Curvature effects in carbon nanomaterials: Exohedral versus endohedral supercapacitors
By Jingsong Huang, Bobby G. Sumpter, Vincent Meunier, G. Yushin, C. Portet, Yury Gogotsi. 2010
136 citations recorded by the source corpus.
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.
Subfields: Electrical and Electronic Engineering, Electronic, Optical and Magnetic Materials, Materials Chemistry
View Paper: https://www.semanticscholar.org/paper/8724c2b922da46d1616ac2b2b6396ff77e0f8a04
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
In Electrical and Electronic Engineering
- Volker Presser
- Yury Gogotsi
- P. M. Biesheuvel
- S. Porada
- Maxim V. Fedorov
- John McDonough
- P. Simon
- Michel W. Barsoum
In Electronic, Optical and Magnetic Materials
- Volker Presser
- Yury Gogotsi
- Maxim V. Fedorov
- P. M. Biesheuvel
- John McDonough
- S. Porada
- R. Zhao
- P. Simon
In Materials Chemistry
- Yury Gogotsi
- Volker Presser
- John McDonough
- Michel W. Barsoum
- J. Rosen
- B. Anasori
- Chao Zhang
- Husam N. Alshareef
Citations in the corpus
- Review on the science and technology of water desalination by capacitive deionization (2013, background): “One example for more complex pore shapes is the space between dense nanoparticles which shows pore walls with a positive curvature [114].”
- Influence of the structure of carbon onions on their electrochemical performance in supercapacitor electrodes (2012, background): “The surface area increases after annealing as the density decreases due to the diamond to graphite transformation [14] and has a maximum of 580 m(2) g 1 at 1500 C, which corresponds to complete transformation from nanodiamond to graphitic carbon; TEM corroborates that carbon onions produced at this ”