Porous beta-MnO2 nanoplates derived from MnCO3 nanoplates as highly efficient electrocatalysts toward oxygen evolution reaction
DC Field | Value | Language |
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dc.contributor.author | Kim, Jun | - |
dc.contributor.author | Kim, Ju Seong | - |
dc.contributor.author | Baik, Hionsuck | - |
dc.contributor.author | Kang, Kisuk | - |
dc.contributor.author | Lee, Kwangyeol | - |
dc.date.accessioned | 2021-09-04T05:23:37Z | - |
dc.date.available | 2021-09-04T05:23:37Z | - |
dc.date.created | 2021-06-18 | - |
dc.date.issued | 2016 | - |
dc.identifier.issn | 2046-2069 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/90326 | - |
dc.description.abstract | beta-MnO2 has not been considered as an effective catalyst toward the oxygen evolution reaction due to its lack of active di-mu(2)-oxo bridged Mn centres and inaccessibility to the inner Mn atoms. We have envisioned that beta-MnO2 can be made catalytically active by making the inner Mn atoms accessible. In order to accomplish this, we have synthesized MnCO3 nanoplates via a solution route and converted them into highly porous beta-MnO2 nanoplates with very high surface area. In addition to the reduced overpotential of 450 mV at 10 mA cm(-2), the derived Tafel slope was 78.2 mV dec(-1), showing a superior catalytic activity of the porous nanoplate, which is comparable to the catalytic performance of best performing alpha-MnO2 phase. The importance of surface-bound catalytic Mn sites in highly porous beta-MnO2 nanoplates is also demonstrated by Au loading-induced blockage of them and corresponding catalytic activity deterioration. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.subject | ELECTROCHEMICAL WATER OXIDATION | - |
dc.subject | MANGANESE OXIDES | - |
dc.subject | MNO2 | - |
dc.subject | CATALYST | - |
dc.subject | GOLD | - |
dc.subject | PERFORMANCE | - |
dc.subject | REDUCTION | - |
dc.subject | VACANCIES | - |
dc.subject | HEMATITE | - |
dc.subject | FILMS | - |
dc.title | Porous beta-MnO2 nanoplates derived from MnCO3 nanoplates as highly efficient electrocatalysts toward oxygen evolution reaction | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Lee, Kwangyeol | - |
dc.identifier.doi | 10.1039/c6ra01091a | - |
dc.identifier.scopusid | 2-s2.0-84961180505 | - |
dc.identifier.wosid | 000372253700007 | - |
dc.identifier.bibliographicCitation | RSC ADVANCES, v.6, no.32, pp.26535 - 26539 | - |
dc.relation.isPartOf | RSC ADVANCES | - |
dc.citation.title | RSC ADVANCES | - |
dc.citation.volume | 6 | - |
dc.citation.number | 32 | - |
dc.citation.startPage | 26535 | - |
dc.citation.endPage | 26539 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Multidisciplinary | - |
dc.subject.keywordPlus | ELECTROCHEMICAL WATER OXIDATION | - |
dc.subject.keywordPlus | MANGANESE OXIDES | - |
dc.subject.keywordPlus | MNO2 | - |
dc.subject.keywordPlus | CATALYST | - |
dc.subject.keywordPlus | GOLD | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | REDUCTION | - |
dc.subject.keywordPlus | VACANCIES | - |
dc.subject.keywordPlus | HEMATITE | - |
dc.subject.keywordPlus | FILMS | - |
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