Generalized Ellingham diagrams for utilization in solid oxide fuel cells
Generalized Ellingham diagram for the P-O-H and the Ni-P-OH systems have been constructed to investigate thermodynamically the chemical stability of nickel anode against the gaseous impurities containing phosphorous compounds. In the same way as the original Ellingham diagram, the oxygen potential i...
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| Format: | Article |
| Language: | English |
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University of Belgrade, Technical Faculty, Bor
2008-01-01
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| Series: | Journal of Mining and Metallurgy. Section B: Metallurgy |
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| Online Access: | http://www.doiserbia.nb.rs/img/doi/1450-5339/2008/1450-53390801039K.pdf |
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| author | Kishimoto H. Yamaji K. Brito M.E. Horita T. Yokokawa H. |
| author_facet | Kishimoto H. Yamaji K. Brito M.E. Horita T. Yokokawa H. |
| author_sort | Kishimoto H. |
| collection | DOAJ |
| description | Generalized Ellingham diagram for the P-O-H and the Ni-P-OH systems have been constructed to investigate thermodynamically the chemical stability of nickel anode against the gaseous impurities containing phosphorous compounds. In the same way as the original Ellingham diagram, the oxygen potential is used as the vertical axis, while the temperature is adopted as horizontal axis. For the P-O-H system which contains many gaseous species, the dominant areas of gaseous species are displayed with a parameter of their partial pressure in an analogous way to the aqueous species in the Pourbaix diagram. The multicomponent Ellingham diagram for the Ni-P-O-H system was constructed in a similar manner to the multicomponent Pourbaix diagram. The obtained diagrams have been discussed to examine the reactivity of nickel anodes with phosphorus compounds in SOFCs in terms of operational variables such as temperature, oxygen potential, overpotential under the anode polarization and so on. |
| format | Article |
| id | doaj-art-cafb0cdde5de45db8863b3a50dfa2ddd |
| institution | Kabale University |
| issn | 1450-5339 |
| language | English |
| publishDate | 2008-01-01 |
| publisher | University of Belgrade, Technical Faculty, Bor |
| record_format | Article |
| series | Journal of Mining and Metallurgy. Section B: Metallurgy |
| spelling | doaj-art-cafb0cdde5de45db8863b3a50dfa2ddd2025-02-02T14:13:36ZengUniversity of Belgrade, Technical Faculty, BorJournal of Mining and Metallurgy. Section B: Metallurgy1450-53392008-01-01441394810.2298/JMMB0801039KGeneralized Ellingham diagrams for utilization in solid oxide fuel cellsKishimoto H.Yamaji K.Brito M.E.Horita T.Yokokawa H.Generalized Ellingham diagram for the P-O-H and the Ni-P-OH systems have been constructed to investigate thermodynamically the chemical stability of nickel anode against the gaseous impurities containing phosphorous compounds. In the same way as the original Ellingham diagram, the oxygen potential is used as the vertical axis, while the temperature is adopted as horizontal axis. For the P-O-H system which contains many gaseous species, the dominant areas of gaseous species are displayed with a parameter of their partial pressure in an analogous way to the aqueous species in the Pourbaix diagram. The multicomponent Ellingham diagram for the Ni-P-O-H system was constructed in a similar manner to the multicomponent Pourbaix diagram. The obtained diagrams have been discussed to examine the reactivity of nickel anodes with phosphorus compounds in SOFCs in terms of operational variables such as temperature, oxygen potential, overpotential under the anode polarization and so on.http://www.doiserbia.nb.rs/img/doi/1450-5339/2008/1450-53390801039K.pdfsolid oxide fuel cellsSOFCNi anodephosphor poisoningNi-P-O systemNI-P-OH systemnickel phosphatesPourbaix diagramEllingham diagram |
| spellingShingle | Kishimoto H. Yamaji K. Brito M.E. Horita T. Yokokawa H. Generalized Ellingham diagrams for utilization in solid oxide fuel cells Journal of Mining and Metallurgy. Section B: Metallurgy solid oxide fuel cells SOFC Ni anode phosphor poisoning Ni-P-O system NI-P-OH system nickel phosphates Pourbaix diagram Ellingham diagram |
| title | Generalized Ellingham diagrams for utilization in solid oxide fuel cells |
| title_full | Generalized Ellingham diagrams for utilization in solid oxide fuel cells |
| title_fullStr | Generalized Ellingham diagrams for utilization in solid oxide fuel cells |
| title_full_unstemmed | Generalized Ellingham diagrams for utilization in solid oxide fuel cells |
| title_short | Generalized Ellingham diagrams for utilization in solid oxide fuel cells |
| title_sort | generalized ellingham diagrams for utilization in solid oxide fuel cells |
| topic | solid oxide fuel cells SOFC Ni anode phosphor poisoning Ni-P-O system NI-P-OH system nickel phosphates Pourbaix diagram Ellingham diagram |
| url | http://www.doiserbia.nb.rs/img/doi/1450-5339/2008/1450-53390801039K.pdf |
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