Preparation and characterization of Pr<sub>0.6</sub>Sr<sub>0.4</sub>FeO<sub>3-δ</sub>-Ce<sub>0.9</sub>Pr<sub>0.1</sub>O<sub>2-δ</sub> nanofiber structured composite cathode for IT-SOFCs
| Data(s) |
15/05/2016
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| Resumo |
<p>In this work, Pr<sub>0.6</sub>Sr<sub>0.4</sub>FeO<sub>3-δ </sub>-Ce<sub>0.9</sub>Pr<sub>0.1</sub>O<sub>2-δ </sub> (PSFO-CPO) nanofibers were synthesized by a one-step electrospin technique for use in intermediate-temperature solid oxide fuel cell (IT-SOFC) applications. PSFO-CPO nanofibers were produced with a diameter of about 100nm and lengths exceeding tens of microns. The thermal expansion coefficient (TEC) matches with standard GDC electrolytes and the resulting conductivity also satisfies the needs of IT-SOFCs cathodes. EIS analysis of the nanofiber structured electrode gives a polarization resistance of 0.072Ωcm<sup>2</sup> at 800°C, smaller than that from the powdered cathode with the same composition. The excellent electrochemical performance can be attributed to the well-constructed microstructure of the nanofiber structured cathode, which promotes surface oxygen diffusion and charge transfer processes. All the results imply that the one-step electrospin method is a facile and practical way of improving the cathode properties and that PSFO-CPO is a promising cathode material for IT-SOFCs.</p> |
| Identificador |
http://dx.doi.org/10.1016/j.ceramint.2016.02.121 http://www.scopus.com/inward/record.url?scp=84975736061&partnerID=8YFLogxK |
| Idioma(s) |
eng |
| Direitos |
info:eu-repo/semantics/closedAccess |
| Fonte |
Jin , C , Mao , Y , Rooney , D W , Zhang , N & Sun , K 2016 , ' Preparation and characterization of Pr 0.6 Sr 0.4 FeO 3-δ -Ce 0.9 Pr 0.1 O 2-δ nanofiber structured composite cathode for IT-SOFCs ' Ceramics international , vol 42 , no. 7 , pp. 9311-9314 . DOI: 10.1016/j.ceramint.2016.02.121 |
| Palavras-Chave | #Nanofiber structured cathode #One-step electrospin technique #PrSrFeO-CePrO #Solid oxide fuel cells #/dk/atira/pure/subjectarea/asjc/2500/2503 #Ceramics and Composites #/dk/atira/pure/subjectarea/asjc/1500/1508 #Process Chemistry and Technology #/dk/atira/pure/subjectarea/asjc/2500/2504 #Electronic, Optical and Magnetic Materials #/dk/atira/pure/subjectarea/asjc/2500/2508 #Surfaces, Coatings and Films #/dk/atira/pure/subjectarea/asjc/2500/2505 #Materials Chemistry |
| Tipo |
article |
