Formulation of spinel based inkjet inks for protective layer coatings in SOFC interconnects

Abstract

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Advances in Inkjet‐Printed Solid Oxide Fuel Cells

“…A notable example is the report of Pandiyan et al., who recently reported on the inkjet printing of spinel‐based protective layer coatings for SOFC interconnects, using water‐based inks. [ 165 ] Although it is of high interest, discussion of such reports goes beyond the scope of this review, thus readers are encouraged to refer to the original publication for details. Another thing that is prevalent from state‐of‐the‐art on inkjet‐printed SOFCs is that literature is mostly limited to oxygen conducting SOFCs, and rarely expands on proton conducting SOFCs, which were also deemed to be beyond the scope of this review.…”

The Coating Effect on Interconnect Materials After >10 Years of Furnace Exposures

“…A common mitigation for the different degradation mechanisms is to apply a protective coating on the interconnect where spinel type coatings are one of the most common coatings for mitigation of chromium evaporation as they also exhibit a good conductivity. A typical spinel coating is (MnCo)3O4 and it can be deposited directly using e.g., spray coating (4) or inkjet printing (5). It can however also be realized through deposition of metallic cobalt which can be subjected to an elevated temperature in an oxidizing atmosphere whereafter oxidation to Co3O4 occurs followed by outward diffusion of Mn from the steel during operation.…”

Optimization of Polarization Resistance of (Cu,Mn)3O4 as Cathode Current‐Collecting Layer for Solid Oxide Fuel Cells

“…The advantage of ink lies in its convenient storage and application. [ 19,20 ] Especially through the screen printing, [ 21 ] chemical vapor deposition (CVD), [ 22 ] plasma spraying, [ 23 ] and other technologies, the CCCL can be attached to the cathode in a controllable manner. The operating process can control the thickness of the CCCL, which makes use of the various components of the industrial batch preparation stack.…”