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US 2014/0272114 A1Published application
Abrasion Resistant Solid Oxide Fuel Cell Electrode Ink
AssigneeBloom Energy Corporation
InventorsChris Oriakhi, Andres Leming, Shailendra Parihar, Richard Stephenson, Emad El Batawi
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Abstract
A method for forming a solid oxide fuel cell (SOFC) includes co-firing the anode and cathode electrode layers, which involves placing an unfired anode onto a surface during the cathode print cycle. To avoid damage to the electrolyte and cathode production cycle by the green anode ink, an abrasion resistant ink is used to print the anode electrode layer.
Claims21
A method of making a solid oxide fuel cell (SOFC), comprising:
- forming a first electrode on a first side of a planar solid oxide electrolyte using an abrasion resistant ink;
- drying the first electrode;
- forming a second electrode on a second side of the solid oxide electrolyte prior to firing the first electrode;
- drying the second electrode;
- and
- firing the first and second electrodes during a single firing step.
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An abrasion resistant ink for making a solid oxide fuel cell anode electrode (SOFC), comprising:
- around 60-80 wt. % of a composite powder, wherein the composite powder comprises a metal phase and a ceramic phase;
- around 1-10 wt. % of a binder, wherein the binder comprises a polymer or polymer precursor;
- around 5-35% wt. % of an organic solvent;
- zero to less than 2 wt. % of a dispersant;
- and
- zero to less than 1 wt. % of a plasticizer.
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Dependencies are inferred from the claim text.