Effect of coal syngas fuel composition on the performance and stability of oxide anodes

D. M. Bierschenk, J. M. Haag, K. R. Poeppelmeier, S. A. Barnett

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)

Abstract

The performance and stability of La0.8Sr0.2Cr 0.82RU0.18O3-δ (LSCrRu)-Gd 0.1Ce0.9O2(GDC) and LaSr2Fe 2CrO9.δ(LSCrFe)-GDC composite solid oxide fuel cell (SOFC) anodes were evaluated during SOFC operation on surrogate coal-derived syngas and CO-H2 mixtures. The LSCrRu-GDC cells exhibited the least coking and best performance stability in syngas compositions expected to cause coking, although the LSCrFe-GDC anodes were significantly better than Ni-YSZ. No degradation and minimal coking was observed in LSCrRu-GDC cells during operation on coal gas or pure CO at 700 - 800°C. All anodes tested showed higher anode polarization resistance (RP,A) in pure CO compared to H2 fuel; the LSCrFe-GDC anode showed lower RP,A in pure CO than the LSCrRu-GDC anode. In coal gas, on the other hand, the LSCrRu-GDC anode showed an RP,A value comparable to that of LSCrFe-GDC. This was explained by the production of H2 at the LSCrRu-GDC anode, due to significant activity for the water gas shift reaction.

Original languageEnglish
Title of host publicationECS Transactions - Solid Oxide Fuel Cells 11 (SOFC-XI)
Pages2107-2116
Number of pages10
Edition2 PART 3
DOIs
Publication statusPublished - Dec 1 2009
Event11th International Symposium on Solid Oxide Fuel Cells (SOFC-XI)- 216th ECS Meeting - Vienna, Austria
Duration: Oct 4 2009Oct 9 2009

Publication series

NameECS Transactions
Number2 PART 3
Volume25
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Other

Other11th International Symposium on Solid Oxide Fuel Cells (SOFC-XI)- 216th ECS Meeting
CountryAustria
CityVienna
Period10/4/0910/9/09

ASJC Scopus subject areas

  • Engineering(all)

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    Bierschenk, D. M., Haag, J. M., Poeppelmeier, K. R., & Barnett, S. A. (2009). Effect of coal syngas fuel composition on the performance and stability of oxide anodes. In ECS Transactions - Solid Oxide Fuel Cells 11 (SOFC-XI) (2 PART 3 ed., pp. 2107-2116). (ECS Transactions; Vol. 25, No. 2 PART 3). https://doi.org/10.1149/1.3205758