Mechanical strain-enhanced ionic-conductivity in metal oxide membranes for energy applications
Elastic strain generated at the heterointerface between different metal oxides (in oxide nanocompo-sites) have been proposed as a strategy to intrinsically enhance the ionic conductivity at low opera-tion temperatures. Typical strain achieved by selected lattice mismatch at the heterointerface, can be only as high as about 2 − 3%. We investigate an alternative methods for straining oxide-ion conductor thin films and membranes at much higher levels toward plastic regime in order to enhance their ionic conductivity far beyond the current limits. To this end, single- and poly-crystalline thin films of typical oxide-ion conductor materials, will be prepared and transferred into bending setup to incrementally impose strain levels.
Jordan Bouaziz, Claudia Cancellieri, Bastian Rheingans, Lars P. H. Jeurgens, Fabio La Mattina "Advanced Epitaxial Lift-Off and Transfer Procedure for the Fabrication of High-Quality Functional Oxide Membranes", Adv. Mater. Interfaces 2022, 2201458