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Longitudinal Hierarchy Co(3)O(4) Mesocrystals with High-dense Exposure Facets and Anisotropic Interfaces for Direct-Ethanol Fuel Cells
Novel electrodes are needed for direct ethanol fuel cells with improved quality. Hierarchical engineering can produce catalysts composed of mesocrystals with many exposed active planes and multi-diffused voids. Here we report a simple, one-pot, hydrothermal method for fabricating Co(3)O(4)/carbon/su...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4830963/ https://www.ncbi.nlm.nih.gov/pubmed/27075551 http://dx.doi.org/10.1038/srep24330 |
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author | Hassen, Diab El-Safty, Sherif A. Tsuchiya, Koichi Chatterjee, Abhijit Elmarakbi, Ahmed Shenashen, Mohamed. A. Sakai, Masaru |
author_facet | Hassen, Diab El-Safty, Sherif A. Tsuchiya, Koichi Chatterjee, Abhijit Elmarakbi, Ahmed Shenashen, Mohamed. A. Sakai, Masaru |
author_sort | Hassen, Diab |
collection | PubMed |
description | Novel electrodes are needed for direct ethanol fuel cells with improved quality. Hierarchical engineering can produce catalysts composed of mesocrystals with many exposed active planes and multi-diffused voids. Here we report a simple, one-pot, hydrothermal method for fabricating Co(3)O(4)/carbon/substrate electrodes that provides control over the catalyst mesocrystal morphology (i.e., corn tubercle pellets or banana clusters oriented along nanotube domains, or layered lamina or multiple cantilevered sheets). These morphologies afforded catalysts with a high density of exposed active facets, a diverse range of mesopores in the cage interior, a window architecture, and vertical alignment to the substrate, which improved efficiency in an ethanol electrooxidation reaction compared with a conventional platinum/carbon electrode. On the atomic scale, the longitudinally aligned architecture of the Co(3)O(4) mesocrystals resulted in exposed low- and high-index single and interface surfaces that had improved electron transport and diffusion compared with currently used electrodes. |
format | Online Article Text |
id | pubmed-4830963 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-48309632016-04-19 Longitudinal Hierarchy Co(3)O(4) Mesocrystals with High-dense Exposure Facets and Anisotropic Interfaces for Direct-Ethanol Fuel Cells Hassen, Diab El-Safty, Sherif A. Tsuchiya, Koichi Chatterjee, Abhijit Elmarakbi, Ahmed Shenashen, Mohamed. A. Sakai, Masaru Sci Rep Article Novel electrodes are needed for direct ethanol fuel cells with improved quality. Hierarchical engineering can produce catalysts composed of mesocrystals with many exposed active planes and multi-diffused voids. Here we report a simple, one-pot, hydrothermal method for fabricating Co(3)O(4)/carbon/substrate electrodes that provides control over the catalyst mesocrystal morphology (i.e., corn tubercle pellets or banana clusters oriented along nanotube domains, or layered lamina or multiple cantilevered sheets). These morphologies afforded catalysts with a high density of exposed active facets, a diverse range of mesopores in the cage interior, a window architecture, and vertical alignment to the substrate, which improved efficiency in an ethanol electrooxidation reaction compared with a conventional platinum/carbon electrode. On the atomic scale, the longitudinally aligned architecture of the Co(3)O(4) mesocrystals resulted in exposed low- and high-index single and interface surfaces that had improved electron transport and diffusion compared with currently used electrodes. Nature Publishing Group 2016-04-14 /pmc/articles/PMC4830963/ /pubmed/27075551 http://dx.doi.org/10.1038/srep24330 Text en Copyright © 2016, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Article Hassen, Diab El-Safty, Sherif A. Tsuchiya, Koichi Chatterjee, Abhijit Elmarakbi, Ahmed Shenashen, Mohamed. A. Sakai, Masaru Longitudinal Hierarchy Co(3)O(4) Mesocrystals with High-dense Exposure Facets and Anisotropic Interfaces for Direct-Ethanol Fuel Cells |
title | Longitudinal Hierarchy Co(3)O(4) Mesocrystals with High-dense Exposure Facets and Anisotropic Interfaces for Direct-Ethanol Fuel Cells |
title_full | Longitudinal Hierarchy Co(3)O(4) Mesocrystals with High-dense Exposure Facets and Anisotropic Interfaces for Direct-Ethanol Fuel Cells |
title_fullStr | Longitudinal Hierarchy Co(3)O(4) Mesocrystals with High-dense Exposure Facets and Anisotropic Interfaces for Direct-Ethanol Fuel Cells |
title_full_unstemmed | Longitudinal Hierarchy Co(3)O(4) Mesocrystals with High-dense Exposure Facets and Anisotropic Interfaces for Direct-Ethanol Fuel Cells |
title_short | Longitudinal Hierarchy Co(3)O(4) Mesocrystals with High-dense Exposure Facets and Anisotropic Interfaces for Direct-Ethanol Fuel Cells |
title_sort | longitudinal hierarchy co(3)o(4) mesocrystals with high-dense exposure facets and anisotropic interfaces for direct-ethanol fuel cells |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4830963/ https://www.ncbi.nlm.nih.gov/pubmed/27075551 http://dx.doi.org/10.1038/srep24330 |
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