A porous vanadium pentoxide nanomaterial as cathode material for rechargeable lithium batteries

被引：37
|
作者：
Yu, J. J. [1 ]
Yang, J. [1 ]
Nie, W. B. [1 ]
Li, Z. H. [1 ]
Liu, E. H. [1 ]
Lei, G. T. [1 ]
Xiao, Q. Z. [1 ]
机构：
[1] Xiangtan Univ, Coll Chem, Minist Educ, Key Lab Environm Friendly Chem & Applicat, Xiangtan 411105, Hunan Province, Peoples R China
来源：
ELECTROCHIMICA ACTA | 2013年 / 89卷
关键词：
Electrospinning; Template; Vanadium oxide; Lithium batteries; HIGH-PERFORMANCE; ELECTROCHEMICAL PROPERTIES; ENERGY-CONVERSION; LI-INSERTION; V2O5; MICROSPHERES; CHALLENGES; ELECTRODES; ANODE;
D O I：
10.1016/j.electacta.2012.11.032
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
A porous vanadium pentoxide (V2O5) nanomaterial was prepared by using the electrospun PMMA fibers as a template, which could be removed by annealing at high temperature leaving tube-like pores with 1 mu m in diameter. It is composed of numerous rice-like nanoparticles in 50-100 nm size. In the potential range of 4.0-2.0 V (vs. Li/Li+), it can deliver a high reversible capacity of 283 mAh g(-1) at 0.2C rate and exhibits an excellent rate capability (104 mAh g(-1) at 12C rate). Even cycled at the 4C rate, the discharge capacity still remains 85% of the initial one over 300 cycles, showing an excellent cycling performance. The results suggest the obtained V2O5 nanomaterial could develop into a promising cathode material for rechargeable lithium batteries. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：292 / 299
页数：8
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