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反应时间对二氧化钛纳米管阵列的形成及脱嵌Li+性能的影响
作者:孟瑞晋1 侯宏英1 刘显茜2 段继祥1 刘松1 郝振亮1 廖启书1 姚远1 
单位:1. 昆明理工大学材料科学与工程学院 昆明理工大学机电工程学院 昆明650093  
关键词:阳极氧化 反应时间 三维有序二氧化钛纳米管阵列 锂离子电池 负极活性材料 
分类号:O646
出版年,卷(期):页码:2016,44(6):838-842
DOI::10.14062/j.issn.0454-5648.2016.06.09
摘要:
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TiO2 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/嵌锂性能的影响。结果表明:当反应时间为2.0 h 时,三维有序TiO2 纳米管阵列完全形成,反应时间对TiO2 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,放电比容量随反应时间的增加而增加。
TiO2 nanotube arrays were prepared via anodization for 0.5 h, 1.0 h, 2.0 h, 3.0 h and 4.0 h, respectively. The effect of anodization time on the formation and Li+ intercalation/extraction of the as-prepared TiO2 nanotube arrays was investigated by scanning electron microscropy, energy dispersive spectrometry, galvanostatic charge/discharge and cyclic voltammetry. The results show that TiO2 nanotube arrays completely are formed at the anodization time of 2.0 h, and the wall thickness, the diameter and the length of TiO2 nanotubes are affected by the anodization time. As the anode active materials of lithium ion battery, the discharge capacity gradually increases with the increase of the anodization time.
基金项目:
国家自然科学基金(51363011);教育部第46 批留学归国科研启动基金;云南省高层次引进人才工作经费(10978125);昆明理工大学重点学科建设项目(14078232);昆明理工大学先进电池膜电极材料方向团队(14078311)资助。
作者简介:
孟瑞晋(1989—),女,硕士研究生。
参考文献:
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