Freeze-casting: Fabrication of highly porous and hierarchical ceramic supports for energy applications

摘要: Abstract The manufacture of structured ceramic porous support knows an important boom since more than a decade with the development new shaping techniques. Among most promising ones, freeze-casting also called Ice-Templating allows fabrication parts exhibiting high porosity (>50%) and vertically aligned hierarchically organized pores. Such structures were firstly conceived for biomedical applications like bone substitute tissue engineering, but distinctive features freeze-cast have attracted attention diverse scientific fields, especially in temperature ceramic-based energy production systems. Indeed, technologies (a) Solid Oxide Fuel Cell (SOFC) Electrolyser (SOEC), (b) gas separation (O 2 , H ) by asymmetric supported membranes based on mixed ionic electronic conductors (MIEC) or hydrogen-permeable metals, (c) Catalytic Membrane Reactor (CMR) systems present component their physical structure. This latest, presenting tortuous pathway access as consequence, transport limitation, is known to be limiting operation at flow streams that would enable reach industrial target. aim this paper give overview method show how its implementation could useful several where key components comprise scaffold. A detailed presentation process characteristics resulting given. characteristic drawbacks conventional scaffolds existing are drawn order highlight expected beneficial effect technique possible ones. Finally, review state art developed up now given illustrate large perspectives opened ceramics fields. Here we suggest discussing about feasibility incorporate applications.