The peculiar architecture of a novel class of anisotropic TiO 2(B) nanocrystals, which were synthesized by an surfactant-assisted nonaqueous sol-gel route, was profitably exploited to fabricate highly efficient mesoporous electrodes for Li storage. These electrodes are composed of a continuous spongy network of interconnected nanoscale units with a rod-shaped profile that terminates into one or two bulgelike or branch-shaped apexes spanning areas of about 5 × 10 nm2. This architecture transcribes into a superior cycling performance (a charge capacitance of 222 mAh g-1 was achieved by a carbon-free TiO2(B)-nanorods-based electrode vs 110 mAh g-1 exhibited by a comparable TiO 2-anatase electrode) and good chemical stability (more than 90% of the initial capacity remains after 100 charging/discharging cycles). Their outstanding lithiation/delithiation capabilities were also exploited to fabricate electrochromic devices that revealed an excellent coloration efficiency (130 cm2 C-1 at 800 nm) upon the application of 1.5 V as well as an extremely fast electrochromic switching (coloration time ∼5 s). © 2014 American Chemical Society.

Ultrathin TiO2(B) nanorods with superior lithium-ion storage performance / Giannuzzi, Roberto; Manca, Michele; De Marco, Luisa; Belviso, Maria R.; Cannavale, Alessandro; Sibillano, Teresa; Giannini, Cinzia; Cozzoli, P. Davide; Gigli, Giuseppe. - In: ACS APPLIED MATERIALS & INTERFACES. - ISSN 1944-8244. - 6:3(2014), pp. 1933-1943. [10.1021/am4049833]

Ultrathin TiO2(B) nanorods with superior lithium-ion storage performance

CANNAVALE, Alessandro;Sibillano, Teresa;
2014-01-01

Abstract

The peculiar architecture of a novel class of anisotropic TiO 2(B) nanocrystals, which were synthesized by an surfactant-assisted nonaqueous sol-gel route, was profitably exploited to fabricate highly efficient mesoporous electrodes for Li storage. These electrodes are composed of a continuous spongy network of interconnected nanoscale units with a rod-shaped profile that terminates into one or two bulgelike or branch-shaped apexes spanning areas of about 5 × 10 nm2. This architecture transcribes into a superior cycling performance (a charge capacitance of 222 mAh g-1 was achieved by a carbon-free TiO2(B)-nanorods-based electrode vs 110 mAh g-1 exhibited by a comparable TiO 2-anatase electrode) and good chemical stability (more than 90% of the initial capacity remains after 100 charging/discharging cycles). Their outstanding lithiation/delithiation capabilities were also exploited to fabricate electrochromic devices that revealed an excellent coloration efficiency (130 cm2 C-1 at 800 nm) upon the application of 1.5 V as well as an extremely fast electrochromic switching (coloration time ∼5 s). © 2014 American Chemical Society.
2014
Ultrathin TiO2(B) nanorods with superior lithium-ion storage performance / Giannuzzi, Roberto; Manca, Michele; De Marco, Luisa; Belviso, Maria R.; Cannavale, Alessandro; Sibillano, Teresa; Giannini, Cinzia; Cozzoli, P. Davide; Gigli, Giuseppe. - In: ACS APPLIED MATERIALS & INTERFACES. - ISSN 1944-8244. - 6:3(2014), pp. 1933-1943. [10.1021/am4049833]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11589/82520
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