Abstract
Ceramic hydrogen separation membrane is a promising technology for obtaining pure hydrogen in a wide range of processes including power generation with pre-combustion CO2 capture, water-gas shift, methane reforming, etc. This work presents for the first time the production of cer-cer asymmetrical composite membranes. BaCe0.65Zr0.20Y0.15O3-δ (BCZY) supported BCZY- Gd0.2Ce0.8O2-δ (GDC) membranes were produced by tape casting. Three different sintering aid incorporation methods were investigated to enhance the final density of the BCZY-GDC layer. The optimization of the whole process leads to produce planar crack-free asymmetrical proton conductive membranes with Ø=12mm, constituted by a porous 350µm thick BCZY substrate with an open porosity of 48%, and a 20µm thick gas tight BCZY-GDC layer.
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