Anatase nanotubes as an electrode material for Lithium-Ion batteries

• Verfasst von: Zakharova, Galina S. [VerfasserIn]
• Verfasst von: Jähne, Carsten [VerfasserIn]
• Verfasst von: Klingeler, Rüdiger [VerfasserIn]
• Titel: Anatase nanotubes as an electrode material for Lithium-Ion batteries
• Verf.angabe: G.S. Zakharova, C. Jähne, A. Popa, Ch. Täschner, Th. Gemming, A. Leonhardt, B. Büchner, and R. Klingeler
• Umfang: 7 S.
• Fussnoten: Gesehen am 22.08.2018
• Titel Quelle: Enthalten in: The journal of physical chemistry <Washington, DC> / C
• Jahr Quelle: 2012
• Band/Heft Quelle: 116(2012), 15, S. 8714-8720
• ISSN Quelle: 1932-7455
• DOI: doi:10.1021/jp300955r
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1580276393

Abstract

Anatase TiO2 nanotubes were synthesized via the hydrothermal method followed by annealing at 500 °C in argon for 1 h. The phase structure, morphology, and composition were investigated in detail by means of X-ray diffraction, scanning and high-resolution transmission electron microscopy, infrared spectroscopy, and thermal analysis. The material consists of nanotubes with diameter of 10-15 nm and lengths of several hundred nanometers. The electrochemical properties were investigated by cyclic voltammetry and galvanostatic cycling. The data imply a first cycle irreversible capacity of 385 mAh/g, and capacities of 307 and 265 mAh/g after the second and 50th cycle, respectively, at C/10. The Coulombic efficiency of about 99% after cycle 50 implies excellent cycling stability. Hence anatase TiO2 nanotubes evidence great potential for usage in high-power lithium-ion batteries.