Synthesis and electrochemical properties of Ni doped titanate nanotubes for lithium ion storage

✍ Scribed by Dong Hyun Kim; Ki Soo Lee; Ji Hoon Yoon; Jum Suk Jang; Duck-Kyun Choi; Yang-Kook Sun; Sun-Jae Kim; Kyung Sub Lee

• Publisher: Elsevier Science
• Year: 2008
• Tongue: English
• Weight: 825 KB
• Volume: 254
• Category: Article
• ISSN: 0169-4332
• DOI: 10.1016/j.apsusc.2008.02.057

✦ Synopsis

Ni doped titanate nanotubes were synthesized by hydrothermal method using Ni doped rutile TiO 2 nanopowders as a starting material. The electrochemical properties were investigated by cyclic voltammmetric methods. The microstructure and morphology of the synthesized powders were characterized by XRD (X-ray diffraction), and HRTEM (high resolution transmission electron microscopy). Ni doped nanotubes were composed of H 2 Ti 2 O 5 ÁH 2 O with outer and inner diameter of $10 nm and 6 nm and showed a initial discharge capacity of 305 mAh/g with poor cycling performance. However, after firing, the Ni doped nanotubes revealed better cycling performance due to lower reaction with hydrate and smaller diameter of the tubes.