Alternating-Current Electrophoretic Deposition of Spinel Coatings on Porous Metallic Substrates for Solid Oxide Fuel Cell Applications
| Autor: | Song Dong, A. Mohammed Hussain, Yosuke Fukuyama, Uday B. Pal, Soumendra N. Basu, Zhikuan Zhu, Srikanth Gopalan, Nilesh Dale |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Spinel 0211 other engineering and technologies General Engineering Oxide 02 engineering and technology engineering.material 021001 nanoscience & nanotechnology Cathode law.invention chemistry.chemical_compound Electrophoretic deposition chemistry Chemical engineering Coating law Electrode engineering General Materials Science Solid oxide fuel cell 0210 nano-technology Layer (electronics) 021102 mining & metallurgy |
| Zdroj: | JOM. 73:2764-2770 |
| ISSN: | 1543-1851 1047-4838 |
| Popis: | The performance of solid oxide fuel cells (SOFCs) can be degraded by “chromium poisoning” where thermally grown Cr2O3 on metallic surfaces forms volatile Cr-containing species that are redeposited on active regions of the cathode. This phenomenon is further exacerbated for porous metallic interconnects and metal-supported electrodes due to their large surface-to-volume ratios. In this study, electrophoretic deposition (EPD) of CuNi0.2Mn1.8O4 spinel powders on porous SUS430 metallic substrates using alternating current (AC) was explored. Two-step densification heat treatment was used to form a thin, uniform, protective spinel coating. The area-specific resistance (ASR) and weight gain were tracked during 100-h oxidation tests at 700°C in air. The results showed that, despite the considerable complexity of the sample shape, AC EPD was able to form a protective coating layer that significantly limited the growth rate of the thermally grown oxide (TGO) by reducing the kg value by a factor of 25. |
| Databáze: | OpenAIRE |
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