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采用阳极氧化反应,在反应时间分别为0.5、1.0、2.0、3.0及4.0 h时制备了TiO_2纳米管阵列电极,并借助扫描电子显微镜、能量色散X射线光谱仪、恒流充/放电及循环伏安技术研究了反应时间对纳米管阵列的形成过程及脱/嵌Li~+性能的影响。结果表明:当反应时间为2.0 h时,三维有序TiO_2纳米管阵列完全形成,反应时间对TiO_2纳米管的管壁厚度、管径以及管长均有影响;作为锂离子电池负极活性材料时,放电比容量随反应时间的增加而增加。
The anodic oxidation reaction was used to prepare TiO 2 nanotube array electrodes at reaction time of 0.5,1.0,2.0,3.0 and 4.0 h, respectively. Scanning electron microscopy, energy dispersive X-ray spectroscopy, constant current charge / discharge and cyclic voltammetry The effect of reaction time on the formation of nanotube arrays and the deintercalation / insertion of Li ~ + has been studied. The results show that when the reaction time is 2.0 h, the three-dimensionally ordered TiO 2 nanotube arrays are completely formed, and the reaction time affects the wall thickness, tube diameter and tube length of the TiO 2 nanotubes. As the negative electrode active material of the lithium ion battery, The specific discharge capacity increases with the reaction time.