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Enhanced ionic conductivity of yttria-stabilized ZrO2 with natural CuFe-oxide mineral heterogeneous composite for low temperature solid oxide fuel cells
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2017 (English)In: International journal of hydrogen energy, ISSN 0360-3199, E-ISSN 1879-3487, Vol. 42, no 27, p. 17495-17503Article in journal (Refereed) Published
Abstract [en]

We report for the first time that the commercial yttrium stabilized zirconia (YSZ) nano composite with a natural CuFe-oxide mineral (CF) exhibits a greatly enhanced ionic conductivity in the low temperature range (500-600 degrees C), e.g. 0.48 S/cm at 550 degrees C. The CF YSZ composite was prepared via a nanocomposite approach. Fuel cells were fabricated by using a CF YSZ electrolyte layer between the symmetric electrodes of the Ni0.8Co0.2Al0.5Li (NCAL) coated Ni foam. The maximum power output of 562 mW/cm(2) has been achieved at 550 degrees C. Even the CF alone to replace the electrolyte the device reached the maximum power of 281 mW/cm(2) at the same temperature. Different ion-conduction mechanisms for YSZ and CF YSZ are proposed. This work provides a new approach to develop natural mineral composites for advanced low temperature solid oxide fuel cells with a great marketability.

Place, publisher, year, edition, pages
Elsevier, 2017. Vol. 42, no 27, p. 17495-17503
Keywords [en]
CuFe-oxide mineral, Yttria-stabilized ZrO2, Heterogeneous composite electrolyte, Low temperature solid oxide fuel cells
National Category
Energy Engineering
Identifiers
URN: urn:nbn:se:kth:diva-212941DOI: 10.1016/j.ijhydene.2017.05.218ISI: 000406725500057Scopus ID: 2-s2.0-85020921331OAI: oai:DiVA.org:kth-212941DiVA, id: diva2:1136010
Conference
2nd International Symposium on Catalytic Science and Technology in Sustainable Energy and Environment (EECAT), OCT 11-14, 2016, Tianjin, China
Note

QC 20170825

Available from: 2017-08-25 Created: 2017-08-25 Last updated: 2017-08-25Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
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  • vancouver
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More styles
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  • de-DE
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