High Lithium Storage in Mixed Crystallographic Phase Nanotubes of Titania and Carbon-Titania

Das, Shyamal; Bhattacharyya, Aninda J.

doi:10.1021/jp9066907

Cited by 39 publications

(25 citation statements)

References 39 publications

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“…11,12 Anatase has a tetragonal unit cell that can theoretically accommodate one lithium for every titanium. [19][20][21][22][23][24][25][26][27] Nano-sized anatase TiO 2 has been in the focus of the majority of studies on Li insertion. This composition is also most frequently reported as the maximum electrochemical insertion limit of Li into bulk anatase, although concentrations as high as 0.6 have been reported.…”

Section: Introductionmentioning

confidence: 99%

Oxygen deficient, carbon coated self-organized TiO₂ nanotubes as anode material for Li-ion intercalation

et al. 2015

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Section: Introductionmentioning

confidence: 99%

Oxygen deficient, carbon coated self-organized TiO₂ nanotubes as anode material for Li-ion intercalation

et al. 2015

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“…The discharge capacity reduced to 205 mA h g À1 aer these cycles, suggesting that the capacity fade rate was less than 0.04% per cycle. The 3D-TiO 2 /C electrode comprised of the 3D porous architecture showed excellent rate and cycling performance that was even superior to the cell performance reported for hydrothermally synthesized TiO 2 (B) nanotubes, 31 TiO 2 (B) nanowires, 28 TiO 2 (B) nanorods, 9 anatase TiO 2 nanorods, 55 carbon-coated TiO 2 nanotubes, 49 and Ag-modied TiO 2 nanotubes 56,57 (Fig. S9, see ESI †).…”

Section: Electrochemical Performancementioning

confidence: 88%

“…47,48 Another reason may be the irreversible lithium insertion into the distorted sites in the TiO 2 framework, which would bind the lithium ion. 49 Nevertheless, the Coulombic efficiency increased signicantly to 90% in the 2 nd cycle, 97% in the 9 th cycle and reached almost 100% in the 12 th cycle. In comparison with the discharge-charge curves of ST-TiO 2 /C, the discharge-charge curves of 3D-TiO 2 /C exhibited a different shape.…”

Section: Electrochemical Performancementioning

confidence: 94%

A 3D porous architecture composed of TiO2 nanotubes connected with a carbon nanofiber matrix for fast energy storage

Zhao

Jiang

et al. 2013

J. Mater. Chem. A

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To develop high-power and fast energy storage devices, electrode materials with superior ionic and electronic transport properties should be developed. Herein, a novel composite electrode with TiO 2 nanotubes connected onto a conductive carbon nanofiber network is designed and realized through a general route. The carbon matrix is first synthesized using an electrospinning technique and heattreatment, and the embedded rutile TiO 2 nanoparticles are formed in situ as the starting materials for the hydrothermal reaction. After hydrothermal treatment, a three-dimensional (3D) porous architecture is developed. The mechanistic analysis demonstrates that the raw embedded rutile TiO 2 nanoparticles react with NaOH solution and go out around the carbon nanofiber matrix to form a well-connected 3D porous nanotube/nanofiber architecture. By using the as-prepared films as electrodes for lithium-ion batteries (LIBs) without the application of any additional conductive agent or binder, high initial capacity and excellent rate performance (214 mA h g À1 at 5 C rate, 180 mA h g À1 at 10 C rate, 138 mA h g À1 at 20 C rate and 112 mA h g À1 at 30 C rate) are achieved. Moreover, the electrode shows stable cycling performance, especially at a high rate of 30 C, without undergoing decay after 1000 cycles.

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“…Also, strongly caustic NaOH and corrosive HCl or HF are commonly used for the synthesis of TiO 2 nanomaterials. [ 17,18 ] Beyond these, there is still potential danger in the high-temperature and high-pressure process in low boiling point infl ammable solvents. [ 21 ] Therefore, it is highly desirable but challenging to synthesize novel TiO 2 nanostructures as high-rate anode materials through a facile and green route.…”

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confidence: 99%

Sandwich‐Like, Stacked Ultrathin Titanate Nanosheets for Ultrafast Lithium Storage

et al. 2010

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Nanomaterials in architecture for green energy conversion and/ or storage provide one of the most desirable approaches to alleviate environmental and energy issues. [1][2][3][4] As a result, there is increasing interest in developing high-power anode materials, which can match with the state-of-the-art high-power cathode materials, for next generation high-performance rechargeable Li-ion batteries. [5][6][7] Titanium dioxide is regarded as one of the ideal candidates for high-rate anode materials, owing not only to its structural characteristics and special surface activity, [8][9][10][11] but also to its low cost, safety, and environmental benignity. The lack of open channels in bulk TiO 2 is the main drawback that restricts its capacity and rate capability for reversible lithium insertion and extraction. A reduction in the effective size and construction of open channels in the material are the main strategies currently employed to increase the rate performance. [ 1 , 4 ] The capacity could also be improved by reducing the path length of lithium ion migration and improving electron transport at the surface or in the bulk of the material. [ 10 , 12,13 ] With these strategies, the capacity of ultrafi ne TiO 2 nanocrystals and nanotubes, for example, is signifi cantly enhanced at lower rates. However, their capacity and cycle life deteriorate dramatically at higher rates. [ 9 , 14-17 ] In this respect, signifi cant efforts have recently been made on the fabrication of anatase TiO 2 nanosheets with exposed highly reactive (001) facets. [ 18 -21 ] These TiO 2 nanosheets are shown to be an excellent host structure for lithium insertion and extraction due to the presence of exposed (001) facets and short path along the [001] direction for lithium ion diffusion.Although the anatase framework undergoes insignifi cant structural distortion during lithium insertion and extraction, [ 22 ] the rate of lithium diffusion is still limited by the narrow space of the host Ti-O lattice. Also, strongly caustic NaOH and corrosive HCl or HF are commonly used for the synthesis of TiO 2 nanomaterials. [ 17,18 ] Beyond these, there is still potential danger in the high-temperature and high-pressure process in low boiling point infl ammable solvents. [ 21 ] Therefore, it is highly desirable but challenging to synthesize novel TiO 2 nanostructures as high-rate anode materials through a facile and green route. As an important group of solvents, ionic liquids (ILs), which exhibit unique properties including low volatility, a wide liquid temperature range, good dissolving ability, and designability, have been intensively used in organic synthesis, catalysis, and inorganic nanomaterials synthesis. [23][24][25][26] This inspires us to design a facile ILs-based synthetic system to prepare an attractive framework for high-effi ciency lithium storage.One such framework of TiO 2 active materials is ultrathin 2D nanosheets, which allow ultrafast surface lithium storage due to maximized Li + ion diffusion and electron transport and the elimin...

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High Lithium Storage in Mixed Crystallographic Phase Nanotubes of Titania and Carbon-Titania

Cited by 39 publications

References 39 publications

Oxygen deficient, carbon coated self-organized TiO₂ nanotubes as anode material for Li-ion intercalation

Oxygen deficient, carbon coated self-organized TiO₂ nanotubes as anode material for Li-ion intercalation

A 3D porous architecture composed of TiO2 nanotubes connected with a carbon nanofiber matrix for fast energy storage

Sandwich‐Like, Stacked Ultrathin Titanate Nanosheets for Ultrafast Lithium Storage

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High Lithium Storage in Mixed Crystallographic Phase Nanotubes of Titania and Carbon-Titania

Cited by 39 publications

References 39 publications

Oxygen deficient, carbon coated self-organized TiO2 nanotubes as anode material for Li-ion intercalation

Oxygen deficient, carbon coated self-organized TiO2 nanotubes as anode material for Li-ion intercalation

A 3D porous architecture composed of TiO2 nanotubes connected with a carbon nanofiber matrix for fast energy storage

Sandwich‐Like, Stacked Ultrathin Titanate Nanosheets for Ultrafast Lithium Storage

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Oxygen deficient, carbon coated self-organized TiO₂ nanotubes as anode material for Li-ion intercalation

Oxygen deficient, carbon coated self-organized TiO₂ nanotubes as anode material for Li-ion intercalation