Issue 37, 2015

One-step hydrothermal synthesis of Nb doped brookite TiO2 nanosheets with enhanced lithium-ion intercalation properties

Abstract

In the present work, Nb doped brookite TiO2 nanosheets were successfully synthesized via a one-step hydrothermal route. The synthesized samples were characterized by X-ray diffraction (XRD), Raman spectroscopy, scanning and transmission electron microscopy (SEM/TEM) and X-ray photoelectron spectroscopy (XPS). According to the experimental results, a possible mechanism for the formation of Nb doped brookite TiO2 nanosheets was proposed. Furthermore, Nb doped brookite TiO2 nanosheets were used as an anode material for the Li-ion intercalation reaction and it was found that their electronic/ionic conductivity was improved. At the same time, the cell made of Nb doped brookite TiO2 nanosheets also exhibited enhanced lithium-ion intercalation properties. For instance, this material displayed reversible capacities of 119.7 and 104.6 mA h gāˆ’1 at 5 C after 100 and 500 cycles, respectively.

Graphical abstract: One-step hydrothermal synthesis of Nb doped brookite TiO2 nanosheets with enhanced lithium-ion intercalation properties

Supplementary files

Article information

Article type
Paper
Submitted
01 Jul 2015
Accepted
07 Aug 2015
First published
07 Aug 2015

J. Mater. Chem. A, 2015,3, 18882-18888

One-step hydrothermal synthesis of Nb doped brookite TiO2 nanosheets with enhanced lithium-ion intercalation properties

Y. Liu, M. Liu, T. Lan, J. Dou and M. Wei, J. Mater. Chem. A, 2015, 3, 18882 DOI: 10.1039/C5TA04870B

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