DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, Jun-Hyuk | - |
dc.contributor.author | Yun, Su-Won | - |
dc.contributor.author | Shim, Kyubin | - |
dc.contributor.author | You, Sang-Hoon | - |
dc.contributor.author | Jung, Sang-Mun | - |
dc.contributor.author | Kweon, Hyojin | - |
dc.contributor.author | Joo, Sang Hoon | - |
dc.contributor.author | Moon, Young Hoon | - |
dc.contributor.author | KIM, YONG TAE | - |
dc.date.accessioned | 2020-04-10T09:50:36Z | - |
dc.date.available | 2020-04-10T09:50:36Z | - |
dc.date.created | 2020-04-10 | - |
dc.date.issued | 2020-02 | - |
dc.identifier.issn | 2574-0962 | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/103086 | - |
dc.description.abstract | The unitized regenerative fuel cell (URFC) is a useful electrochemical energy conversion/storage device, in which catalysts for the dual-function (oxygen reduction reaction, ORR, and oxygen evolution reaction, OER) electrodes of URFCs must be operative over a wide range of potentials. Herein, we report a highly active and stable bifunctional electrocatalyst, a three-dimensionally interconnected nanoporous PtIr thin film (np-PtIr) for URFC, which was prepared by an electrochemical selective leaching of a less noble element, Os. The np-PtIr showed a much enhanced URFC performance, such as an about 21% and 485% higher round-trip efficiency than that of sole Pt and Ir, respectively, and much enhanced stability confirmed with the ICP-OES analyses. It was revealed from various electrochemical tests and XPS studies that the enhanced URFC performance of np-PtIr resulted from a significantly increased surface area due to the formation of a three-dimensionally interconnected nanoporous structure, as well as a minimization of the ohmic loss due to an inner metallic conduction paths. | - |
dc.language | English | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.relation.isPartOf | Acs Applied Energy Materials | - |
dc.title | Enhanced Activity and Stability of Nanoporous PtIr Electrocatalysts for Unitized Regenerative Fuel Cell | - |
dc.type | Article | - |
dc.identifier.doi | 10.1021/acsaem.9b01874 | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | Acs Applied Energy Materials, v.3, no.2, pp.1423 - 1428 | - |
dc.identifier.wosid | 000516665300022 | - |
dc.citation.endPage | 1428 | - |
dc.citation.number | 2 | - |
dc.citation.startPage | 1423 | - |
dc.citation.title | Acs Applied Energy Materials | - |
dc.citation.volume | 3 | - |
dc.contributor.affiliatedAuthor | You, Sang-Hoon | - |
dc.contributor.affiliatedAuthor | Jung, Sang-Mun | - |
dc.contributor.affiliatedAuthor | KIM, YONG TAE | - |
dc.identifier.scopusid | 2-s2.0-85078997807 | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | N | - |
dc.type.docType | Article | - |
dc.subject.keywordPlus | OXYGEN EVOLUTION REACTIONS | - |
dc.subject.keywordPlus | BIFUNCTIONAL ELECTROCATALYSTS | - |
dc.subject.keywordPlus | COMPOSITE ELECTRODE | - |
dc.subject.keywordPlus | REDUCTION | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordAuthor | unitized regenerative fuel cell | - |
dc.subject.keywordAuthor | nanoporous structure | - |
dc.subject.keywordAuthor | platinum | - |
dc.subject.keywordAuthor | iridium | - |
dc.subject.keywordAuthor | round-trip efficiency | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Energy & Fuels | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
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