DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, Yong-Tae | ko |
dc.contributor.author | Lopes, Pietro Papa | ko |
dc.contributor.author | Park, Shin-Ae | ko |
dc.contributor.author | Lee, A-Yeong | ko |
dc.contributor.author | Lim, Jinkyu | ko |
dc.contributor.author | Lee, Hyunjoo | ko |
dc.contributor.author | Back, Seoin | ko |
dc.contributor.author | Jung, Yousung | ko |
dc.contributor.author | Danilovic, Nemanja | ko |
dc.contributor.author | Stamenkovic, Vojislav | ko |
dc.contributor.author | Erlebacher, Jonah | ko |
dc.contributor.author | Snyder, Joshua | ko |
dc.contributor.author | Markovic, Nenad M. | ko |
dc.date.accessioned | 2017-12-19T00:58:40Z | - |
dc.date.available | 2017-12-19T00:58:40Z | - |
dc.date.created | 2017-11-28 | - |
dc.date.created | 2017-11-28 | - |
dc.date.created | 2017-11-28 | - |
dc.date.issued | 2017-11 | - |
dc.identifier.citation | NATURE COMMUNICATIONS, v.8, pp.1449 | - |
dc.identifier.issn | 2041-1723 | - |
dc.identifier.uri | http://hdl.handle.net/10203/228451 | - |
dc.description.abstract | The selection of oxide materials for catalyzing the oxygen evolution reaction in acid-based electrolyzers must be guided by the proper balance between activity, stability and conductivity-a challenging mission of great importance for delivering affordable and environmentally friendly hydrogen. Here we report that the highly conductive nanoporous architecture of an iridium oxide shell on a metallic iridium core, formed through the fast dealloying of osmium from an Ir25Os75 alloy, exhibits an exceptional balance between oxygen evolution activity and stability as quantified by the activity-stability factor. On the basis of this metric, the nanoporous Ir/IrO2 morphology of dealloyed Ir25Os75 shows a factor of similar to 30 improvement in activity-stability factor relative to conventional iridium-based oxide materials, and an similar to 8 times improvement over dealloyed Ir25Os75 nanoparticles due to optimized stability and conductivity, respectively. We propose that the activity-stability factor is a key "metric" for determining the technological relevance of oxide-based anodic water electrolyzer catalysts. | - |
dc.language | English | - |
dc.publisher | NATURE PUBLISHING GROUP | - |
dc.title | Balancing activity, stability and conductivity of nanoporous core-shell iridium/iridium oxide oxygen evolution catalysts | - |
dc.type | Article | - |
dc.identifier.wosid | 000414915900011 | - |
dc.identifier.scopusid | 2-s2.0-85033794732 | - |
dc.type.rims | ART | - |
dc.citation.volume | 8 | - |
dc.citation.beginningpage | 1449 | - |
dc.citation.publicationname | NATURE COMMUNICATIONS | - |
dc.identifier.doi | 10.1038/s41467-017-01734-7 | - |
dc.contributor.localauthor | Lee, Hyunjoo | - |
dc.contributor.localauthor | Jung, Yousung | - |
dc.contributor.nonIdAuthor | Kim, Yong-Tae | - |
dc.contributor.nonIdAuthor | Lopes, Pietro Papa | - |
dc.contributor.nonIdAuthor | Park, Shin-Ae | - |
dc.contributor.nonIdAuthor | Lee, A-Yeong | - |
dc.contributor.nonIdAuthor | Danilovic, Nemanja | - |
dc.contributor.nonIdAuthor | Stamenkovic, Vojislav | - |
dc.contributor.nonIdAuthor | Erlebacher, Jonah | - |
dc.contributor.nonIdAuthor | Snyder, Joshua | - |
dc.contributor.nonIdAuthor | Markovic, Nenad M. | - |
dc.description.isOpenAccess | Y | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | ACIDIC ENVIRONMENTS | - |
dc.subject.keywordPlus | POROSITY EVOLUTION | - |
dc.subject.keywordPlus | IRIDIUM OXIDE | - |
dc.subject.keywordPlus | METAL-OXIDES | - |
dc.subject.keywordPlus | ELECTROCATALYSIS | - |
dc.subject.keywordPlus | NANOPARTICLES | - |
dc.subject.keywordPlus | REDUCTION | - |
dc.subject.keywordPlus | DESIGN | - |
dc.subject.keywordPlus | PRINCIPLES | - |
dc.subject.keywordPlus | RUTHENIUM | - |
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