Preparation and electrochemical properties of Ag-modified TiO2 nanotube anode material for lithium–ion battery

He, Benlin; Dong, Bin; Li, Hu‐Lin

doi:10.1016/j.elecom.2006.10.008

Cited by 308 publications

(85 citation statements)

References 23 publications

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“…The radius of the plot of WS 2 -1/TiSi 2 -723 is much smaller than that of TiSi 2 . The fact demonstrates that the charge transfer resistance is significantly decreased on the WS 2 -1/TiSi 2 -723 interface [41,42], which is in agreement with the results of photocurrent responses measurements. The transfer resistance decreases, so the rate of charge separation is accelerated, and the photocurrent is enhanced.…”

Section: Optical and Photoelectrochemical Propertiessupporting

confidence: 80%

WS2 as an Effective Noble-Metal Free Cocatalyst Modified TiSi2 for Enhanced Photocatalytic Hydrogen Evolution under Visible Light Irradiation

et al. 2016

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Abstract:A noble-metal free photocatalyst consisting of WS 2 and TiSi 2 being used for hydrogen evolution under visible light irradiation, has been successfully prepared by in-situ formation of WS 2 on the surface of TiSi 2 in a thermal reaction. The obtained samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectrometry (EDX), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS). The results demonstrate that WS 2 moiety has been successfully deposited on the surface of TiSi 2 and some kind of chemical bonds, such as Ti-S-W and Si-S-W, might have formed on the interface of the TiSi 2 and WS 2 components. Optical and photoelectrochemical investigations reveal that WS 2 /TiSi 2 composite possesses lower hydrogen evolution potential and enhanced photogenerated charge separation and transfer efficiency. Under 6 h of visible light (λ > 420 nm) irradiation, the total amount of hydrogen evolved from the optimal WS 2 /TiSi 2 catalyst is 596.4 µmol·g −1 , which is around 1.5 times higher than that of pure TiSi 2 under the same reaction conditions. This study shows a paradigm of developing the effective, scalable and inexpensive system for photocatalytic hydrogen generation.

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Section: Optical and Photoelectrochemical Propertiessupporting

confidence: 80%

WS2 as an Effective Noble-Metal Free Cocatalyst Modified TiSi2 for Enhanced Photocatalytic Hydrogen Evolution under Visible Light Irradiation

et al. 2016

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“…As shown in Figure 10a, the typical electrochemical impedance spectra are presented as Nyquist plots, and it is observed that the semicircle of MTGA-8 is shorter than MTG's, which demonstrates the decrease of the solid state interface layer resistance and the charge transfer resistance on the surface [55]. Therefore, the construction of the ternary structure could suppress the charge recombination, and thereby, the MTGA nanocomposite exhibits the enhanced photocatalytic performance.…”

Section: Resultsmentioning

confidence: 99%

Effective Electron Transfer Pathway of the Ternary TiO2/RGO/Ag Nanocomposite with Enhanced Photocatalytic Activity under Visible Light

et al. 2017

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Abstract:Mesoporous TiO 2 /reduced graphene oxide/Ag (TiO 2 /RGO/Ag) ternary nanocomposite with an effective electron transfer pathway is obtained by an electrostatic self-assembly method and photo-assisted treatment. Compared with bare mesoporous TiO 2 (MT) and mesoporous TiO 2 /RGO (MTG), the ternary mesoporous TiO 2 /RGO/Ag (MTGA) nanocomposite exhibited superior photocatalytic performance for the degradation of methylene blue (MB) under visible light, and the degradation rate reached 0.017 min −1 , which was 3.4-times higher than that of MTG. What is more, the degradation rate of MTGA nanocomposite after three cycle times is 91.2%, and the composition is unchanged. In addition, we found that the OH•, h + and especially O 2•− contribute to the high photocatalytic activity of MTGA for MB degradation. It is proposed that Ag nanoparticles can form the local surface plasmon resonance (LSPR) to absorb the visible light and distract the electrons into MT, and RGO can accept the electrons from MT to accelerate the separation efficiency of photogenerated carriers. The establishment of MTGA ternary nanocomposite makes the three components act synergistically to enhance the photocatalytic performance.

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“…24 Therefore, various strategies to improve the lithium ion and electronic conductivity of TiO 2 nanomaterials, such as decoration with high conductivity materials, e.g., Ag nanoparticles, 18 or dispersion of such nanoparticles into the carbon matrix, 24,25 have been reported. Furthermore, a way to improve the electrochemical lithium storage properties of 1D TiO 2 nanomaterials has been suggested, which is to enhance the porosity and surface area by forming mesopores or nanocavities, 26 and is possible due to the much shorter paths for Li + transport and larger interior surface area.…”

Section: S CM à1mentioning

confidence: 99%

“…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%

“…Nevertheless, especially in lithium-ion battery (LIB) applications, of the four common polymorphs of TiO 2 : rutile, anatase, brookite, and TiO 2 (B), 18 anatase TiO 2 has been investigated longest as a prospective electrode material because of its special crystal structure with a tetragonal body-centered space group I4 1 /1md, and the TiO 6 octahedra sharing two adjacent edges with two other octahedra. 19,20 This special three-dimensional (3D) architecture contains many open channels which facilitate the insertion/extraction of Li + during discharge/ charge.…”

Section: Introductionmentioning

confidence: 99%

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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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Preparation and electrochemical properties of Ag-modified TiO2 nanotube anode material for lithium–ion battery

Cited by 308 publications

References 23 publications

WS2 as an Effective Noble-Metal Free Cocatalyst Modified TiSi2 for Enhanced Photocatalytic Hydrogen Evolution under Visible Light Irradiation

WS2 as an Effective Noble-Metal Free Cocatalyst Modified TiSi2 for Enhanced Photocatalytic Hydrogen Evolution under Visible Light Irradiation

Effective Electron Transfer Pathway of the Ternary TiO2/RGO/Ag Nanocomposite with Enhanced Photocatalytic Activity under Visible Light

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

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