Full metadata record
DC Field | Value | Language |
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dc.contributor.author | Yun, Byung-Hyun | ko |
dc.contributor.author | Kim, Kyeong Joon | ko |
dc.contributor.author | Joh, Dong Woo | ko |
dc.contributor.author | Chae, Munseok S. | ko |
dc.contributor.author | Lee, Jong Jun | ko |
dc.contributor.author | Kim, Dae-Won | ko |
dc.contributor.author | Kang, Seokbeom | ko |
dc.contributor.author | Choi, Doyoung | ko |
dc.contributor.author | Hong, Seung-Tae | ko |
dc.contributor.author | Lee, Kang Taek | ko |
dc.date.accessioned | 2019-10-29T06:14:19Z | - |
dc.date.available | 2019-10-29T06:14:19Z | - |
dc.date.created | 2019-10-09 | - |
dc.date.issued | 2019-09 | - |
dc.identifier.citation | Journal of Materials Chemistry A, v.7, no.36, pp.20558 - 20566 | - |
dc.identifier.issn | 2050-7488 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.11750/10842 | - |
dc.description.abstract | Sluggish reaction kinetics on oxygen electrodes at reduced temperatures (<750 °C) remain a major challenge for the technical progress of reversible solid oxide cells (SOCs). To overcome this issue, the development of highly active and stable oxygen electrodes at intermediate temperatures (ITs, <750 °C) is urgent and essential. Rare earth-stabilized bismuth oxides are known to have high ionic conductivity and fast oxygen surface kinetics. Despite these advantageous properties, unlike conventional zirconia- or ceria-based materials, stabilized bismuth oxides have not been widely investigated as oxygen electrode components for reversible SOC applications. Herein, using the double doping strategy, we successfully developed Dy and Y co-doped Bi2O3 (DYSB), which showed record-high conductivity, ∼110 times higher than that of yttria-stabilized zirconia (YSZ) at ITs. This DYSB combined with conventional La0.8Sr0.2MnO3-δ (LSM) significantly enhanced surface diffusion and incorporation of oxygen ion kinetics during the oxygen reduction reaction (ORR). Finally, the novel LSM-DYSB oxygen electrode was simply embedded in a YSZ electrolyte-based cell without a buffer layer. The LSM-DYSB SOC yielded an extremely high performance of 2.23 W cm-2 in fuel cell mode as well as 1.32 A cm-2 at 1.3 V in electrolysis mode at 700 °C, along with excellent long-term and reversible stabilities. This study demonstrates that the novel DYSB-based electrode has great potential as a high-performance oxygen electrode for next generation SOCs and provides new insight into rational design and material selection for solid state energy conversion and storage applications. © 2019 The Royal Society of Chemistry. | - |
dc.language | English | - |
dc.publisher | Royal Society of Chemistry | - |
dc.title | Highly active and durable double-doped bismuth oxide-based oxygen electrodes for reversible solid oxide cells at reduced temperatures | - |
dc.type | Article | - |
dc.identifier.doi | 10.1039/c9ta09203j | - |
dc.identifier.wosid | 000488618600006 | - |
dc.identifier.scopusid | 2-s2.0-85072395425 | - |
dc.type.local | Article(Overseas) | - |
dc.type.rims | ART | - |
dc.description.journalClass | 1 | - |
dc.identifier.citationVolume | 7 | - |
dc.identifier.citationNumber | 36 | - |
dc.identifier.citationStartPage | 20558 | - |
dc.identifier.citationEndPage | 20566 | - |
dc.identifier.citationTitle | Journal of Materials Chemistry A | - |
dc.type.journalArticle | Article | - |
dc.description.isOpenAccess | N | - |
dc.subject.keywordPlus | HIGH-PERFORMANCE | - |
dc.subject.keywordPlus | FUEL-CELLS | - |
dc.subject.keywordPlus | ELECTROCHEMICAL PERFORMANCE | - |
dc.subject.keywordPlus | REDUCTION REACTION | - |
dc.subject.keywordPlus | ELECTROLYSIS CELL | - |
dc.subject.keywordPlus | CATHODE | - |
dc.subject.keywordPlus | PEROVSKITE | - |
dc.subject.keywordPlus | STABILITY | - |
dc.subject.keywordPlus | HYDROGEN | - |
dc.contributor.affiliatedAuthor | Hong, Seung-Tae | - |
dc.contributor.affiliatedAuthor | Lee, Kang Taek | - |
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