High performance lithium-ion cells using one dimensional electrospun TiO2 nanofibers with spinel cathode

RSC Advances ◽  
2012 ◽  
Vol 2 (21) ◽  
pp. 7983 ◽  
Author(s):  
P. Suresh Kumar ◽  
V. Aravindan ◽  
J. Sundaramurthy ◽  
V. Thavasi ◽  
S.G. Mhaisalkar ◽  
...  
Keyword(s):  
High Performance ◽  
Lithium Ion ◽  
Tio2 Nanofibers ◽  
One Dimensional ◽  
Lithium Ion Cells ◽  
Spinel Cathode

A novel strategy to construct high performance lithium-ion cells using one dimensional electrospun nanofibers, electrodes and separators

Nanoscale ◽  
2013 ◽  
Vol 5 (21) ◽  
pp. 10636 ◽  
Author(s):  
Vanchiappan Aravindan ◽  
Jayaraman Sundaramurthy ◽  
Palaniswamy Suresh Kumar ◽  
Nageswaran Shubha ◽  
Wong Chui Ling ◽  
...  
Keyword(s):  
High Performance ◽  
Lithium Ion ◽  
Electrospun Nanofibers ◽  
One Dimensional ◽  
Lithium Ion Cells ◽  
Novel Strategy

High Performance N-Doped Mesoporous Carbon Decorated TiO2 Nanofibers as Anode Materials for Lithium-Ion Batteries

2013 ◽  
Vol 117 (16) ◽  
pp. 8092-8098 ◽  
Author(s):  
Myung-Hyun Ryu ◽  
Kyu-Nam Jung ◽  
Kyung-Hee Shin ◽  
Kyoo-Seung Han ◽  
Sukeun Yoon
Keyword(s):  
Lithium Ion Batteries ◽  
Mesoporous Carbon ◽  
Anode Materials ◽  
High Performance ◽  
Lithium Ion ◽  
Tio2 Nanofibers

Electrospinning preparation of one-dimensional Co2+-doped Li4Ti5O12 nanofibers for high-performance lithium ion battery

Ionics ◽  
2018 ◽  
Vol 24 (7) ◽  
pp. 1887-1894 ◽  
Author(s):  
Xueyang Ji ◽  
Dong Li ◽  
Qifang Lu ◽  
Enyan Guo ◽  
Linbing Yao ◽  
...  
Keyword(s):  
Lithium Ion Battery ◽  
High Performance ◽  
Lithium Ion ◽  
One Dimensional

Self-templating synthesis of silicon nanorods from natural sepiolite for high-performance lithium-ion battery anodes

2018 ◽  
Vol 6 (15) ◽  
pp. 6356-6362 ◽  
Author(s):  
Qingze Chen ◽  
Runliang Zhu ◽  
Shaohong Liu ◽  
Dingcai Wu ◽  
Haoyang Fu ◽  
...  
Keyword(s):  
Porous Structure ◽  
Lithium Ion Battery ◽  
High Performance ◽  
Synthesis Method ◽  
Lithium Ion ◽  
Hierarchical Porous Structure ◽  
One Dimensional ◽  
Hierarchical Porous ◽  
Templating Synthesis

One-dimensional silicon nanorods with a hierarchical porous structure were synthesized from natural sepiolite by a simple self-templating synthesis method.

scholarly journals Synthesis of One-Dimensional Mesoporous Ag Nanoparticles-Modified TiO2 Nanofibers by Electrospinning for Lithium Ion Batteries

Materials ◽  
2019 ◽  
Vol 12 (16) ◽  
pp. 2630 ◽  
Author(s):  
Yuyao Zhang ◽  
Jun Li ◽  
Wenyao Li ◽  
Danning Kang
Keyword(s):  
Electron Microscopy ◽  
Electrochemical Performance ◽  
Discharge Capacity ◽  
Ag Nanoparticles ◽  
Electronic Conductivity ◽  
Lithium Ion ◽  
Initial Value ◽  
Tio2 Nanofibers ◽  
One Dimensional ◽  
Pristine Tio2

TiO2 is regarded as a prospective electrode material owing to its excellent electrochemical properties such as the excellent cycling stability and the high safety. However, its low capacity and low electronic conductivity greatly restrict the further improvement in electrochemical performance. A new strategy was put forward to solve the above defects involved in TiO2 in which the low capacity was enhanced by nanomerization and porosity of TiO2, and the low electronic conductivity was improved by introducing Ag with a high conductivity. One-dimensional mesoporous Ag nanoparticles-embedded TiO2 nanofibers (Ag@TiO2 nanofibers) were successfully synthesized via a one-step electrospinning process combined with subsequent annealing treatment in this study. The microstructure and morphology of mesoporous TiO2@Ag nanofibers were confirmed by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and nitrogen adsorption–desorption. TiO2 nanofibers mainly consisted of a large amount of anatase TiO2, accompanied with traces of rutile TiO2. Ag nanoparticles were uniformly distributed throughout TiO2 nanofibers and promoted the transformation of TiO2 from the anatase to the rutile. The corresponding electrochemical performances are measured by galvanostatic charge-discharge, cycle stability, rate performance, cycle voltammetry, and electrochemical impedance spectroscopy measurements in this research, with pristine TiO2 nanofibers as the reference. The results indicated that the introduction of Ag nanoparticles into TiO2 nanofibers significantly improved the diffusion coefficient of Li ions (5.42 × 10−9 cm2⋅s−1 for pristine TiO2, 1.96 × 10−8 cm2⋅s−1 for Ag@TiO2), and the electronic conductivity of TiO2 (1.69 × 10−5 S⋅cm−1 for pristine TiO2, and 1.99 × 10−5 S⋅cm−1 for Ag@TiO2), based on which the comprehensive electrochemical performance were greatly enhanced. The coulombic efficiency of the Ag@TiO2 nanofibers electrode at the first three cycles was about 56%, 93%, and 96%, which was higher than that without Ag (48%, 66%, and 79%). The Ag@TiO2 nanofibers electrode exhibited a higher specific discharge capacity of about 128.23 mAh⋅g−1 when compared with that without Ag (72.76 mAh·g−1) after 100 cycles at 100 mA·g−1. With the current density sharply increased from 40 mA·g−1 to 1000 mA·g−1, the higher average discharge capacity of 56.35 mAh·g−1 was remained in the electrode with Ag, when compared with the electrode without Ag (average discharge capacity of about 12.14 mAh·g−1). When the current density was returned to 40 mA·g−1, 80.36% of the initial value was returned (about 162.25 mAh·g−1) in the electrode with Ag, which was evidently superior to that without Ag (about 86.50 mAh·g−1, only 55.42% of the initial value). One-dimensional mesoporous Ag@TiO2 nanofibers can be regarded as a potential and promising candidate as anode materials for lithium ion batteries.

Fabrication of Mesoporous Graphene@Ag@TiO2 Composite Nanofibers Via Electrospinning as Anode Materials for High-Performance Li-Ion Batteries

NANO ◽  
2021 ◽  
pp. 2150119
Author(s):  
M. M. Xia ◽  
J. Li ◽  
Y. Y. Zhang ◽  
D. N. Kang ◽  
Y. L. Zhang
Keyword(s):  
Anode Material ◽  
Discharge Capacity ◽  
Anode Materials ◽  
High Performance ◽  
Composite Nanofibers ◽  
Electrochemical Impedance ◽  
Electronic Conductivity ◽  
Lithium Ion ◽  
One Dimensional ◽  
Practical Applications

Nanosized TiO2 has been actively developed as a low-cost and environment-friendly anode material for lithium-ion batteries (LIBs), but its poor electronic conductivity seriously restricts its practical applications. This drawback is addressed in this work by the fabrication of one-dimensional mesoporous graphene@Ag@TiO2 composite nanofibers as anode materials for high-performance LIBs. The materials were prepared via electrospinning combined with annealing treatment, and the effects of graphene addition on the microstructure and electrochemical performance of the resulting mesoporous graphene@Ag@TiO2 nanofibers were investigated in detail. Ag@TiO2 nanofibers with the optimal amount of graphene displayed a maximum initial discharge capacity of [Formula: see text] at [Formula: see text] and retained a discharge capacity of [Formula: see text] at [Formula: see text] after 100 cycles. These results reflect the excellent cycling stability of the material. The average specific discharge capacity of the nanofibers ([Formula: see text] at [Formula: see text] was two-fold higher than that of samples without graphene, and their discharge capacity returned to [Formula: see text] (approximately [Formula: see text] for other nanofibers) when the current density was recovered to the initial value ([Formula: see text]. Electrochemical impedance spectroscopic measurements confirmed that the conductivity of the electrode was [Formula: see text], which is higher than that of bare mesoporous Ag@TiO2 ([Formula: see text]). Thus, one-dimensional mesoporous graphene@Ag@TiO2 nanofibers can be regarded as a promising anode material for LIBs.

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