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FZJ-2015-04713

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Functional Layers for Solid Oxide Fuel Cells Applied by Physical Vapor Deposition (PVD)

Uhlenbruck, S. (Corresponding author)FZJ* ; Weiler, C. ; Nédélec, R. ; Sebold, D.FZJ* ; de Haart, L. G. J.FZJ* ; Buchkremer, H. P.FZJ*

2015

Abstract: Metal-supported solid oxide fuel cells require application technologies for thin ceramic films at lower substrate temperatures compared to conventional ceramic sintering methods. Physical vapor deposition (PVD) was used to prepare gas-tight and porous functional layers, respectively, for Solid Oxide Fuel Cells. This work discusses the physical vapor deposition of perovskites with a nominal composition of La0.58Sr0.40Co0.2Fe0.8O3-delta for cathode layers, NiO/8YSZ anodes and YSZ/ CGO composite electrolytes with sub-micrometer layer thicknesses and lateral dimensions of up to 100 mm∙100 mm. Magnetron sputtering and electron beam evaporation were used as PVD techniques, with and without additional ion bombardment of the layers during deposition. The influence of the deposition parameters on the layer morphology and the electrochemical performance is studied by scanning electron microscopy analysis and current-voltage characterisation under fuel cell operation conditions, respectively.

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Contributing Institute(s):

1. Werkstoffsynthese und Herstellungsverfahren (IEK-1)
2. Grundlagen der Elektrochemie (IEK-9)

Research Program(s):

1. 131 - Electrochemical Storage (POF3-131) (POF3-131)

Appears in the scientific report 2015

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