Key Issues in Processing Metal-Supported Proton Conducting Anodes for SOFCs Applications

BaCe0.65Zr0.2Y0.15O3-δ (BCZY) have been recently proposed for IT-SOFCs due to its high proton conductivity. On the other hand considerable efforts are directed towards the development of metal-supported cells. The combination of the potential advantages offered by either proton conductors based cell...

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Published in:ECS transactions 2011-04, Vol.35 (1), p.1761-1769
Main Authors: Mercadelli, Elisa, Gondolini, Angela, Pinasco, Paola, Sanson, Alessandra, Barison, Simona, Fabrizio, Monica
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container_issue 1
container_start_page 1761
container_title ECS transactions
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creator Mercadelli, Elisa
Gondolini, Angela
Pinasco, Paola
Sanson, Alessandra
Barison, Simona
Fabrizio, Monica
description BaCe0.65Zr0.2Y0.15O3-δ (BCZY) have been recently proposed for IT-SOFCs due to its high proton conductivity. On the other hand considerable efforts are directed towards the development of metal-supported cells. The combination of the potential advantages offered by either proton conductors based cells and metal supported configuration has never been explored. In this work the technological issues to produce proton conducting BCZY-Ni anodes stainless steel-supported were carefully investigated. A tailored porous metal support was produced by tape casting. Afterwards the anode was deposited by screen printing and the resulting bilayer sintered in reducing atmosphere. Each step of the production process was thoroughly investigated. A cations interdiffusion between the metallic support and the anodic layer was observed in all range of temperatures considered. The influence of a CeO2 barrier layer and anode thickness on the cations diffusion and a successful production of planar crack-free anode was deeply analyzed.
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title Key Issues in Processing Metal-Supported Proton Conducting Anodes for SOFCs Applications
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