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

Yang Yang, Haiying Wang, Qiwen Zhou, Mengqi Kong, Haitao Ye, Gang Yang*

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

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 TiO 2 as an anode for lithium storage with improved electrode performance.

Original languageEnglish
Pages (from-to)10267-10274
Number of pages8
JournalNanoscale
Volume5
Issue number21
DOIs
Publication statusPublished - 15 Aug 2013

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