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Cobalt oxides coated commercial Ba0.5Sr0.5Co0.8Fe0.2O3-delta as high performance cathode for low-temperature SOFCs
KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Heat and Power Technology. Faculty of Computer and Information, Hubei University, Wuhan, Hubei, China.ORCID iD: 0000-0003-2151-2913
KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Heat and Power Technology. Faculty of Computer and Information, Hubei University, Wuhan, Hubei, China.
KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Heat and Power Technology.
KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Heat and Power Technology.
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2016 (English)In: Electrochimica Acta, ISSN 0013-4686, E-ISSN 1873-3859, Vol. 191, 223-229 p.Article in journal (Refereed) Published
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Abstract [en]

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.
Keyword [en]
Low-temperature solid oxide fuel cells, Perovskite cathode material, Electrical conductivity, High electrical performance, Oxygen reduction kinetics
National Category
Materials Chemistry
Identifiers
URN: urn:nbn:se:kth:diva-184551DOI: 10.1016/j.electacta.2016.01.090ISI: 000371143200027Scopus ID: 2-s2.0-84955451175OAI: oai:DiVA.org:kth-184551DiVA: diva2:917275
Funder
Swedish Research Council, 621-2011-4983
Note

QC 20160406

Available from: 2016-04-06 Created: 2016-04-01 Last updated: 2016-04-06Bibliographically approved

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