Version 1
: Received: 2 December 2018 / Approved: 4 December 2018 / Online: 4 December 2018 (08:43:39 CET)
How to cite:
Hoo, Y.; Shi, Y.; Lu, W.. Effect of Y/Mg Ion Ratio and Phase Assemble on Ionic Conductivity of Multi-Doped Zirconia Ceramic Solid Electrolytes. Preprints2018, 2018120047 (doi: 10.20944/preprints201812.0047.v1).
Hoo, Y.; Shi, Y.; Lu, W.. Effect of Y/Mg Ion Ratio and Phase Assemble on Ionic Conductivity of Multi-Doped Zirconia Ceramic Solid Electrolytes. Preprints 2018, 2018120047 (doi: 10.20944/preprints201812.0047.v1).
Cite as:
Hoo, Y.; Shi, Y.; Lu, W.. Effect of Y/Mg Ion Ratio and Phase Assemble on Ionic Conductivity of Multi-Doped Zirconia Ceramic Solid Electrolytes. Preprints2018, 2018120047 (doi: 10.20944/preprints201812.0047.v1).
Hoo, Y.; Shi, Y.; Lu, W.. Effect of Y/Mg Ion Ratio and Phase Assemble on Ionic Conductivity of Multi-Doped Zirconia Ceramic Solid Electrolytes. Preprints 2018, 2018120047 (doi: 10.20944/preprints201812.0047.v1).
Abstract
The phase composition design principle is introduced to obtain balanced properties of ionic conductivity and thermo-tolerant for zirconia solid electrolytes used in solid oxide fuel cells (SOFCs). The zirconia ceramic solid electrolytes are fabricated by two-step free sintering. With increasing Y/Mg ionic ratio from 1.78:1 to 1.88:1, the content of monoclinic phase fluctuates little (±3%). The ionic conductivity, including the total electrical resistance; grain electrical resistance and grain boundary electrical resistance at 1223K, are all gradually declining with the increasing of Y/Mg ionic ratio. Furthermore, the enrichment of Mg ion in grain boundary acts as a disincentive to grain boundary ionic conductivity. In addition, the maximum total equivalent conductivity at 1223K in this study reaches to 0.143 Scm-1 which can compare with that of certain YSZ. It will be beneficial to SOFCs application profited from increasing ionic conductivity of ceramic solid electrolytes.
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
