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首页> 外文期刊>International Journal of Electrochemical Science >Hydrothermal Synthesis and Electrochemical Properties of TiO2 Nanotubes as an Anode Material for Lithium Ion Batteries
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Hydrothermal Synthesis and Electrochemical Properties of TiO2 Nanotubes as an Anode Material for Lithium Ion Batteries

机译：TiO 2 纳米管作为锂离子电池负极材料的水热合成及电化学性能

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摘要

In this work, TiO2 nanotubes were successfully prepared by using TiO2 nanoparticles as the precursor through a simple hydrothermal method followed by calcination. The phase structure and surface morphologies of as-prepared TiO2 nanotubes were identified by X-ray diffraction (XRD), field- emission scanning electron microscope (FESEM) and transmission electron microscope (TEM) measurements. The as-prepared TiO2 nanotubes presented an obvious one-dimensional nanotube structure with a tube diameter of 4~8 nm and a length of 2~10 μm. The as-prepared TiO2 nanotubes anode delivered an initial discharge capacity of 300 mAh g-1 at 0.3 C, and retained a discharge capacity of 162 mAh g-1 (about 54% of the intial discharge capacity) after 100 cycles. The electrochemical measurements demonstrated that the as-prepared TiO2 nanotubes anode offered a relatively high reversible capacities and good cycling stabilities, which could be attributed to the large surface area of nanotubular structure as well as the 1D nanostructure-induced fast migration of lithium ions within TiO2 nanotubes.
机译：在这项工作中，通过简单的水热法，然后煅烧，使用TiO2纳米颗粒作为前体成功地制备了TiO2纳米管。通过X射线衍射（XRD），场发射扫描电子显微镜（FESEM）和透射电子显微镜（TEM）测量来确定所制备的TiO2纳米管的相结构和表面形态。制备的TiO2纳米管具有明显的一维纳米管结构，管直径为4〜8 nm，长度为2〜10μm。所制备的TiO2纳米管阳极在0.3 C下的初始放电容量为300 mAh g-1，在100次循环后仍保持162 mAh g-1的放电容量（约为初始放电容量的54％）。电化学测量表明，所制备的TiO2纳米管阳极具有相对较高的可逆容量和良好的循环稳定性，这可以归因于纳米管结构的大表面积以及一维纳米结构诱导的TiO2中锂离子的快速迁移。纳米管。

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