GDC (55 wt%) Electrolyte Slurry for Intermediate Temperature SOFC/SOEC, 100 g/bottle, CITSOFECESGDC
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In the manufacturing of Solid Oxide Fuel Cells (SOFC) and Electrolysis Cells (SOEC), a GDC (Gadolinium-Doped Ceria) slurry is a suspension of GDC powder in an organic or aqueous vehicle. Depending on its formulation, it is used to create the main electrolyte for intermediate-temperature cells or a dense barrier layer to prevent chemical reactions between YSZ and cobalt-based cathodes. GDC slurries are particularly sensitive to processing because Ceria-based materials are notoriously difficult to densify at temperatures below 1400 °C without specific additives. The "recipe" for a GDC slurry changes drastically depending on whether you are using Tape Casting (to make a support) or Screen Printing (to make a thin film).
When using LSCF or LSC cathodes on a YSZ electrolyte, a GDC slurry is highly recommended to build a buffer layer. (2) "Strontium Trap": Without this GDC layer, Strontium from the cathode reacts with the YSZ electrolyte to form SrZrO3, an insulator that kills cell performance. (2) Slurry Density: The barrier layer slurry must be formulated to be perfectly dense. Any porosity in this layer allows the Strontium to "leak" through and react with the YSZ.
| Part Number |
CITSOFECESGDC (C-ITSOFEC-ES-GDC) |
| Active Material in Slurry |
(1) GDC10: (Gd0.10Ce0.90)O1.95 (2) GDC20: (Gd0.20Ce0.80)O1.95 |
| Solid-State Content |
55 wt% |
| Package Grade |
100 g/bottle (other grades, such as 500 g, and 1000 g or larger can be supplied upon request) |
References:
- S. J. Kim, et al.,Effect of Ce0.43Zr0.43Gd0.1Y0.04O2−δ contact layer on stability of interface between GDC interlayer and YSZ electrolyte in solid oxide electrolysis cell, J. Power Source, 2015, 284, 617-622.
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H. Fan, et al., Electrochemical performance and stability of lanthanum strontium cobalt ferrite oxygen electrode with gadolinia doped ceria barrier layer for reversible solid oxide fuel cell, J. Power Sources, 2014, 268, 634-639.