Li4Ti5O12/TiO2 Hollow Spheres Composed Nanoflakes with Preferentially Exposed Li4Ti5O12 (011) Facets for High-Rate Lithium Ion Batteries
2014
Jiang, Yan-Mei | Wang, Kai-Xue | Wu, Xue-Yan | Zhang, Hao-Jie | Bartlett, Bart M. | Chen, J. S. (Jie-Sheng)
Li₄Ti₅O₁₂/TiO₂ hollow spheres composed of nanoflakes with preferentially exposed Li₄Ti₅O₁₂ (011) facets have been successfully fabricated via a facile hydrothermal processing route and following calcination. These hollow spheres show good electrochemical performance in terms of high capacity (266 mAh g–¹ at 0.1 A g–¹), and excellent rate capability (110 mAh g–¹ at 4.0 A g–¹ up to 100 cycles), attributed to unique morphology, preferred facet orientation of the nanoflakes and microscopic structure of the hollow spheres. The preferentially exposed Li₄Ti₅O₁₂ (011) facets leads to fast lithium insertion/deinsertion processes in materials because of shorten lithium ion diffusion length, proved to be highly effective in improving the electrochemical properties of the hollow spheres. The excellent electrochemical performance makes these hollow spheres promising anode material for lithium ion batteries with high power and energy densities.
Show more [+] Less [-]AGROVOC Keywords
Bibliographic information
This bibliographic record has been provided by National Agricultural Library
