Enhanced performance of the Sm sub(0.5Sr) sub(0).5CoO sub(3 - [delta] double layer porous cathode for solid oxide fuel cells)

Porous strontium-doped samarium cobaltite (Sm sub(0.5Sr) sub(0).5CoO sub(3 - [delta], SSC) cathode films with nano-porous single layer and nano/micro porous double layer are fabricated by electrostatic spray deposition (ESD) for SOFC applications. The two-step deposition is carried out on disc-type...

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Published inSolid state ionics Vol. 184; no. 1; pp. 35 - 38
Main Authors Park, Inyu, Im, Jongmo, Choi, Jinyi, Ahn, Jungmin, Shin, Dongwook
Format Journal Article
LanguageEnglish
Published 03.03.2011
Subjects
Cathodes
Cathodic polarization
Double layer
Electrodes
Nanocomposites
Nanomaterials
Nanostructure
Solid oxide fuel cells
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Summary:Porous strontium-doped samarium cobaltite (Sm sub(0.5Sr) sub(0).5CoO sub(3 - [delta], SSC) cathode films with nano-porous single layer and nano/micro porous double layer are fabricated by electrostatic spray deposition (ESD) for SOFC applications. The two-step deposition is carried out on disc-type pellets of samarium doped ceria by separate consecutive processes for nano-porous functional layer near the electrode/electrolyte interface and for the micro-porous layer near the electrode surface. Thickness of layers is ~ 1 [micro]m for nano-porous and ~ 8 [micro]m for micro-porous layer. The SSC/SDC half-cell with the double layer porous cathode is confirmed to be more effective for decreasing polarization resistance, especially for middle and low frequency ranges, than the single layer nano-porous cathode.)
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
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ISSN:0167-2738
DOI:10.1016/j.ssi.2010.09.017