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| Home > Publications database > Dense yttria-stabilised zirconia electrolyte layers for SOFC by reactive magnetron sputtering |
| Journal Article | PreJuSER-20198 |
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2012
Elsevier
New York, NY [u.a.]
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Please use a persistent id in citations: doi:10.1016/j.jpowsour.2012.01.054
Abstract: The morphology of layers of fully yttria-stabilised zirconia (YSZ) deposited by reactive magnetron sputtering was studied with regard to their application as thin electrolytes for solid oxide fuel cells (SOFC). A thin layer of YSZ was deposited on top of anode substrates for SOFC. The substrate comprises the warm-pressed anode itself, which supports the complete cell, and an anode functional layer deposited by vacuum slip casting, which is in direct contact with the electrolyte. From previous experiments it is known that non-assisted reactive DC magnetron sputtering produces layers with rather high leak-rate even when depositing at high temperatures. Residual pores on the substrates' surfaces are responsible for the incomplete coverage by the thin electrolyte and are detrimental to the cell's performance. In the present paper, the effect of increasing bias power applied to the substrate is studied. A clear improvement of the layer morphology and gas-tightness can be observed with increasing bias power. SOFC single cell-tests show art improved performance with regard to standard wet-ceramic processing routes. (C) 2012 Elsevier B.V. All rights reserved.
Keyword(s): J ; SOFC (auto) ; Ion-assisted PVD (auto) ; Physical vapour-phase deposition (auto) ; 8YSZ (auto) ; Thin electrolyte layers (auto)
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