dc.contributor.author | Khalily, Mohammad Aref | en_US |
dc.contributor.author | Patil, Bhushan | en_US |
dc.contributor.author | Yılmaz, Eda | en_US |
dc.contributor.author | Uyar, Tamer | en_US |
dc.date.accessioned | 2020-02-14T13:06:41Z | |
dc.date.available | 2020-02-14T13:06:41Z | |
dc.date.issued | 2019 | |
dc.identifier.uri | http://hdl.handle.net/11693/53371 | |
dc.description.abstract | The oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) are considered as the two crucial reactions in key renewable-energy technologies including fuel cells and water splitting. Despite promising research progress in the preparation of various non-noble metal based electrocatalysts, it is still highly challenging but desirable to develop novel fabrication strategies to synthesize highly active and cost-effective ORR/OER bifunctional electrocatalysts in a precisely controlled manner. Herein, we report atomic layer deposition (ALD) of highly monodisperse Co3O4 nanocrystals of different sizes on N-doped electrospun carbon nanofibers (nCNFs) as high performance bifunctional catalysts (Co@nCNFs) for the ORR and OER. Co@nCNFs (with an average Co3O4 particle size of ∼3 nm) show high ORR performance exhibiting an onset potential of 0.87 V with a low Tafel slope of 119 mV dec−1 approaching that of commercial Pt/C. Similarly, the Co@nCNF electrocatalyst showed remarkable catalytic activity in the OER. The turnover frequency (TOF) value determined at an overpotential of 550 mV for the Co@nCNFs is ∼0.14 s−1 which is ca. 3 and ca. 15-fold higher than those of bulk Co (∼0.05 s−1) and the standard state-of-the-art IrOx (0.0089 s−1) catalyst, respectively. This work will open new possibilities for fabrication of inexpensive non-noble metal materials in highly controlled manner for applications as bifunctional ORR/OER electrocatalysis. | en_US |
dc.language.iso | English | en_US |
dc.source.title | Nanoscale Advances | en_US |
dc.relation.isversionof | https://dx.doi.org/10.1039/c8na00330k | en_US |
dc.title | Atomic layer deposition of Co3O4 nanocrystals on N-doped electrospun carbon nanofibers for oxygen reduction and oxygen evolution reactions | en_US |
dc.type | Article | en_US |
dc.department | Institute of Materials Science and Nanotechnology (UNAM) | en_US |
dc.citation.spage | 1224 | en_US |
dc.citation.epage | 1231 | en_US |
dc.citation.volumeNumber | 1 | en_US |
dc.citation.issueNumber | 3 | en_US |
dc.identifier.doi | 10.1039/c8na00330k | en_US |
dc.publisher | Royal Society of Chemistry | en_US |
dc.contributor.bilkentauthor | Khalily, Mohammad Aref | |
dc.contributor.bilkentauthor | Patil, Bhushan | |
dc.contributor.bilkentauthor | Yılmaz, Eda | |
dc.contributor.bilkentauthor | Uyar, Tamer | |
dc.identifier.eissn | 2516-0230 | |
buir.contributor.orcid | Uyar, Tamer|0000-0002-3989-4481 | en_US |