Journal article
Curvature effects in carbon nanomaterials: Exohedral versus endohedral supercapacitors
Journal of materials research, v 25(8), pp 1525-1531
Aug 2010
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Capacitive energy storage mechanisms in nanoporous carbon supercapacitors hinge on endohedral interactions in carbon materials with macro-, meso-, and micropores that have negative surface curvature. In this article, we show that because of the positive curvature found in zero-dimensional carbon onions or one-dimensional carbon nanotube arrays, exohedral interactions cause the normalized capacitance to increase with decreasing particle size or tube diameter, in sharp contrast to the behavior of nanoporous carbon materials. This finding is in good agreement with the trend of recent experimental data. Our analysis suggests that electrical energy storage can be improved by exploiting the highly curved surfaces of carbon nanotube arrays with diameters on the order of 1 nm.
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Details
- Title
- Curvature effects in carbon nanomaterials: Exohedral versus endohedral supercapacitors
- Creators
- Jingsong HuangBobby G SumpterVincent Meunier - Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6367Gleb Yushin - School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0245Cristelle PortetYury Gogotsi - Department of Materials Science and Engineering, A.J. Drexel Nanotechnology Institute, Drexel University, Philadelphia, Pennsylvania 19104
- Publication Details
- Journal of materials research, v 25(8), pp 1525-1531
- Publisher
- Cambridge University Press; New York, USA
- Number of pages
- 7
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000280447400016
- Scopus ID
- 2-s2.0-77955936396
- Other Identifier
- 991014970035104721
UN Sustainable Development Goals (SDGs)
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Source: SDGs in the Output
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Materials Science, Multidisciplinary