Alternative Li-Ion Battery Electrode Based on Self-Organized Titania Nanotubes
Alternative Li-Ion Battery Electrode Based on Self-Organized Titania Nanotubes
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DOI：
10.1021/cm801670u
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发表时间：
2009-01-13
影响因子：
8.6
通讯作者：
Knauth, Philippe
中科院分区：
文献类型：
--
作者：
Ortiz, Gregorio F.;Hanzu, Ilie;Knauth, Philippe
我们研究了锂离子电池替代电极的制备。活性材料由通过简单阳极氧化工艺制备的自组织TiO 2纳米管层组成。通过结构技术（扫描电子显微镜和X射线衍射）和电化学测试相结合，这种类型的纳米结构电极的性能进行了研究。研究了非晶态和晶态二氧化钛纳米管的充放电性能和循环性能。具有77 μ A·h·cm（-2）的最大面积容量，在50次循环中高达90%的良好容量保持率，纳米管TiO 2是可充电锂离子微电池的有前途的电极。
We investigate the fabrication of an alternative electrode for lithium-ion batteries. The active material consists of self-organized TiO2 nanotube layers prepared by a simple anodization process. The performances of this type of nanostructured electrode are studied by the combination of structural techniques (Scanning electron microscopy and X-ray diffraction) and electrochemical tests. The discharge/charge properties and cycling performance characteristics are studied for both amorphous and crystalline titania nanotubes. With a maximum areal capacity of 77 mu A h cm(-2), a good capacity retention up to 90% over 50 cycles, nanotubular TiO2 is a promising electrode for rechargeable Li-ion microbatteries.