Full metadata record
DC Field | Value | Language |
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dc.citation.number | 1 | - |
dc.citation.startPage | 5822 | - |
dc.citation.title | NATURE COMMUNICATIONS | - |
dc.citation.volume | 14 | - |
dc.contributor.author | Kim, Changmin | - |
dc.contributor.author | Park, Sung O. | - |
dc.contributor.author | Kwak, Sang Kyu | - |
dc.contributor.author | Xia, Zhenhai | - |
dc.contributor.author | Kim, Guntae | - |
dc.contributor.author | Dai, Liming | - |
dc.date.accessioned | 2024-01-19T12:05:28Z | - |
dc.date.available | 2024-01-19T12:05:28Z | - |
dc.date.created | 2024-01-18 | - |
dc.date.issued | 2023-09 | - |
dc.description.abstract | Electrosynthesis of hydrogen peroxide via selective two-electron transfer oxygen reduction or water oxidation reactions offers a cleaner, cost-effective alternative to anthraquinone processes. However, it remains a challenge to achieve high Faradaic efficiencies at elevated current densities. Herein, we report that oxygen-deficient Pr1.0Sr1.0Fe0.75Zn0.25O4-delta perovskite oxides rich of oxygen vacancies can favorably bind the reaction intermediates to facilitate selective and efficient two-electron transfer pathways. These oxides exhibited superior Faradic efficiencies (similar to 99%) for oxygen reduction over a wide potential range (0.05 to 0.45 V versus reversible hydrogen electrode) and current densities surpassing 50 mA cm(-2) under high ionic strengths. We further found that the oxides perform a high selectivity (similar to 80%) for two-electron transfer water oxidation reaction at a low overpotential (0.39 V). Lastly, we devised a membrane-free electrolyser employing bifunctional electrocatalysts, achieving a record-high Faradaic efficiency of 163.0% at 2.10 V and 50 mA cm(-2). This marks the first report of the concurrent oxygen reduction and water oxidation catalysed by efficient bifunctional oxides in a novel membrane-free electrolyser for scalable hydrogen peroxide electrosynthesis. | - |
dc.identifier.bibliographicCitation | NATURE COMMUNICATIONS, v.14, no.1, pp.5822 | - |
dc.identifier.doi | 10.1038/s41467-023-41397-1 | - |
dc.identifier.issn | 2041-1723 | - |
dc.identifier.scopusid | 2-s2.0-85171812248 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/68070 | - |
dc.identifier.wosid | 001149254400013 | - |
dc.language | 영어 | - |
dc.publisher | NATURE PORTFOLIO | - |
dc.title | Concurrent oxygen reduction and water oxidation at high ionic strength for scalable electrosynthesis of hydrogen peroxide | - |
dc.type | Article | - |
dc.description.isOpenAccess | TRUE | - |
dc.relation.journalWebOfScienceCategory | Multidisciplinary Sciences | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics | - |
dc.type.docType | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordPlus | ELECTROCHEMICAL SYNTHESIS | - |
dc.subject.keywordPlus | H2O2 | - |
dc.subject.keywordPlus | ELECTROCATALYST | - |
dc.subject.keywordPlus | SELECTIVITY | - |
dc.subject.keywordPlus | PEROVSKITES | - |
dc.subject.keywordPlus | OXIDE | - |
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