Long-term Cell Testing of Interlayer-free Lanthanum Strontium Cobalt Ferrite Cathodes for Solid Oxide Fuel Cells

Authors

  • Gianfranco DiGiuseppe Kettering University, Department of Mechanical Engineering, 1700 University Avenue, Flint, Michigan 48504 USA
  • Venkatesh Boddapati Kettering University, Department of Mechanical Engineering, 1700 University Avenue, Flint, Michigan 48504 USA
  • Hiten Mothikhana Kettering University, Department of Mechanical Engineering, 1700 University Avenue, Flint, Michigan 48504 USA

Keywords:

Solid oxide fuel cells, LSCF, Cathodes, YSZ, SDC

Abstract

Sub-stoichiometric LSCF nanopowders with composition of (La0.6Sr0.40)0.95Co0.2Fe0.80O3-d were prepared using a nitrate-glycine process. The particle size is estimated to be 28.8 nm using the Scherrer equation. A sintering study and pull test was done to determine the quality of LSCF adhesion to the YSZ electrolyte. It was found that firing the cathode at 850oC does not provide the best adhesion, but button cell testing data indicate that the performance is stable over relatively long-term tests. The cell performance is not up to par to state-of-the-art Ni-YSZ/YSZ/SDC/LSCF where a barrier layer is used and the cathode is fired at high temperatures. Impedance data indicate that the reason for lower performance is due to higher cathode polarization. However, the results are promising and further studies are warranted because low temperature processing and the removal of the ceria layer can decrease fabrication costs.

Downloads

Published

2017-10-12

Issue

Vol. 4 No. 2 (2017)

Section

Articles

License

Policy for Journals/Articles with Open Access

Authors who publish with this journal agree to the following terms:
    1. Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.

  1. Authors are permitted and encouraged to post links to their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work

Policy for Journals / Manuscript with Paid Access

Authors who publish with this journal agree to the following terms:
    1. Publisher retain copyright .

  1. Authors are permitted and encouraged to post links to their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work .