Physical and Electrical Property of TiO₂ Nanotube Arrays for Supercapacitors

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.

• Periodical: Key Engineering Materials (Volume 798)
• Pages: 91-96
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.798.91
• Online since: April 2019
• Authors: Somwan Chumphongphan*
• Keywords: Anodization, Electric Double-Layer Capacitor, Nanotube Arrays, Supercapacitor

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