SDC (Sm0.2Ce0.8O1.9) Powder as Oxygen-Conducting Electrolyte for Intermediate Temperature SOFC/SOEC, 100 g/bottle, CITSOFECOCESDC
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In both Solid Oxide Fuel Cells (SOFC) and Solid Oxide Electrolysis Cells (SOEC), SDC (Samarium-Doped Ceria) is a high-performance electrolyte and electrode component specifically designed for Intermediate and Low-Temperature operation (450°C–650°C). Formulated as Ce(1-x)SmxO(2-x) (typically SDC20, where x=0.2), it is widely considered the superior version of GDC (Gadolinium-Doped Ceria) for maximizing ionic conductivity at the lower end of the thermal spectrum.
SDC offers the highest ionic conductivity among the ceria-based electrolytes. (1) Lattice Matching: The ionic radius of Sm^{3+} ($1.079 Å) is the closest match to Ce^{4+} (0.97 Å) among all rare-earth dopants. This minimize the "elastic strain" in the crystal lattice. (2) Low Association Energy: Because the strain is minimized, the energy required for an oxygen ion to "break away" from a vacancy and hop to the next site is very low. (3) Performance: At 600°C, SDC provides significantly lower ohmic resistance than YSZ, enabling higher power densities without the need for extreme heat.
| Part Number |
CITSOFECOCESDC (C-ITSOFEC-OCE-SDC) |
| Purity |
≥99.9% |
| Chemical Formula |
SDC20: Sm0.2Ce0.8O1.9 Other chemical formula with various customized ratios can be supplied upon request |
| PSD (D50) |
0.4-0.7 um |
| Surface Area |
~13.8 m2/g |
| Package Grade |
100 g/bottle (other grades, such as 500 g, 1000 g or larger can be supplied upon request) |
References:
- M. Liu, et al., An Efficient SOFC Based on Samaria-Doped Ceria (SDC) Electrolyte, J. Electrochem. Soc., 2012, 159, B661.
- K. Shimura, et al., Effect of samaria-doped ceria (SDC) interlayer on the performance of La0.6Sr0.4Co0.2Fe0.8O3-δ/SDC composite oxygen electrode for reversible solid oxide fuel cells, Electrochimica Acta, 2017, 225, 114-120.