Abstract
TiO2 nanotube arrays (TiO2 NTAs) were prepared by anodization method. The as-prepared TiO2 NTAs were annealed at 450 °C for 3 h transforming amorphous TiO2 to anatase TiO2. The inner diameter and tube length of synthesized TiO2 NTAs are approximately 100 nm and 1.0 mm, respectively. Electric double-layer capacitor (EDLC) was fabricated using TiO2 NTAs as electrodes with 6 M KOH electrolyte. The internal resistance of the EDLC is relatively low (3.8 – 6.5 Ω) depending on the operating temperature. This work confirmed experimentally the use of TiO2 NTAs as EDLC electrodes.
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