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Nanoscale. 2013 Nov 7;5(21):10267-74. doi: 10.1039/c3nr02819d. Epub 2013 Sep 6.

Improved lithium storage properties of electrospun TiO2 with tunable morphology: from porous anatase to necklace rutile.

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  • 1Jiangsu Laboratory of Advanced Functional Material, Department of Chemistry, Changshu Institute of Technology, Changshu 215500, China.


Three-dimensional TiO2 with tunable morphology and crystalline phase was successfully prepared by the electrospinning technique and subsequent annealing. Porous-shaped anatase TiO2, cluster-shaped anatase TiO2, hierarchical-shaped rutile (minor) TiO2 and nano-necklace rutile (major) TiO2 were achieved at 500, 600, 700 and 800 °C, respectively. The mechanism of the formation of these tailored morphologies and crystallinity was investigated. Lithium insertion properties were evaluated by galvanostatic and potentiostatic modes in half-cell configurations. By combining the large surface area, open mesoporosity and stable crystalline phase, the porous-shaped anatase TiO2 exhibited the highest capacity, best rate and cycling performance among the four samples. The present results demonstrated the usefulness of three-dimensional TiO2 as an anode for lithium storage with improved electrode performance.

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