Pr2NiO4–Ag composite cathode for low temperature solid oxide fuel cells with ceria-carbonate composite electrolyte
2012 (English)In: International journal of hydrogen energy, ISSN 0360-3199, Vol. 37, no 24, 19388-19394 p.Article in journal (Refereed) Published
Pr2NiO4-Ag composite was synthesized and evaluated as cathode component for low temperature solid oxide fuel cells based on ceria-carbonate composite electrolyte. X-ray diffraction analysis reveals that the formation of a single phase K2NiF4-type structure occurs at 1000 °C and Pr2NiO4-Ag composite shows chemically compatible with the composite electrolyte. Symmetrical cells impedance measurements prove that Ag displays acceptable electrocatalytic activity toward oxygen reduction reaction at the temperature range of 500-600 °C. Single cells with Ag active component electrodes present better electrochemical performances than those of Ag-free cells. An improved maximum power density of 695 mW cm-2 was achieved at 600 °C using Pr 2NiO4-Ag composite cathode, with humidified hydrogen as fuel and air as the oxidant. Preliminary results suggest that Pr 2NiO4-Ag composite could be adopted as an alternative cathode for low temperature solid oxide fuel cells.
Place, publisher, year, edition, pages
Elsevier, 2012. Vol. 37, no 24, 19388-19394 p.
Ag nano-particle, Composite electrolyte, Impedance spectroscopy, K 2NiF4-type structure cathode, Low temperature solid oxide fuel cells
Research subject SRA - Energy
IdentifiersURN: urn:nbn:se:kth:diva-82148DOI: 10.1016/j.ijhydene.2011.09.124ISI: 000313923900089ScopusID: 2-s2.0-84869836792OAI: oai:DiVA.org:kth-82148DiVA: diva2:497986
FunderEU, FP7, Seventh Framework ProgrammeVinnovaStandUp
QC 201301112012-02-152012-02-112013-04-16Bibliographically approved