Fabrication and electrochemical properties of three-dimensional net architectures of anatase TiO2 and spinel Li4Ti5O12 nanofibers

Lu, Hongbin; Zeng, Wei; Li, Yuesheng; Fu, Zheng‐Wen

doi:10.1016/j.jpowsour.2006.11.009

Cited by 70 publications

(51 citation statements)

References 18 publications

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“…15e and f. It is found that the aligned fiber arrays show highly anisotropic electrical and optical behavior, 127 and have potential applications in optical polarizer, 127 sensitive ultraviolet nanosensors, 131 and 3D batteries. 134 Besides solid nanofibers, hollow semiconductor fibers with high orientation can also be fabricated by combination of this gapping method with coaxial electrospinning 138 or electrospun polymer nanofiber templates method. [139][140][141] For example, Li and Xia 138 prepared hollow TiO 2 nanofibers by electrospinning two immiscible liquids (e.g.…”

Section: Gapping Methodmentioning

confidence: 99%

Recent advances in large-scale assembly of semiconducting inorganic nanowires and nanofibers for electronics, sensors and photovoltaics

et al. 2012

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Semiconducting inorganic nanowires (NWs), nanotubes and nanofibers have been extensively explored in recent years as potential building blocks for nanoscale electronics, optoelectronics, chemical/biological/ optical sensing, and energy harvesting, storage and conversion, etc. Besides the top-down approaches such as conventional lithography technologies, nanowires are commonly grown by the bottom-up approaches such as solution growth, template-guided synthesis, and vapor-liquid-solid process at a relatively low cost. Superior performance has been demonstrated using nanowires devices. However, most of the nanowire devices are limited to the demonstration of single devices, an initial step toward nanoelectronic circuits, not adequate for production on a large scale at low cost. Controlled and uniform assembly of nanowires with high scalability is still one of the major bottleneck challenges towards the materials and device integration for electronics. In this review, we aim to present recent progress toward nanowire device assembly technologies, including flow-assisted alignment, Langmuir-Blodgett assembly, bubble-blown technique, electric/magnetic-field-directed assembly, contact/roll printing, planar growth, bridging method, and electrospinning, etc. And their applications in high-performance, flexible electronics, sensors, photovoltaics, bioelectronic interfaces and nano-resonators are also presented.

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Section: Gapping Methodmentioning

confidence: 99%

Recent advances in large-scale assembly of semiconducting inorganic nanowires and nanofibers for electronics, sensors and photovoltaics

et al. 2012

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“…450 mAh/g) [265] . Also, MgO nanofibers, LiCoO 2 -MgO coresheath nanofibers and Li 4 Ti 5 O 12 nanofibers were investigated as electrodes in lithium ion batteries [266][267][268] .…”

Section: Batteriesmentioning

confidence: 99%

Applications of electrospun nanofibers

et al. 2008

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“…One is poor electronic and ionic conductivity, which leads to poor rate capability. 3,4 In addition, a number of strategies have been implemented to overcome the low electrical conductivity and to further improve the power performance of Li 4 Ti 5 O 12 , including nanosized materials, [5][6][7] design of unique configurations, [8][9][10][11] carbon coating, [12][13][14] 3d-elements doping at Ti sites, [15][16][17] rare earth doping, 18 and coating with noble metal nano-particles, oxides or high conductive phase such as Ag 19 , Cu 2 O 20 and TiN phase, 3 which are expected to solve the challenge with good cyclic performance as well as to maintain a high rate performance.…”

mentioning

confidence: 99%

Dual Functions of Carbon in Li₄Ti₅O₁₂/C Microspheres

Lei

Wu²,

Luo

et al. 2014

J. Electrochem. Soc.

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Spinel Li 4 Ti 5 O 12 has become an alternative material to replace graphite anodes in terms of solving safety issues and improving battery life-time. Unfortunately, as Li 4 Ti 5 O 12 is an insulator, the low electrical conductivity becomes a major drawback, as it is unfavorable to higher rate capability. In addition to the low electronic conductivity, severe gassing during charge/discharge cycles is a critical but often-overlooked problem of Li 4 ExperimentalMaterials synthesis.-Anatase TiO 2 (220 nm in average particle diameter and 99.5% in purity, Hangzhou Wanjing New Material Co., Ltd) and Li 2 CO 3 (99.9% in purity, Shanghai China Lithium Industrial Co., Ltd.) were used as raw materials. The starting coarse Li 4 Ti 5 O 12 was prepared by a solid-state reaction method as described in a previous work. 26,27 The stoichiometric amounts of Li 2 CO 3 and anatase TiO 2 with molar ratio of Li: Ti = 0.82:1 were mixed with ethanol as dispersant by planetary ballmilling. The ball-milled mixture was heated in a furnace at 800• C in air for 18 h to obtain the coarse materials were first ball-milled without a carbon source and with 5 wt% pitch as a carbon source using water as a dispersant for 1.5 h, respectively. The resultant slurry was then spray dried to obtain the precursors individually. Finally, two precursors were all annealed at 650• C for 6 h in an Ar atmosphere to obtain the final materials.Characterization.-X-ray diffraction (XRD) patterns of the samples were recorded on a Rigaku diffractometer using Cu Kα irradiation. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) images were obtained on a Nova NanoSEM 430 and Tecnai F20.

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Fabrication and electrochemical properties of three-dimensional net architectures of anatase TiO2 and spinel Li4Ti5O12 nanofibers

Cited by 70 publications

References 18 publications

Recent advances in large-scale assembly of semiconducting inorganic nanowires and nanofibers for electronics, sensors and photovoltaics

Recent advances in large-scale assembly of semiconducting inorganic nanowires and nanofibers for electronics, sensors and photovoltaics

Applications of electrospun nanofibers

Dual Functions of Carbon in Li₄Ti₅O₁₂/C Microspheres

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Fabrication and electrochemical properties of three-dimensional net architectures of anatase TiO2 and spinel Li4Ti5O12 nanofibers

Cited by 70 publications

References 18 publications

Recent advances in large-scale assembly of semiconducting inorganic nanowires and nanofibers for electronics, sensors and photovoltaics

Recent advances in large-scale assembly of semiconducting inorganic nanowires and nanofibers for electronics, sensors and photovoltaics

Applications of electrospun nanofibers

Dual Functions of Carbon in Li4Ti5O12/C Microspheres

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Dual Functions of Carbon in Li₄Ti₅O₁₂/C Microspheres