ESC - Electrolyte Supported Cells for stack construction
- SOFC Stack
A solid oxide fuel cell (SOFC) consists of an anode and a cathode separated by an electrolyte, which is conductive to oxygen ions but not to electrons. Typically the electrolyte material is a zirconia with different dopants. On the cathode side oxygen ions are formed by a catalytically reaction of oxygen with a supply of electrons. The oxygen ions diffuse through the electrolyte to the anode side, where they react with hydrogen to form water and deliver free electrons. An electrical potential difference is induced that may drive an electrical current. To reach a higher voltage several cells are connected in series in a so called stack - the current delivering assembly.
There are various cell designs for the SOFC. Beside anode supported cells (ASC) and metal supported cells (MSC) there are electrolyte supported cells (ESC) where the electrolyte is the supporting layer which KERAFOL produces.
For the cell production the following electrolyte substrates are available:
10Sc1CeSZ, 8YSZ, YScSZ and 3YSZ.
Cathode material: LaxSryMnO3
Anode material: NiO cermet
Our electrolyte supported cells are usable in mobile and stationary applications.
For stack application they:
- have efficient electrodes with low polarization resistances
- high ionic conductivity and power density
- high mechanical strength
- high planarity
- are long term stable
- stable during multiple reduction/oxidation cycles as well as thermo cycles
With the support of Fraunhofer Institute for Ceramic Technology and Systems a stack consisting of cells from KERAFOL was constructed and characterized. For more detailed information please have a look at the stack - report.
We offer cells in standard dimensions of 50x50x0.15 mm³ and 100x100x0.15 mm³ but also a variety
of squared, circular and rectangular geometries as our customers desire.
For further information please have a look at our product information sheet.