Surface Modification and Electrochemical Lithium Storage Performance of TiO2-Anatase Nanotube Arrays with CuO
Surface Modification and Electrochemical Lithium Storage Performance of TiO2-Anatase Nanotube Arrays with CuO
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CuO TiO2-锐钛矿纳米管阵列的表面修饰及电化学储锂性能
DOI：
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
Zhaolin Zhan
中科院分区：
文献类型：
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作者：
Yuhan Yao;Zhentao Yuan;Yannan Zhang;xiaohua Yu;Ju Rong;Kun Meng;Zhaolin Zhan
以乙二醇、氟化铵、盐酸、氯化铜和硝酸钠为原料，采用阳极氧化和水热法联合制备了CuO/TiO2负极材料。采用扫描电子显微镜(SEM)、透射电子显微镜(TEM)、能谱(EDS)、X射线光电子能谱(XPS)、X射线衍射(XRD)等手段研究了样品的形貌、元素分布、价态、微观相组成。此外，利用电池充放电测试系统和电化学工作站测试了Cu0/TiO2的电化学嵌锂性能。结果表明，锐钛矿型TiO2纳米管表面排列有颗粒。纳米尺寸为4nm×10nm。所制备的CuO/TiO 2 显示出良好的电性能，在0.3C倍率下的初始放电和充电容量分别为550和490mAhg。分别。 50 次循环后，储备容量为 320 mAh.g。
Anodic oxidation and hydrothermal method were jointly used to prepare CuO/TiO2 negative material which was synthesized from ethylene glycol, ammonium fluoride, hydrochloric acid, cupric chloride and sodium nitrate. Morphology, element distribution, valence state, microcosmic phase composition of the samples were investigated by scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy dispersive spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD). Furthermore, the electrochemical lithium insertion properties of Cu0/Ti02 were tested by the use of battery charge and discharge testing system and electrochemical workstation. The results show that there are particulates arrange the surface of the.anatase Ti02 nanotube. The nanometer size was 4 nm x10 nm. The as prepared Cu0/Ti02 displays plummy electric properties of initial discharge and charge capacities of 550 and 490 mAhg at the rate of 0.3C. respectively. After 50 cycles the reserve capacities is 320 mAh.g.