Journal article
High ionic conductivity in confined bismuth oxide-based heterostructures
Department of Energy Conversion and Storage, Technical University of Denmark1
Electrofunctional materials, Department of Energy Conversion and Storage, Technical University of Denmark2
Ceramic Engineering & Science, Department of Energy Conversion and Storage, Technical University of Denmark3
Aarhus University4
Bismuth trioxide in the cubic fluorite phase (δ-Bi2O3) exhibits the highest oxygen ionic conductivity. In this study, we were able to stabilize the pure -Bi2O3 at low temperature with no addition of stabilizer but only by engineering the interface, using highly coherent heterostructures made of alternative layers of δ-Bi2O3 and Yttria Stabilized Zirconia (YSZ), deposited by pulsed laser deposition.
The resulting [δ-Bi2O3=YSZ] heterostructures are found to be stable over a wide temperature range (500-750 °C) and exhibits stable high ionic conductivity over a long time comparable to the value of the pure δ-Bi2O3, which is approximately two orders of magnitude higher than the conductivity of YSZ bulk.
| Language: | English |
|---|---|
| Publisher: | AIP Publishing LLC |
| Year: | 2016 |
| Pages: | 121101 |
| ISSN: | 2166532x |
| Types: | Journal article |
| DOI: | 10.1063/1.4971801 |
| ORCIDs: | Esposito, Vincenzo , Pryds, Nini and 0000-0001-6805-1232 |
