1.太原理工大学材料科学与工程学院;2.太原理工大学材料学院
山西省自然科学基金资助(201801D221140, 201801D121099),山西省人才专项(优秀人才科技创新)(201705D2011007),山西省科学仪器设备共享服务平台项目(201805D141005)
- Liu Jiameng 1
- Guo Fei 1
- Zhang Wanggang 1
- Wang Hongxia 2
College of Materials Science and Engineering,Taiyuan University of Technology, Key Laboratory of Interface Science and Engineering in Advanced Materials,Ministry of Education,Taiyuan Shanxi
Funded by the Natural Science Foundation of Shanxi Province(201801D221140, 201801D121099),Talent Project of Shanxi Province(201705D2011007),Shanxi Scientific Instrument and Equipment Sharing Service Platform Project(201805D141005)
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本文通过将水热碳化法和阳极氧化法相结合制备了具有良好电化学性能的无定型碳包覆的混晶型TiO2纳米环阵列(C@TNTs)。利用扫描电镜(SEM)、拉曼光谱(Raman)、X射线衍射(XRD)、透射电镜(TEM)和X射线光电子能谱(XPS)及电化学测试等表征方法对未修饰的TNTs试样和在550 °C、650 °C和750 °C退火温度下得到无定形碳修饰的C@TNTs分别进行了表征分析。结果表明：水热碳化法可以将厚度约为3.4~6.5 nm无定型碳层均匀地包覆在TiO2纳米管阵列上，但却不会影响其形貌和结构；其中C@TNTs-550、C@TNTs-650和C@TNTs-750的放电比容量分别为2.83 mF·cm-2、6.52 mF·cm-2和1.48 mF·cm-2，相较于未修饰前的TNTs分别提升了27、62和14倍；此外，在TiO2纳米管阵列中引入一定量的金红石相有利于其电化学性能的提升。
In this paper, an amorphous carbon-coated mixed-crystal TiO2 nanoring array (C@TNTs) with good electrochemical properties was prepared by combining the hydrothermal carbonization method and anodizing method. Scanning electron microscopy (SEM), Raman spectroscopy (Raman), X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and electrochemical methods were used to characterize and analyze respectively the unmodified TNTs sample and the C@TNTs samples that obtained at annealing temperatures of 550 °C, 650 °C and 750 °C. The results show that the hydrothermal carbonization method can uniformly coat an amorphous carbon layer with a thickness of about 3.4 to 6.5 nm on the TiO2 nanotube array, but it will not affect its morphology and structure. The specific discharge capacities of C@TNTs-550, C@TNTs-650 and C@TNTs-750 are 2.83 mF·cm-2, 6.52 mF·cm-2and 1.48 mF·cm-2, which are 27, 62 and 14 times higher than the unmodified TNTs, respectively. What’s more, the introduction of a certain rutile phase in TiO2 nanotube array is conducive to the improve its electrochemical performance.
引用本文
刘佳孟,郭飞,张王刚,王红霞.无定型碳包覆的TiO2纳米管阵列的制备及表征[J].稀有金属材料与工程,2020,49(12):4303~4310.[Liu Jiameng, Guo Fei, Zhang Wanggang, Wang Hongxia. Preparation and characterization of TiO2 nanotube arrays coated with amorphous carbon[J]. Rare Metal Materials and Engineering,2020,49(12):4303~4310.]
DOI：10.12442/j. issn.1002-185X.20191074
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- 收稿日期:2019-12-19
- 最后修改日期:2020-02-15
- 录用日期:2020-02-21
- 在线发布日期: 2021-01-13