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RESEARCH PRODUCT
Effect of coatings on long term behaviour of a commercial stainless steel for solid oxide electrolyser cell interconnect application in H2 /H2O atmosphere
I. PopaSébastien ChevalierFrederic PerryRichard LaucournetPauline GirardonClara DesgrangesMaria Rosa ArdigoAude Brevetsubject
ElectrolysisMaterials scienceHydrogenRenewable Energy Sustainability and the EnvironmentSpinelMetallurgyOxideEnergy Engineering and Power Technologychemistry.chemical_elementSolid oxide electrolyser cellengineering.materialCondensed Matter Physicslaw.inventionHigh temperature electrolysis Hydrogen Interconnects Ferritic steels Perovskite and spinel coatingschemistry.chemical_compoundFuel TechnologychemistryHigh-temperature electrolysislawengineering[PHYS.PHYS.PHYS-CHEM-PH]Physics [physics]/Physics [physics]/Chemical Physics [physics.chem-ph]Hydrogen productionPerovskite (structure)description
Abstract K41X (AISI 441) stainless steel evidenced a high electrical conductivity after 3000 h ageing in H 2 /H 2 O side when used as interconnect for solid oxide electrolyser cells (SOEC) working at 800 °C. Perovskite (La 1 − x Sr x MnO 3 − δ ) and spinel (Co 3 O 4 ) oxides coatings were applied on the surface of the ferritic steel for ageing at 800 °C for 3000 h. Both coatings improved the behaviour of the steel and give interesting opportunities to use the K41X steel as interconnect for hydrogen production via high temperature steam electrolysis. Co 3 O 4 reduced into Co leading to a very good Area Specific Resistance (ASR) parameter, 0.038 Ω cm 2 . Despite a good ASR (0.06 Ω cm 2 ), La 1 − x Sr x MnO 3 − δ was less promising because it partially decomposed into MnO and La 2 O 3 during ageing in H 2 /H 2 O atmosphere.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2014-12-01 |