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- W2011903353 abstract "Solid oxide electrolyser cells (SOECs) have great potential for efficient and economical production of hydrogen fuel. Element diffusion between the Ni-cermet electrode and the metal substrate of metal supported cells (MSC) is a known problem in fuel cell and electrolysis technology. In order to hinder this unintentional mass transport, different ceramic diffusion barrier layers (DBLs) are included in recent cell design concepts. This paper is based on wavelength dispersive X-ray fluorescence investigations of different SOEC and focuses on Fe, Cr and Ni diffusion between the metal grains of the cathode and the metal substrate. Due to the low detection limits and therefore high analytical sensitivity, wavelength dispersive electron probe microanalysis (EPMA) provides a precise method to determine element distribution, absolute element concentration and changes between the reference material and aged cells on a microstructural level by element mappings and concentration profiles. The results of this work show considerable concentration gradients in the metal grains caused by mass exchange during cell operation. Diffusion can be inhibited significantly by integrating different ceramic DBLs of doped LaCrO3-type or doped LaMnO3-type perovskite, either by vacuum plasma spraying (VPS) or physical vapour deposition technique (PVD)." @default.
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- W2011903353 date "2009-12-01" @default.
- W2011903353 modified "2023-10-12" @default.
- W2011903353 title "WDX Studies on Ceramic Diffusion Barrier Layers of Metal Supported SOECs" @default.
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- W2011903353 doi "https://doi.org/10.1002/fuce.200800118" @default.
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