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Polymer-assistant ceramic nanocomposite materials for advanced fuel cell technologies
KTH, School of Industrial Engineering and Management (ITM), Energy Technology.
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2017 (English)In: Ceramics International, ISSN 0272-8842, E-ISSN 1873-3956, Vol. 43, no 7, p. 5484-5489Article in journal (Refereed) Published
Abstract [en]

In this study, nanocomposites of LaCePr-oxide (LCP) and Ni0.8Co0.15Al0 05LIO2-delta (NCAL) with different contents of polyvinylidene fluoride (PVDF) were prepared and applied to solid oxide fuel cells. The composite materials were characterized by X-ray diffraction analysis (XRD), scanning electron microscope (SEM), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC) and electrochemical impedance spectrum (EIS). The effect of PVDF concentration on the conductivity and performance of the fuel cells was investigated. It was found that PVDF plays a template role of pore forming in the nanocomposites, and the changed microstructure by as-formed pores greatly influences the electrochemical property of the nanocomposites. The cell with 3 wt% PVDF heat-treated at 210 C-omicron achieved the highest power density of 982 mW cm(-2) at 520 C-omicron, which enhanced performance by more than 57% than when no heat-treatment was implemented. It is 66% higher than the cell with no PVDF and no heat-treatment. Pores formed by PVDF after heat-treatment enlarged the triple phase boundary (TPB), which results in improved fuel cell performance.

Place, publisher, year, edition, pages
Elsevier, 2017. Vol. 43, no 7, p. 5484-5489
Keywords [en]
Microstructure, Polymer-assistant ceramic nanocomposite, Fuel cells, Electrochemical performance
National Category
Materials Chemistry
Identifiers
URN: urn:nbn:se:kth:diva-205423DOI: 10.1016/j.ceramint.2017.01.064ISI: 000397075900017Scopus ID: 2-s2.0-85010223456OAI: oai:DiVA.org:kth-205423DiVA, id: diva2:1097231
Note

QC 20170522

Available from: 2017-05-22 Created: 2017-05-22 Last updated: 2017-11-10Bibliographically approved

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CiteExportLink to record
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  • apa
  • harvard1
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