Preparation and electrochemical characterization of TiO2 nanowires as an electrode material for lithium-ion batteries

Wang, Yunfei; Wu, Muying; Zhang, W.F.

doi:10.1016/j.electacta.2008.05.068

Cited by 140 publications

(76 citation statements)

References 41 publications

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“…The initial discharge capacity and the discharge capacity after 100 cycles were 195.3 mAh g -1 and 151.5 mAh g -1 , respectively, and the discharge current density was 4.3 mA g -1 , similar to other reports in the literature (where the capacity is between 100 mAh g -1 and 170 mAh g -1 after 100 cycles at 20 mA g -1 [1,2,4,12,28]). Fig.…”

Section: Resultssupporting

confidence: 76%

“…4(a, b). After the 60 min anodization process, the mesh retained sufficient void regions, and the [4,26]. A similar observation has been previously reported, and it has been ascribed to an activation effect during the initial cycling of the TiO 2 nanotubes [27].…”

Section: Resultssupporting

confidence: 71%

“…Compared to graphite, TiO 2 has a higher lithium intercalation potential (1.75 V vs. Li + /Li), enabling it to avoid the deposition of metallic lithium, and it has higher capacity for Li + intercalation/de-intercalation [4,5]. [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

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Tuning three-dimensional TiO2 nanotube electrode to achieve high utilization of Ti substrate for lithium storage

Zhang

Qing-yuan

Chou

et al. 2014

Electrochimica Acta

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. (2014). Tuning three-dimensional TiO2 nanotube electrode to achieve high utilization of Ti substrate for lithium storage. Electrochimica Acta, 133 570-577.Tuning three-dimensional TiO2 nanotube electrode to achieve high utilization of Ti substrate for lithium storage AbstractThree-dimensional (3D) TiO2 nanotube arrays grown on Ti mesh were prepared via the anodization process. The diameters of the Ti and TiO 2/Ti wires and the length of the TiO2 nanotubes have linear relationships with the anodization processing time. When the anodization processing time is 600 min, the TiO2/Ti mesh anode materials showed good capacity retention and high specific area capacity, without the need for a current collector or binder, due to their high surface area, high substrate utilization, and large active material loading rate per unit area. At the current density of 50 μA cm-2, TiO2/Ti mesh with 600 min anodization processing time has a stable discharge platform at 1.78 V, and the specific area capacity is 1745.5 μAh cm-2 over 100 cycles. By tuning the geometric parameters of the TiO2/Ti mesh and the anodization processing time, we can pave the way to finding TiO2/Ti mesh electrodes for lithium-ion batteries with high capacity per unit area and outstanding mechanical behaviour.Keywords substrate, three, lithium, dimensional, storage, achieve, tio2, ti, nanotube, utilization, high, electrode, tuning Disciplines Engineering | Physical Sciences and Mathematics Publication DetailsZhang, Z., Zeng, Q., Chou, S., Li, X., Li, H., Ozawa, K., Liu, H. & Wang, J. (2014). Tuning three-dimensional TiO2 nanotube electrode to achieve high utilization of Ti substrate for lithium storage. Electrochimica Acta, 133 570-577. nanotubes have linear relationships with the anodization processing time. When the anodization processing time is 600 min, the TiO 2 /Ti mesh anode materials showed good capacity retention and high specific area capacity, without the need for a current collector or binder, due to their high surface area, high substrate utilization, and large active material loading rate per unit area. At the current density of 50 µA cm -2 , TiO 2 /Ti mesh with 600 min anodization processing time has a stable discharge platform at 1.78 V, and the specific area capacity is 1745.5 µAh cm -2 over 100 cycles. By tuning the geometric parameters of the TiO 2 /Ti mesh and the anodization processing time, we can pave the way to finding TiO 2 /Ti mesh electrodes for lithium-ion batteries with high capacity per unit area and outstanding mechanical behaviour. Authors

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Section: Resultssupporting

confidence: 76%

Section: Resultssupporting

confidence: 71%

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Tuning three-dimensional TiO2 nanotube electrode to achieve high utilization of Ti substrate for lithium storage

Zhang

Qing-yuan

Chou

et al. 2014

Electrochimica Acta

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“…Recently, a variety of one-dimensional (1D) TiO 2 nanomaterials, such as nanotubes, 16,18 nanowires, 21,22 and nanorods, 23 have been prepared and used as electrode materials in lithium ion batteries because of the shorter path for Li + transport and the higher surface area, which result in more side reactions with the electrolyte 15 than for bulk TiO 2 . However, there are still some obstacles to their practical application in lithium ion batteries, mainly owing to the low lithium ion and electronic conductivity of 1D TiO 2 nanomaterials ($10…”

Section: Introductionmentioning

confidence: 99%

Synthesis of uniform TiO2@carbon composite nanofibers as anode for lithium ion batteries with enhanced electrochemical performance

et al. 2012

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Very large area, uniform TiO 2 @carbon composite nanofibers were easily prepared by thermal pyrolysis and oxidization of electrospun titanium(IV) isopropoxide/polyacrylonitrile (PAN) nanofibers in argon. The composite nanostructures exhibit the unique feature of having TiO 2 nanocrystals encapsulated inside a porous carbon matrix. The unique orderly-bonded nanostructure, porous characteristics, and highly conductive carbon matrix favour excellent electrochemical performance of the TiO 2 @carbon nanofiber electrode. The TiO 2 @carbon hybrid nanofibers exhibited highly reversible capacity of 206 mAh g À1 up to 100 cycles at current density of 30 mA g À1 and excellent cycling stability, indicating that the composite is a promising anode candidate for Li-ion batteries.

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“…Due to the insufficient knowledge on the conduction mechanism and the uncertainty in the involvement of such layers in the electrode process, a phenomenological approach is usually applied to account for the behaviour of these layers. Namely, a parallel RC sub-circuit is added to the [16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34] in an overwhelming majority. Another concept is applied by Lewandowski and coworkers [35,36] who prefer an R EL -Z W -{C SEI ║ (R SEI (C DL ║R CT ))} type equivalent circuit, which exhibits time constants in the same number as the circuits shown in Figs.…”

Section: Electrochemical Impedance Spectroscopy (Eis) Is a Well-estabmentioning

confidence: 99%

A systematic approach to the impedance of surface layers with mixed conductivity forming on electrodes

Péter

2013

J Solid State Electrochem

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-Electrode impedance can be evaluated on the basis of the electrode reaction kinetics in many systems, even for complicated electrode reactions. However, when a surface layer is present on the electrode surface, the theoretically well-established impedance model of the electrode reaction is often completed with phenomenological equivalent circuit elements in order to achieve the number of time constants as derived from the electrode impedance spectra measured In these cases, the meaning of the phenomenological equivalent circuit elements are often unclear, though the presence of these elements is helpful to describe the system throughout the frequency domain used for the measurement. In the present work, an attempt will be shown to separate the effect of the electronic and ionic charge transfer in a surface layer and to identify the appropriate equivalent circuits. Examples are shown from the fields of lithium-ion batteries where a solid electrolyte interface as a surface layer is present at the negative electrode and the contribution of various charge carriers may be of importance.2

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Preparation and electrochemical characterization of TiO2 nanowires as an electrode material for lithium-ion batteries

Cited by 140 publications

References 41 publications

Tuning three-dimensional TiO2 nanotube electrode to achieve high utilization of Ti substrate for lithium storage

Tuning three-dimensional TiO2 nanotube electrode to achieve high utilization of Ti substrate for lithium storage

Synthesis of uniform TiO2@carbon composite nanofibers as anode for lithium ion batteries with enhanced electrochemical performance

A systematic approach to the impedance of surface layers with mixed conductivity forming on electrodes

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