Electrochemical Reduction of Oxygen and Nitric Oxide on Mn-Based Perovskites with Different A-Site Cations
Four LnMnO3+δ (Ln = La, Pr, Sm, and Gd) perovskites were synthesized and characterized by powder XRD. It was shown that the perovskite lattice became more and more distorted when lowering the size of the A-site cation. The manganite-based perovskites were evaluated for the ability to electrochemical...
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| Format: | Article |
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Wiley
2020-01-01
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| Series: | International Journal of Electrochemistry |
| Online Access: | http://dx.doi.org/10.1155/2020/4013697 |
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| author | K. Kammer Hansen |
| author_facet | K. Kammer Hansen |
| author_sort | K. Kammer Hansen |
| collection | DOAJ |
| description | Four LnMnO3+δ (Ln = La, Pr, Sm, and Gd) perovskites were synthesized and characterized by powder XRD. It was shown that the perovskite lattice became more and more distorted when lowering the size of the A-site cation. The manganite-based perovskites were evaluated for the ability to electrochemically reduce oxygen and nitric oxide in the temperature range of 200 to 400°C. At the lowest temperature, the electrodes were better at reducing nitric oxide than oxygen. At higher temperatures, the activity for the reduction of oxygen and nitric oxide became similar. The activation energies for the reduction of oxygen and nitric oxide were markedly different for LaMnO3+δ and PrMnO3+δ whereas it was similar for SmMnO3+δ and GdMnO3+δ. |
| format | Article |
| id | doaj-art-bbc2905746cc482b926d9c6ef65d304a |
| institution | OA Journals |
| issn | 2090-3529 2090-3537 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Electrochemistry |
| spelling | doaj-art-bbc2905746cc482b926d9c6ef65d304a2025-08-20T02:18:42ZengWileyInternational Journal of Electrochemistry2090-35292090-35372020-01-01202010.1155/2020/40136974013697Electrochemical Reduction of Oxygen and Nitric Oxide on Mn-Based Perovskites with Different A-Site CationsK. Kammer Hansen0Department of Energy Conversion and Storage, Technical University of Denmark, DK-2800, Lyngby, DenmarkFour LnMnO3+δ (Ln = La, Pr, Sm, and Gd) perovskites were synthesized and characterized by powder XRD. It was shown that the perovskite lattice became more and more distorted when lowering the size of the A-site cation. The manganite-based perovskites were evaluated for the ability to electrochemically reduce oxygen and nitric oxide in the temperature range of 200 to 400°C. At the lowest temperature, the electrodes were better at reducing nitric oxide than oxygen. At higher temperatures, the activity for the reduction of oxygen and nitric oxide became similar. The activation energies for the reduction of oxygen and nitric oxide were markedly different for LaMnO3+δ and PrMnO3+δ whereas it was similar for SmMnO3+δ and GdMnO3+δ.http://dx.doi.org/10.1155/2020/4013697 |
| spellingShingle | K. Kammer Hansen Electrochemical Reduction of Oxygen and Nitric Oxide on Mn-Based Perovskites with Different A-Site Cations International Journal of Electrochemistry |
| title | Electrochemical Reduction of Oxygen and Nitric Oxide on Mn-Based Perovskites with Different A-Site Cations |
| title_full | Electrochemical Reduction of Oxygen and Nitric Oxide on Mn-Based Perovskites with Different A-Site Cations |
| title_fullStr | Electrochemical Reduction of Oxygen and Nitric Oxide on Mn-Based Perovskites with Different A-Site Cations |
| title_full_unstemmed | Electrochemical Reduction of Oxygen and Nitric Oxide on Mn-Based Perovskites with Different A-Site Cations |
| title_short | Electrochemical Reduction of Oxygen and Nitric Oxide on Mn-Based Perovskites with Different A-Site Cations |
| title_sort | electrochemical reduction of oxygen and nitric oxide on mn based perovskites with different a site cations |
| url | http://dx.doi.org/10.1155/2020/4013697 |
| work_keys_str_mv | AT kkammerhansen electrochemicalreductionofoxygenandnitricoxideonmnbasedperovskiteswithdifferentasitecations |