Electrospun TiO2-δ nanofibers as insertion anode for Li-ion battery applications

Jayaraman Sundaramurthy; Vanchiappan Aravindan; Palaniswamy Suresh Kumar; Srinivasan Madhavi; Seeram Ramakrishna

doi:10.1021/jp412787z

Electrospun TiO_2-δ nanofibers as insertion anode for Li-ion battery applications

Jayaraman Sundaramurthy, Vanchiappan Aravindan^*, Palaniswamy Suresh Kumar, Srinivasan Madhavi, Seeram Ramakrishna

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

28 Citations (Scopus)

Abstract

A scalable electrospinning technique is used to synthesize 1D TiO ₂ nanofibers for Li-ion battery applications. Oxygen deficiency (TiO_2-δ) in anatase phases is created by treating the nanofibers in the H₂ atmosphere with various temperature conditions. Structural and morphological features of both pure and oxygen deficient phases are analyzed by X-ray diffraction and scanning electron microscopy, respectively. Li-insertion properties of such nanofibers are evaluated in half-cell configuration at high current rate of 150 mA g^-1 and found that there is no improvement in the reversible capacity after H₂ treatment. Improved cycling profiles are noted for such deficient phases compared with pure TiO₂ nanofibers. ac impedance spectra were also conducted to validate the electrical conductivity profiles of the electrospun TiO₂ nanofibers.

Original language	English
Pages (from-to)	16776-16781
Number of pages	6
Journal	Journal of Physical Chemistry C
Volume	118
Issue number	30
DOIs	https://doi.org/10.1021/jp412787z
Publication status	Published - Jul 31 2014
Externally published	Yes

ASJC Scopus Subject Areas

Electronic, Optical and Magnetic Materials
General Energy
Physical and Theoretical Chemistry
Surfaces, Coatings and Films

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Cite this

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title = "Electrospun TiO2-δ nanofibers as insertion anode for Li-ion battery applications",

abstract = "A scalable electrospinning technique is used to synthesize 1D TiO 2 nanofibers for Li-ion battery applications. Oxygen deficiency (TiO2-δ) in anatase phases is created by treating the nanofibers in the H2 atmosphere with various temperature conditions. Structural and morphological features of both pure and oxygen deficient phases are analyzed by X-ray diffraction and scanning electron microscopy, respectively. Li-insertion properties of such nanofibers are evaluated in half-cell configuration at high current rate of 150 mA g-1 and found that there is no improvement in the reversible capacity after H2 treatment. Improved cycling profiles are noted for such deficient phases compared with pure TiO2 nanofibers. ac impedance spectra were also conducted to validate the electrical conductivity profiles of the electrospun TiO2 nanofibers.",

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AU - Sundaramurthy, Jayaraman

AU - Aravindan, Vanchiappan

AU - Suresh Kumar, Palaniswamy

AU - Madhavi, Srinivasan

AU - Ramakrishna, Seeram

PY - 2014/7/31

Y1 - 2014/7/31

N2 - A scalable electrospinning technique is used to synthesize 1D TiO 2 nanofibers for Li-ion battery applications. Oxygen deficiency (TiO2-δ) in anatase phases is created by treating the nanofibers in the H2 atmosphere with various temperature conditions. Structural and morphological features of both pure and oxygen deficient phases are analyzed by X-ray diffraction and scanning electron microscopy, respectively. Li-insertion properties of such nanofibers are evaluated in half-cell configuration at high current rate of 150 mA g-1 and found that there is no improvement in the reversible capacity after H2 treatment. Improved cycling profiles are noted for such deficient phases compared with pure TiO2 nanofibers. ac impedance spectra were also conducted to validate the electrical conductivity profiles of the electrospun TiO2 nanofibers.

AB - A scalable electrospinning technique is used to synthesize 1D TiO 2 nanofibers for Li-ion battery applications. Oxygen deficiency (TiO2-δ) in anatase phases is created by treating the nanofibers in the H2 atmosphere with various temperature conditions. Structural and morphological features of both pure and oxygen deficient phases are analyzed by X-ray diffraction and scanning electron microscopy, respectively. Li-insertion properties of such nanofibers are evaluated in half-cell configuration at high current rate of 150 mA g-1 and found that there is no improvement in the reversible capacity after H2 treatment. Improved cycling profiles are noted for such deficient phases compared with pure TiO2 nanofibers. ac impedance spectra were also conducted to validate the electrical conductivity profiles of the electrospun TiO2 nanofibers.

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Electrospun TiO_2-δ nanofibers as insertion anode for Li-ion battery applications

Abstract

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