Synthesis and Characterization of Stable and Binder‐Free Electrodes of TiO<sub>2</sub> Nanofibers for Li‐Ion Batteries

Tammawat, Phontip; Meethong, Nonglak

doi:10.1155/2013/413692

Cited by 17 publications

(16 citation statements)

References 23 publications

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“…A binder-free electrode composed of TiO 2 nanofibers was prepared by an electrospinning technique followed by a calcination step at 400 • C in air [95]. The TiO 2 nanofibers showed a specific capacity of 175 mAh g −1 at a current rate of 0.3 C with a Coulombic efficiency between 96% and 100% over 50 cycles.…”

Section: Tio 2 Nanorods Nanoneedles Nanowires and Nanofibersmentioning

confidence: 99%

Current Advances in TiO2-Based Nanostructure Electrodes for High Performance Lithium Ion Batteries

2018

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The lithium ion battery (LIB) has proven to be a very reliably used system to store electrical energy, for either mobile or stationary applications. Among others, TiO 2-based anodes are the most attractive candidates for building safe and durable lithium ion batteries with high energy density. A variety of TiO 2 nanostructures has been thoroughly investigated as anodes in LIBs, e.g., nanoparticles, nanorods, nanoneedles, nanowires, and nanotubes discussed either in their pure form or in composites. In this review, we present the recent developments and breakthroughs demonstrated to synthesize safe, high power, and low cost nanostructured titania-based anodes. The reader is provided with an in-depth review of well-oriented TiO 2-based nanotubes fabricated by anodic oxidation. Other strategies for modification of TiO 2-based anodes with other elements or materials are also highlighted in this report.

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Section: Tio 2 Nanorods Nanoneedles Nanowires and Nanofibersmentioning

confidence: 99%

Current Advances in TiO2-Based Nanostructure Electrodes for High Performance Lithium Ion Batteries

2018

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“…One dimensional anatase TiO 2 nanofiber anodes were used as an anode active material in Li ion batteries and exhibited a high lithium storage capacity, a stable cycle life, and good rate capability [54]. Two dimensional TiO 2 nanosheets have been shown to exhibit the superior capacities, improved cycling stability and rate capabilities, owing to unique exposed facets, shortened path, and reserved porous structures [55][56][57].…”

Section: Application Of Tio 2 In Energy Storagementioning

confidence: 99%

Applications of Titanium Dioxide Materials

Xiao-ping¹

2022

Titanium Dioxide - Advances and Applications

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Titanium dioxide (TiO2) is a stable, non-toxic inorganic material. Because of very high refractive index, TiO2 has been widely used as a white pigment. The optimal particle sizes of TiO2 for pigment applications are around 250 nm. The pigmentary applications of TiO2 can be found in many common products such as paints, plastics, paper and ink. Global titanium dioxide pigment sales have reached several million tons annually. Titanium dioxide is also a semiconducting material. When excited by photons which have energy equal to or higher than the band gap of TiO2, electron/hole pairs can be generated. The dynamics of the photo-generated electron/hole pairs of TiO2 is fundamentally important to its photocatalytic properties. More recently, nano-structured TiO2 has raised a great deal of interests in research after the discoveries of the important potentials for applications. The enormous efforts have been put in the preparation, characterization, scientific understandings, and modifications of the photocatalytic properties of TiO2. The applications of nano-structured TiO2 can be now found in a wide range of areas including electronic materials, energy, environment, health & medicine, catalysts, etc. This chapter has discussed and highlighted the development of the applications of titanium dioxide materials in many of those areas.

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“…The nanoweb achieved 188 mA h g −1 after 100 cycles at 0.2C, retaining 90.5% of its original charge. Tammawat and Meethong [131] also used electrospinning to produce TiO 2 nanofibers.…”

Section: Binder-free Electrode Fabricationmentioning

confidence: 99%

Novel Mesoporous Nanotitania/Carbon Composite Electrodes for Electrochemical Energy Storage

et al. 2013

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The development of novel scalable nanoscale materials and fabrication techniques for high performance TiO 2 Li-ion electrodes is investigated in this thesis. The development and study of the novel fabrication methods is approached from the stand point of a binder-free electrode, and its comparison to standard binder-based electrodes, making use of commercial P25 TiO 2 product as active material. The characterization of novel titania synthesized by manipulating the parameters of an aqueous process, is performed for two phases of TiO 2 , namely anatase and brookite, based on comprehensive nanocrystal morphological and electrochemical property assessment. Finally all is brought together by investigating the application of the novel fabrication protocol to the aqueous synthesized anatase to engineer binderfree 3-dimensional electrodes, and studying their Li-ion intercalation performance.The fabrication of binder-free P25 nanotitania/carbon composite electrodes is pursued via formulating pastes and controlled sintering yielding enhanced electrochemical performance in comparison to standard binder-based methods using the same active and conductive components. The new paste formulation and sintering sequence provides a significant increase in dispersion of carbon due to smaller agglomerate size resulting in enhanced inter-particle (active-conduction) mixing and packing density than standard binder-based electrodes. Cyclic voltammetry and galvanostatic charge/discharge proved that the binder-free electrodes possess improved conductivity, specific capacity, and reversibility, as compared to binderbased electrodes. Most significantly, the capacity retention of the binder-free electrode was much higher than that of the binder-based electrode at 94 and 53%, respectively.iii Using an aqueous solution based synthesis process, 2-dimensional brookite nanoplatelets and 6 nm anatase nanoparticles are obtained and examined for their physical and electrochemical properties as Li-ion host materials. Brookite, itself is particularly interesting, as it is the least understood of the nanoscale TiO 2 phases, especially in the form of 2-D crystal structures that are deemed advantageous for Liion diffusion. This study provides insight into the lithiation mechanism of brookite, concluding that a solid-solution is formed upon lithiation corresponding to Li 0.5 TiO 2 that is isostructural with brookite. Further, the brookite nanoplatelets are discovered to undergo unique crystal structure enhancement upon cycling that allows them to quickly relax upon delithiation in an extremely efficient (>99.7% Coulombic efficiency) reversible manner translating to excellent Li-ion intercalation stability.Anatase nanoparticle are described in terms of crystallinity and surface area. Asprepared anatase has low crystallinity (∼70%), but high surface area (∼222 m 2 g −1 ), and when annealed at 300°C, the crystallinity increases to ∼90% but the surface area drops to 120 m 2 g −1 . Electrochemically, this allows the annealed sample with higher crystall...

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Synthesis and Characterization of Stable and Binder‐Free Electrodes of TiO₂ Nanofibers for Li‐Ion Batteries

Cited by 17 publications

References 23 publications

Current Advances in TiO2-Based Nanostructure Electrodes for High Performance Lithium Ion Batteries

Current Advances in TiO2-Based Nanostructure Electrodes for High Performance Lithium Ion Batteries

Applications of Titanium Dioxide Materials

Novel Mesoporous Nanotitania/Carbon Composite Electrodes for Electrochemical Energy Storage

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Synthesis and Characterization of Stable and Binder‐Free Electrodes of TiO2 Nanofibers for Li‐Ion Batteries

Cited by 17 publications

References 23 publications

Current Advances in TiO2-Based Nanostructure Electrodes for High Performance Lithium Ion Batteries

Current Advances in TiO2-Based Nanostructure Electrodes for High Performance Lithium Ion Batteries

Applications of Titanium Dioxide Materials

Novel Mesoporous Nanotitania/Carbon Composite Electrodes for Electrochemical Energy Storage

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Synthesis and Characterization of Stable and Binder‐Free Electrodes of TiO₂ Nanofibers for Li‐Ion Batteries