Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5148866 | Journal of Power Sources | 2017 | 9 Pages |
Abstract
We fabricated thick films of cubic garnet solid electrolyte AlyLi7-3y-zLa3Zr2-zTazO12 (ALLZTO) by the Aerosol Deposition Method (ADM). Due to the room temperature impact consolidation (RTIC) mechanism, the films become dense. A thermal post-treatment of the film revealed the morphological and process-related impact on the ionic conductivity. As-deposited films show a reduced conductivity around 2·10â7 S/cm. Using electrochemical impedance spectroscopy and high-temperature X-ray diffraction, we found the lattice distortion and nano-crystallinity of the films to be the decisive effect for the conductivity reduction. In our case, post-deposition annealing at 400 °C lead to an increase of the ionic conductivity to 2·10â5 S/cm. With a beginning of sintering at 600 °C, the conductivity successively increased further, reaching values of 7·10â5 S/cm.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Dominik Hanft, Jörg Exner, Ralf Moos,