Cobalt oxides coated commercial Ba0.5Sr0.5Co0.8Fe0.2O3-delta as high performance cathode for low-temperature SOFCs
2016 (English)In: Electrochimica Acta, ISSN 0013-4686, E-ISSN 1873-3859, Vol. 191, 223-229 p.Article in journal (Refereed) PublishedText
In order to improve the catalytic activity of commercial Ba0.5Sr0.5Co0.8Fe0.2O3-delta (BSCF) for low-temperature solid oxide fuel cells (LTSOFC) (300-600 degrees C), CoOx has been used to modify the commercial BSCF through a solution coating approach. Phase and morphology of samples were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM) and energy-dispersive spectrometry (EDS), respectively. BSCF with 10 wt% CoOx exhibited an improved conductivity of 44 S/cm, and achieved a peak power density of 463 mW/cm(2) at 550 degrees C for LTSOFC, which is a 100% enhancement than that with the BSCF cathode. The cathode oxygen reduction reaction (ORR) promoted by CoOx and enhanced device performance mechanism have been proposed. This work provides a new way for the exploitation of high effective cathode materials for LTSOFCs.
Place, publisher, year, edition, pages
Elsevier, 2016. Vol. 191, 223-229 p.
Low-temperature solid oxide fuel cells, Perovskite cathode material, Electrical conductivity, High electrical performance, Oxygen reduction kinetics
IdentifiersURN: urn:nbn:se:kth:diva-184551DOI: 10.1016/j.electacta.2016.01.090ISI: 000371143200027ScopusID: 2-s2.0-84955451175OAI: oai:DiVA.org:kth-184551DiVA: diva2:917275
FunderSwedish Research Council, 621-2011-4983
QC 201604062016-04-062016-04-012016-04-06Bibliographically approved