Preparation and characterization of TiO2-NTs/SnO2-Sb electrodes by electrodeposition
Preparation and characterization of TiO2-NTs/SnO2-Sb electrodes by electrodeposition
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DOI：
10.1016/j.jelechem.2010.08.004
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发表时间：
2010-10-01
影响因子：
4.5
通讯作者：
Li, Jiansheng
中科院分区：
文献类型：
--
作者：
Chen, Yong;Hong, Lei;Li, Jiansheng
通过阳极氧化、电沉积和退火制备了新型的SnO2掺杂电极（TiO2-NTs/SnO2- sb）。采用场发射扫描电镜（FE-SEM）对Sb和Sn电沉积后的TiO2纳米管（TiO2- nts）进行了表征。与传统热分解法制备的sb掺杂SnO2涂层相比，电沉积法制备的sb掺杂SnO2涂层更加致密。x射线衍射（XRD）分析表明，电沉积法制备的sb掺杂SnO2涂层与Ti衬底上形成的TiO2-NTs结合牢固。加速使用寿命试验表明，电沉积工艺提高了sb掺杂SnO2电极的电化学稳定性。循环伏安分析表明，TiO2-NTs/SnO2-Sb电极具有较高的析氧过电位和较高的电化学孔隙度。此外，还研究了电沉积法制备的tio2 - nt /SnO2-Sb电极的增强稳定化机理。(C) 2010 Elsevier B.V.版权所有
The novel Sb-doped SnO2 electrodes (TiO2-NTs/SnO2-Sb) have been prepared by anodization, electrodeposition and annealing. TiO2 nanotubes (TiO2-NTs) after Sb and Sn electrodeposited were characterized using field-emission scanning electron microscopy (FE-SEM). In contrast with the traditional Sb-doped SnO2 coating prepared by thermal decomposition, the Sb-doped SnO2 coating prepared by electrodeposition processes show more compact. X-ray diffraction (XRD) analysis indicates that the Sb-doped SnO2 coating prepared by electrodeposition processes are firmly combined with the TiO2-NTs formed on the Ti substrate. Accelerated service life tests reveal that the electrodeposition processes enhance the electrochemical stability of the Sb-doped SnO2 electrode. The cyclic voltammetry analysis shows that TiO2-NTs/SnO2-Sb electrodes have higher overpotential for oxygen evolution and higher electrochemical porosity. Besides, the enhanced stabilization mechanism of the TiO2-NTs/SnO2-Sb electrode prepared by electrodeposition processes has been studied. (C) 2010 Elsevier B.V. All rights reserved.