer reaction products. Pre-oxidation of the Crofer at 800 degrees C for 500 hours to form a protective (Mn,Cr)3O4 spinel coating resulted in a marginal reduction of the cell degradation rate.},
doi = {10.1149/1.1864332},
url = {https://www.osti.gov/biblio/15016569}, journal = {Journal of the Electrochemical Society, 152(4):A740-A745},
issn = {0013-4651},
number = 4,
volume = 152,
place = {United States},
year = {2005},
month = {4}
}