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

doi:10.1039/c3nr02819d

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 journal › Article › peer-review

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 language	English
Pages (from-to)	10267-10274
Number of pages	8
Journal	Nanoscale
Volume	5
Issue number	21
DOIs	https://doi.org/10.1039/c3nr02819d
Publication status	Published - 15 Aug 2013

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

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.",

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T1 - Improved lithium storage properties of electrospun TiO2 with tunable morphology

T2 - from porous anatase to necklace rutile

AU - Yang, Yang

AU - Wang, Haiying

AU - Zhou, Qiwen

AU - Kong, Mengqi

AU - Ye, Haitao

AU - Yang, Gang

PY - 2013/8/15

Y1 - 2013/8/15

N2 - 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.

AB - 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.

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

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