Stabilization of oxygen vacancy ordering and electrochemical-proton-insertion-and-extraction-induced large resistance modulation in strontium iron cobalt oxides Sr(Fe,Co)O y
Abstract Electrochemically inserting and extracting hydrogen into and from solids are promising ways to explore materials’ phases and properties. However, it is still challenging to identify the structural factors that promote hydrogen insertion and extraction and to develop materials whose function...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-01-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-024-55517-y |
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| author | Yosuke Isoda Thanh Ngoc Pham Ryotaro Aso Shuri Nakamizo Takuya Majima Saburo Hosokawa Kiyofumi Nitta Yoshitada Morikawa Yuichi Shimakawa Daisuke Kan |
| author_facet | Yosuke Isoda Thanh Ngoc Pham Ryotaro Aso Shuri Nakamizo Takuya Majima Saburo Hosokawa Kiyofumi Nitta Yoshitada Morikawa Yuichi Shimakawa Daisuke Kan |
| author_sort | Yosuke Isoda |
| collection | DOAJ |
| description | Abstract Electrochemically inserting and extracting hydrogen into and from solids are promising ways to explore materials’ phases and properties. However, it is still challenging to identify the structural factors that promote hydrogen insertion and extraction and to develop materials whose functional properties can be largely modulated by inserting and extracting hydrogen through solid-state reactions at room temperature. In this study, guided by theoretical calculations on the energies of oxygen reduction and hydrogen insertion reactions with oxygen-deficient perovskite oxides, we demonstrated that the oxygen vacancy ordering in Sr(Fe1−x Co x )O y (SFCO) epitaxial films can be stabilized by increasing the Co content (x ≥ 0.3) and revealed that it plays a key role in promoting proton accommodation into the SFCO lattice. We also show that the electrical resistance of SFCO films can be reversibly modulated by electrochemical proton insertion and extraction, and the modulation exceeds three orders of magnitude for Sr(Fe0.5Co0.5)O2.5 epitaxial films. Our results provide guidelines for controlling material properties through the insertion and extraction of hydrogen and for designing and exploring hydrogen-insertion materials. |
| format | Article |
| id | doaj-art-6f0ce2282e294e0e9581ac1e9e9d69d8 |
| institution | Kabale University |
| issn | 2041-1723 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-6f0ce2282e294e0e9581ac1e9e9d69d82025-01-05T12:41:12ZengNature PortfolioNature Communications2041-17232025-01-011611910.1038/s41467-024-55517-yStabilization of oxygen vacancy ordering and electrochemical-proton-insertion-and-extraction-induced large resistance modulation in strontium iron cobalt oxides Sr(Fe,Co)O yYosuke Isoda0Thanh Ngoc Pham1Ryotaro Aso2Shuri Nakamizo3Takuya Majima4Saburo Hosokawa5Kiyofumi Nitta6Yoshitada Morikawa7Yuichi Shimakawa8Daisuke Kan9Institute for Chemical Research, Kyoto UniversityDepartment of Precision Engineering, Graduate School of Engineering, Osaka UniversityDepartment of Applied Quantum Physics and Nuclear Engineering, Kyushu UniversityDepartment of Nuclear Engineering, Kyoto UniversityDepartment of Nuclear Engineering, Kyoto UniversityFaculty of Materials Science and Engineering, Kyoto Institute of TechnologyJapan Synchrotron Radiation Research Institute, SPring-8, SayoDepartment of Precision Engineering, Graduate School of Engineering, Osaka UniversityInstitute for Chemical Research, Kyoto UniversityInstitute for Chemical Research, Kyoto UniversityAbstract Electrochemically inserting and extracting hydrogen into and from solids are promising ways to explore materials’ phases and properties. However, it is still challenging to identify the structural factors that promote hydrogen insertion and extraction and to develop materials whose functional properties can be largely modulated by inserting and extracting hydrogen through solid-state reactions at room temperature. In this study, guided by theoretical calculations on the energies of oxygen reduction and hydrogen insertion reactions with oxygen-deficient perovskite oxides, we demonstrated that the oxygen vacancy ordering in Sr(Fe1−x Co x )O y (SFCO) epitaxial films can be stabilized by increasing the Co content (x ≥ 0.3) and revealed that it plays a key role in promoting proton accommodation into the SFCO lattice. We also show that the electrical resistance of SFCO films can be reversibly modulated by electrochemical proton insertion and extraction, and the modulation exceeds three orders of magnitude for Sr(Fe0.5Co0.5)O2.5 epitaxial films. Our results provide guidelines for controlling material properties through the insertion and extraction of hydrogen and for designing and exploring hydrogen-insertion materials.https://doi.org/10.1038/s41467-024-55517-y |
| spellingShingle | Yosuke Isoda Thanh Ngoc Pham Ryotaro Aso Shuri Nakamizo Takuya Majima Saburo Hosokawa Kiyofumi Nitta Yoshitada Morikawa Yuichi Shimakawa Daisuke Kan Stabilization of oxygen vacancy ordering and electrochemical-proton-insertion-and-extraction-induced large resistance modulation in strontium iron cobalt oxides Sr(Fe,Co)O y Nature Communications |
| title | Stabilization of oxygen vacancy ordering and electrochemical-proton-insertion-and-extraction-induced large resistance modulation in strontium iron cobalt oxides Sr(Fe,Co)O y |
| title_full | Stabilization of oxygen vacancy ordering and electrochemical-proton-insertion-and-extraction-induced large resistance modulation in strontium iron cobalt oxides Sr(Fe,Co)O y |
| title_fullStr | Stabilization of oxygen vacancy ordering and electrochemical-proton-insertion-and-extraction-induced large resistance modulation in strontium iron cobalt oxides Sr(Fe,Co)O y |
| title_full_unstemmed | Stabilization of oxygen vacancy ordering and electrochemical-proton-insertion-and-extraction-induced large resistance modulation in strontium iron cobalt oxides Sr(Fe,Co)O y |
| title_short | Stabilization of oxygen vacancy ordering and electrochemical-proton-insertion-and-extraction-induced large resistance modulation in strontium iron cobalt oxides Sr(Fe,Co)O y |
| title_sort | stabilization of oxygen vacancy ordering and electrochemical proton insertion and extraction induced large resistance modulation in strontium iron cobalt oxides sr fe co o y |
| url | https://doi.org/10.1038/s41467-024-55517-y |
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