Abstract
There have been numerous studies of the electrode materials of electric double-layer capacitors (EDLCs), such as activated carbons, carbon nanotubes, and other carbon-based materials which have a high specific surface area. Of the materials being developed for EDLCs, activated carbon remains the most promising because of its low cost and high specific capacitance (∼200 F/g). However, the widespread commercial use of activated carbon is impaired by its low volumetric capacitance, which results from its low density. In this study, the charge-storage behavior of TiO2 nanotube arrays from an electric double layer was investigated. The specific capacitances of the TiO2 nanotube arrays were greatly influenced not only by their crystalline structure, but also by the electrolyte composition. The volumetric capacitance of the TiO2 nanotube arrays was more than 1.8 times higher than that of activated-carbon-based EDLCs in a water-based electrolyte.
| Original language | English |
|---|---|
| Journal | Journal of the Electrochemical Society |
| Volume | 156 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - 2009 Jun 1 |
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All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Renewable Energy, Sustainability and the Environment
- Condensed Matter Physics
- Surfaces, Coatings and Films
- Electrochemistry
- Materials Chemistry
Cite this
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Controlled TiO2 nanotube arrays as an active material for high power energy-storage devices. / Kim, Min Seok; Lee, Tae Woo; Park, Jong Hyeok.
In: Journal of the Electrochemical Society, Vol. 156, No. 7, 01.06.2009.Research output: Contribution to journal › Article
TY - JOUR
T1 - Controlled TiO2 nanotube arrays as an active material for high power energy-storage devices
AU - Kim, Min Seok
AU - Lee, Tae Woo
AU - Park, Jong Hyeok
PY - 2009/6/1
Y1 - 2009/6/1
N2 - There have been numerous studies of the electrode materials of electric double-layer capacitors (EDLCs), such as activated carbons, carbon nanotubes, and other carbon-based materials which have a high specific surface area. Of the materials being developed for EDLCs, activated carbon remains the most promising because of its low cost and high specific capacitance (∼200 F/g). However, the widespread commercial use of activated carbon is impaired by its low volumetric capacitance, which results from its low density. In this study, the charge-storage behavior of TiO2 nanotube arrays from an electric double layer was investigated. The specific capacitances of the TiO2 nanotube arrays were greatly influenced not only by their crystalline structure, but also by the electrolyte composition. The volumetric capacitance of the TiO2 nanotube arrays was more than 1.8 times higher than that of activated-carbon-based EDLCs in a water-based electrolyte.
AB - There have been numerous studies of the electrode materials of electric double-layer capacitors (EDLCs), such as activated carbons, carbon nanotubes, and other carbon-based materials which have a high specific surface area. Of the materials being developed for EDLCs, activated carbon remains the most promising because of its low cost and high specific capacitance (∼200 F/g). However, the widespread commercial use of activated carbon is impaired by its low volumetric capacitance, which results from its low density. In this study, the charge-storage behavior of TiO2 nanotube arrays from an electric double layer was investigated. The specific capacitances of the TiO2 nanotube arrays were greatly influenced not only by their crystalline structure, but also by the electrolyte composition. The volumetric capacitance of the TiO2 nanotube arrays was more than 1.8 times higher than that of activated-carbon-based EDLCs in a water-based electrolyte.
UR - http://www.scopus.com/inward/record.url?scp=65949116796&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=65949116796&partnerID=8YFLogxK
U2 - 10.1149/1.3129682
DO - 10.1149/1.3129682
M3 - Article
AN - SCOPUS:65949116796
VL - 156
JO - Journal of the Electrochemical Society
JF - Journal of the Electrochemical Society
SN - 0013-4651
IS - 7
ER -