publication . Other literature type . Article . 2011

Curvature effects in carbon nanomaterials: Exohedral versus endohedral supercapacitors

Huang, Jingsong; Bobby,; Sumpter, Bobby G.; Meunier, Vincent; Yushin, Gleb; Portet, Cristelle; Gogotsi, Yury;
  • Published: 31 Jan 2011
  • Publisher: Cambridge University Press (CUP)
Abstract
<jats:p>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 ca...
Subjects
free text keywords: Chemical engineering, Carbide-derived carbon, Energy storage, Composite material, Carbon nanotube, law.invention, law, Curvature, Nanotechnology, Colossal carbon tube, Materials science, Optical properties of carbon nanotubes, Carbon, chemistry.chemical_element, chemistry, Supercapacitor
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publication . Other literature type . Article . 2011

Curvature effects in carbon nanomaterials: Exohedral versus endohedral supercapacitors

Huang, Jingsong; Bobby,; Sumpter, Bobby G.; Meunier, Vincent; Yushin, Gleb; Portet, Cristelle; Gogotsi, Yury;