Journal
APPLIED SURFACE SCIENCE
Volume 538, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.apsusc.2020.148105
Keywords
Solid oxide fuel cell; Anode; Co-sputtering; Methane oxidation; Ruthenium; Samaria-doped ceria
Categories
Funding
- Advanced Research Project - SeoulTech (Seoul National University of Science and Technology)
Ask authors/readers for more resources
The study introduces a gradient cermet anode for DM-SOFCs operated at 450 degrees C using co-sputtering method, which shows higher voltage and power density, better thermal stability, and improved coking resistance compared to homogeneous anode. The combination of high triple phase boundary density and percolating ceria network in the gradient cermet anode contributes to these enhancements in cell performance.
Direct methane-fueled solid oxide fuel cells (DM-SOFCs) are promising next-generation energy conversion devices, in which, however, anode reactions should be facilitated for high performance even at low temperature. Herein, we report on compositional gradient cermet anode for DM-SOFCs operated at 450 degrees C using co-sputtering method. The cell with the gradient cermet anode demonstrates approximately 0.1 V higher open-circuit voltage and 36% better power density than the cell with homogeneous one. Moreover, the thermal stability of the cell with the gradient cermet anode (3.7% h(-1) at 450 degrees C) is improved compared to the cell with homogeneous one (4.5% h(-1)). Higher coking resistance is also observed in the cell with the gradient cermet anode with low carbon content after operation. The combination of high triple phase boundary density preserved well at elevated temperature and percolating ceria network may be the reason for such improvements in the cell with the gradient cermet anode.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available