Surface Characteristic Effect of Ag/TiO₂ Nanoarray Composite Structure on Supercapacitor Electrode Properties

Abstract

Ag-ion-modified titanium nanotube (Ag/TiO2-NT) arrays were designed and fabricated as the electrode material of supercapacitors for electrochemical energy storage. TiO2 nanotube (NT) arrays were prepared by electrochemical anodic oxidation and then treated by Ag metal vapor vacuum arc (MEVVA) implantation. The Ag amount was controlled via adjusting ion implantation parameters. The morphology, crystallinity, and electrochemistry properties of as-obtained Ag/TiO2-NT electrodes were distinguished based on various characterizations. Compared with different doses of Ag/TiO2-NTs, the electrode with the dose of 5.0 × 1017 ions·cm−2 exhibited much higher electrode capacity and greatly enhanced activity in comparison to the pure TiO2-NTs. The modified electrode showed a high capacitance of 9324.6 mF·cm−3 (86.9 mF·g, 1.2 mF·cm−2), energy density of 82.8 μWh·cm−3 (0.8 μWh·g, 0.0103 μWh·cm−2), and power density of 161.0 mW·cm−3 (150.4 μW·g, 2.00 μW·cm−2) at the current density of 0.05 mA. Therefore, Ag/TiO2-NTs could act as a feasible electrode material of supercapacitors.

Ion‐Implantation in Titania‐Based Plasmonic Photo‐anodes: A Review

“…Ion-implantation in TiO 2 has been employed in a host of applications involving optical, [5,6,239,240] magnetic, [237,238,247,248] bio-material, [170,208,[249][250][251] and plasmonic sensing. [35,98,180,200] Furthermore, the optical domain is predominantly for the photo-catalytic, [6,58,226,[252][253][254] water splitting, [2,3,36,38,240] and photo-voltaic [35,180,200,[255][256][257][258][259] applications.…”

Supercapacitor performances of titanium–polymeric nanocomposites: a review study

“…In Fig. 15 Galvanostatic charge/discharge (GCD) graphs of a Ag/TiO 2 nanotubes [152], b MnO 2 /TiO 2 nanotube arrays [153], c α-MoO 3 nanoplate/TiO 2 [154], and d V 2 O 5 /TiO 2 nano-arrays [155]. Reprinted with permission from Refs.…”

“…Iqbal et al [151] have synthesized strontium oxide (SrO) from sonochemical method by calcination. The synthetic procedure of silver/ titanium dioxide (Ag/TiO 2 ) nanotubes [152], manganese (IV) oxide/titanium dioxide (MnO 2 /TiO 2 ) nanotube arrays [153], α-molybdenum oxide nanoplate/titanium dioxide (α-MoO 3 nanoplate/TiO 2 ) [154] and vanadium pentaoxide/ titanium dioxide (V 2 O 5 /TiO 2 ) nano-arrays [155] is presented in Fig. 13.…”

Radiation effects on materials for electrochemical energy storage systems

“…The effect of Ag ion irradiation was studied at 60 keV and fluences ranging 0.5 × 10 17 –1.0 × 10 18 ions per cm 2 on anodically grown TiO 2 nanotube negative electrodes for capacitors. 61 The surface morphology of the TiO 2 nanotubes changed significantly as a result of irradiation. At lower irradiation fluences (0.5 × 10 17 and 1 × 10 17 ions per cm 2 ), a surface film layer formed while the underlying tube structure appeared to be unaffected.…”