Multilayered Ceramic Membrane with Ion Conducting Thin Layer Induced by Interface Reaction for Stable Hydrogen Production.

Conventional methods for fabricating multilayered ceramic membranes with ion conducting dense thin layers are often cumbersome, costly, and limited by poor adhesion between layers. Inspired by the architectural structure of the rooted grasses in soil, here, we report an interface-reaction-induced reassembly approach for the direct fabrication of Ce 0.9 Gd 0.1 O 2-δ (CGO) thin layers rooted in the parent multilayered ceramic membranes by only one firing step. The CGO dense layers are very thin, and adhered strongly to the parent support layer, ensuring low ionic transport resistance and structural integrity of the multilayered membranes. When using as an oxygen permeable membrane for upgrading fossil-fuel-derived hydrogen, it shows very long durability in harsh conditions containing H 2 O, CH 4 , H 2 , CO 2 and H 2 S. Furthermore, our approach is highly scalable and applicable to a wide variety of ion conducting thin layers, including Y 0.08 Zr 0.92 O 2-δ , Ce 0.9 Sm 0.1 O 2-δ and Ce 0.9 Pr 0.1 O 2-δ .