The effects of doping a trace of Fe2O3 on the structural and electrical properties of 8 mol% yttria-stabilized zirconia (8YSZ) are investigated. The 8YSZ electrolytes doped with various Fe2O3 contents are applied to a solid oxide fuel cell to confirm whether it is positive or negative for SOFC performances. In this study, the 8YSZ electrolyte with a trace of Fe2O3 shows the increased oxygen vacancies and better ionic conductivity. The optimum Fe2O3 doping content is 500 ppm at a sintering temperature of 1400 °C. The 8YSZ electrolyte doped with 500 ppm Fe2O3 shows 0.122 S cm−1 and 0.598 W cm−2 at 800 °C in the ionic conductivity and maximum power density, respectively. The power density of the cell based on the 8YSZ electrolyte doped with 500 ppm Fe2O3 is about 1.5 times higher than the cell using the pristine 8YSZ electrolyte. Thus, the introduction of a trace of Fe2O3 to the 8YSZ can improve its structural and electrical properties and finally SOFC performances.
|Number of pages||7|
|Journal||Journal of Materials Science: Materials in Electronics|
|Publication status||Published - 2022 Feb|
Bibliographical noteFunding Information:
This work was supported by National Research Foundation of Korea (NRF) grant funded by Korea government (MSIT) (No. 2021R1A2C2092130). This research was supported by the National Research Council of Science & Technology(NST) grant by the Korea government (MSIT) (No. CPS21131-100). This research was supported by Materials, Components & Equipment Research Program funded by the Gyeonggi Province.
© 2022, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics
- Electrical and Electronic Engineering