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DC Field | Value | Language |
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dc.citation.startPage | 227812 | - |
dc.citation.title | JOURNAL OF POWER SOURCES | - |
dc.citation.volume | 451 | - |
dc.contributor.author | Bu, Yunfei | - |
dc.contributor.author | Joo, Sangwook | - |
dc.contributor.author | Zhang, Yanxiang | - |
dc.contributor.author | Wang, Yifan | - |
dc.contributor.author | Meng, Dandan | - |
dc.contributor.author | Ge, Xinlei | - |
dc.contributor.author | Kim, Guntae | - |
dc.date.accessioned | 2023-12-21T17:48:25Z | - |
dc.date.available | 2023-12-21T17:48:25Z | - |
dc.date.created | 2020-04-03 | - |
dc.date.issued | 2020-03 | - |
dc.description.abstract | To develop highly efficient cathode materials can accelerate the commercial application of proton conducting solid oxide fuel cells (PCFCs). In this study, we fabricated highly efficient triple-conducting composite oxides using single- and double-layered perovskites. Compared to the cell performance of single- and double-layered perovskites, these triple-conducting composite oxides have better oxygen reduction capabilities and a robust structure showing a peak power density of 1.57 W cm(-2) and an ASR of 0.021 Omega cm(2) at 750 degrees C. No phase reactions or structural changes were found between the Sm0.5Sr0.5CoO3-delta (SSC) and the SmBaCo2O5+delta (SBC) composites, as detected through in-situ high temperature X-ray diffraction (XRD) and high resolution transmission electron microscopy (HR-TEM) techniques. Density functional theory (DFT) calculations revealed that the interfacial electron transfers and redistributions between SSC and SBC were beneficial for electron-hole separation. Therefore, such bond destabilization inevitably increased the energy of the occupied pi* orbitals originating from the surface-peroxo species in the tensile-strained interface, enhancing the bulk and surface diffusivities of the oxide ions to improve oxygen reduction reactions. This work provides a simple yet easily replicable method for designing more efficient and stable catalysts for use in PCFC applications. | - |
dc.identifier.bibliographicCitation | JOURNAL OF POWER SOURCES, v.451, pp.227812 | - |
dc.identifier.doi | 10.1016/j.jpowsour.2020.227812 | - |
dc.identifier.issn | 0378-7753 | - |
dc.identifier.scopusid | 2-s2.0-85078668438 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/49132 | - |
dc.identifier.url | https://www.sciencedirect.com/science/article/pii/S0378775320301154?via%3Dihub | - |
dc.identifier.wosid | 000518874300071 | - |
dc.language | 영어 | - |
dc.publisher | ELSEVIER | - |
dc.title | A highly efficient composite cathode for proton-conducting solid oxide fuel cells | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials Science, Multidisciplinary | - |
dc.relation.journalResearchArea | Chemistry; Electrochemistry; Energy & Fuels; Materials Science | - |
dc.type.docType | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordPlus | OXYGEN REDUCTION | - |
dc.subject.keywordPlus | ANODE MATERIAL | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | NANOPARTICLES | - |
dc.subject.keywordPlus | TEMPERATURE | - |
dc.subject.keywordPlus | CATALYST | - |
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