SSZ Electrolyte Pellet (Disk & Sheet) for SOFC/SOEC Test, CSOFECSSZEP
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In the testing of Solid Oxide Fuel Cells (SOFC) and Electrolysis Cells (SOEC), an SSZ (Scandia-Stabilized Zirconia) electrolyte pellet—often formulated as 10Sc1CeSZ (10 mol% Scandia, 1 mol% Ceria)—is the high-performance structural support for "button cells." Because SSZ has the highest ionic conductivity of all zirconia-based materials, these pellets are the preferred choice for researchers targeting Intermediate Temperature (IT) operation (600 °C–750 °C) without the electronic leakage issues associated with GDC.
For reliable laboratory testing, SSZ pellets must be fully dense to prevent gas crossover: (1) Composition: 10 mol% Sc2O3 stabilized ZrO2 is standard. 1 mol% CeO2 is usually added as a co-dopant to stabilize the cubic phase and prevent the rhombohedral phase transition during cooling. (2) Dimensions: Typically 20 mm or 25 mm in diameter. (3) Thickness: 150 um to 500 um (Electrolyte-supported cell configuration). (4) Ionic Conductivity: ~0.1 S/cm at 800 °C, which is significantly higher than 8YSZ (~0.04 S/cm).
For Button cell test, SSZ pellet acts as the backbone. Electrodes are applied to create the functional cell: (1) Anode (Fuel Side): Typically Ni-SSZ or Ni-GDC. If using Ni-SSZ, the thermal expansion is perfectly matched to the pellet. (2) Cathode (Air Side): High-activity materials like LSCF or LSC are common. It should be noted that while SSZ is more stable than YSZ, it is still recommended to use a thin GDC barrier layer if using Cobalt-rich cathodes to prevent the formation of resistive SrZrO3 or SrScOx phases at the interface. (3) Current Collection: Gold (Au) or Platinum (Pt) paste/mesh is used to collect the current from the electrodes.
| Part Number |
CSOFECSSZEP (C-SOFEC-SSZEP) |
| Active Powder |
SSZ: (Sc2O3)0.1(CeO2)0.01(ZrO2)0.89 |
| SSZ Pellet Size |
(1) Disk: D15 mm (T: ~10-15 um) (2) Disk: D20 mm (T: ~10-15um) (3) Sheet: 5cm * 5cm (T: ~10-15 um) (4) Sheet: 10cm * 10cm (T: ~10-15 um) |
| Package Grade |
1 pcs/pack (bulk quantity can be supplied upon request and certain discount will be applied) |
References:
- A. Mahmood, et al., High-performance solid oxide electrolysis cell based on ScSZ/GDC (scandia-stabilized zirconia/gadolinium-doped ceria) bi-layered electrolyte and LSCF (lanthanum strontium cobalt ferrite) oxygen electrode, Energy, 2015, 90, 344-350.
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M. Liu, et al., Investigation of (CeO2)x(Sc2O3)(0.11−x)(ZrO2)0.89 (x = 0.01–0.10) electrolyte materials for intermediate-temperature solid oxide fuel cell, J. Alloys Compounds, 2010, 502, 319-323.