Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 3, Issue 37, Pages 18882-18888Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ta04870b
Keywords
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Funding
- National Natural Science Foundation of China (NSFC) [21173049]
- Research Fund for the Doctoral Program of Higher Education of China (RFDP) [20133514110002]
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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 g(-1) at 5 C after 100 and 500 cycles, respectively.
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