Anatase/rutile titania anchored carbon nanotube porous nanocomposites as superior anodes for lithium ion batteries. Issue 24 (18th April 2016)

• Record Type: Journal Article
• Authors: Tang, Yakun; Liu, Lang; Zhao, Hongyang; Jia, Dianzeng; Xie, Xiaolin; Zhang, Yang; Li, Xiaohui
• Is Part Of: CrystEngComm. Volume 18:Issue 24(2016)
• Page Start: 4489
• Page End: 4494
• Publication Date: 2016-04-18
• Subjects: Crystals -- Periodicals; Crystal growth -- Periodicals; Crystallography -- Periodicals; Cristaux -- Périodiques; Cristaux -- Croissance -- Périodiques; Cristallographie -- Périodiques; 548
• DOI: 10.1039/c6ce00328a
• Languages: English
• ISSNs: 1466-8033

Abstract

Abstract : Anatase/rutile titania anchored carbon nanotube porous nanocomposites were designed using TiCl3 and polymer nanotubes as the titanium and carbon sources by a hydrothermal process with subsequent heat treatment, which exhibited the superior electrochemical performance. Abstract : Anatase/rutile titania anchored carbon nanotube (TiO2 @CNT) porous nanocomposites are fabricated using TiCl3 and polymer nanotubes as the titanium and carbon sources, respectively, by a hydrothermal process with subsequent heat treatment. As anodes for lithium ion batteries, the electrochemical performance of the nanocomposites is highly dependent on the crystal phase and content of TiO2 . Compared with anatase TiO2 /C nanocomposites, the TiO2 @CNT nanocomposites exhibit high reversible capacity, excellent rate capability and superior long-term cycling stability at high current densities. The enhanced electrochemical performance of the nanocomposites results from the shortened Li + diffusion distance, large contact surface area and sufficient conductivity. In addition, the crystal interface effect of mixed-phase TiO2 could improve the dispersion rate of electrons, which is conducive to the rapid transport of Li + and the electrons.