dc.contributor.author | Chen, B | |
dc.contributor.author | Ma, M | |
dc.contributor.author | Zhu, Y | |
dc.contributor.author | Xia, Y | |
dc.date.accessioned | 2017-07-13T14:36:47Z | |
dc.date.issued | 2017-07-13 | |
dc.description.abstract | A series of nanocomposites of cobalt embedded in N-doped nanoporous carbons, carbon nanotubes or hollow carbon onions have been synthesized by a one-step carbonization of metal-organic-framework ZIF-67. The effect of the carbonization temperature on the structural evolution of the resulting nanocomposites has been investigated in detail. Among the as-synthesized materials, the cobalt/nanoporous N-doped carbon composites have demonstrated excellent electrocatalytic activities and durability towards oxygen reduction reaction in alkaline medium. Compared to the benchmark Pt/C catalyst, the optimized Co@C-800 (carbonized at 800 °C) exhibited high oxygen reduction reaction activity with an onset potential of 0.92 V, and a half-wave potential of 0.82 V. Moreover, the optimized Co@C-800 also showed enhanced electrocatalytic activity towards oxygen evolution reaction from water splitting, with a low onset potential of 1.43 V and a potential of 1.61 V at 10 mA cm−2 current density. This work offered a simple solution to develop metal-organic-framework-derived materials for highly efficient electrochemical applications. | en_GB |
dc.description.sponsorship | The financial support by the EPSRC (EP/N034627/1), Royal Society and University of Exeter is greatly acknowledged. | en_GB |
dc.identifier.citation | Vol. 7, article 5266 | en_GB |
dc.identifier.doi | 10.1038/s41598-017-05636-y | |
dc.identifier.uri | http://hdl.handle.net/10871/28441 | |
dc.language.iso | en | en_GB |
dc.publisher | Springer Nature | en_GB |
dc.rights | © The Author(s) 2017. Open Access. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. | en_GB |
dc.subject | Electrocatalysis | en_GB |
dc.subject | Metal–organic frameworks | en_GB |
dc.subject | Porous materials | en_GB |
dc.title | Metal-organic-frameworks derived cobalt embedded in various carbon structures as bifunctional electrocatalysts for oxygen reduction and evolution reactions | en_GB |
dc.type | Article | en_GB |
dc.date.available | 2017-07-13T14:36:47Z | |
dc.identifier.issn | 2045-2322 | |
dc.description | This is the final version of the article. Available from Springer Nature via the DOI in this record. | en_GB |
dc.identifier.journal | Scientific Reports | en_GB |