SOFC Performance with Fe-Cr-Mn Alloy Interconnect

doi:https://doi.org/10.1149/1.1864332

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

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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:: Simner, Steve P; Anderson, Michael D; Xia, Gordon; Yang, Z Gary; Pederson, Larry R; Stevenson, Jeffry W

Publication Date:: 2005-04-01

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.

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                    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

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                    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.

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@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}

}

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