Facile synthesis of one-dimensional zinc vanadate nanofibers for high lithium storage anode material
Facile synthesis of one-dimensional zinc vanadate nanofibers for high lithium storage anode material
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简易合成一维钒酸锌纳米纤维用于高储锂负极材料
DOI：
10.1016/j.jallcom.2015.07.265
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发表时间：
2015-11-15
影响因子：
6.2
通讯作者：
Qiao, Hui
中科院分区：
文献类型：
--
作者：
Luo, Lei;Fei, Yaqian;Qiao, Hui
采用静电纺丝结合退火工艺制备了一维钒酸锌（α-Zn 2 V2 O 7）纳米纤维。当用作锂离子电池（LIB）的阳极材料时，电纺1D α-Zn 2 V2 O 7纳米纤维在50 mA g（-1）的电流密度下100次循环后表现出类似于708 mAh g（-1）的可逆容量。甚至在较高的电流密度下也实现了良好的倍率性能。当在2000 mA g（-1）的电流密度下循环时，电极仍然可以显示出类似于311 mAh g（-1）的可逆容量。优异的循环性能和倍率性能可能是由于一维介孔结构、介孔结构和相对大的比表面积，其可以提供短的离子扩散路径和连续的电子传输。因此，这项工作提出了一个简单而有效的方法来制造一维α-Zn 2 V2 O 7纳米纤维，这是有前途的高性能阳极材料的LIB。(C)2015 Elsevier B. V.版权所有。
One-dimensional (1D) zinc vanadate (alpha-Zn2V2O7) nanofibers have been synthesized through electrospinning combined with an annealing process. When used as anode material for lithium-ion batteries (LIBs), electrospun 1D alpha-Zn2V2O7 nanofibers exhibit a reversible capacity of similar to 708 mAh g(-1) after 100 cycles at a current density of 50 mA g(-1). A good rate capability is also achieved even at higher current densities. When cycled at a current density of 2000 mA g(-1), the electrode can still show a reversible capacity of similar to 311 mAh g(-1). The excellent cycle performance and rate capability may be due to the 1D nanofiber architectures, mesoporous structures, and relatively large specific surface area, which can provide a short ion diffusion path and continuous electron transportation. Therefore, this work presents a simple and efficient approach for fabrication of 1D alpha-Zn2V2O7 nanofibers, which are promising high-performance anode materials for LIBs. (C) 2015 Elsevier B.V. All rights reserved.