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首页> 外文期刊>RSC Advances >Study on the performance of an improved Ti/SnO2-Sb2O3/PbO2 based on porous titanium substrate compared with planar titanium substrate
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Study on the performance of an improved Ti/SnO2-Sb2O3/PbO2 based on porous titanium substrate compared with planar titanium substrate

机译：与平面钛基体相比，改进的基于多孔钛基体的Ti / SnO2-Sb2O3 / PbO2性能研究

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摘要

This present work focused on systematically studying the effect of a porous Ti substrate on the surface structure and electrochemical properties of lead dioxide electrodes prepared by anodic deposition under galvanostatic conditions. Characterization experiments, including scanning electron microscopy (SEM), X-ray diffraction (XRD), linear sweep voltammetry (LSV), cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), accelerated life time testing and a degradation experiment of methylene blue trihydrate were performed to determine the effect of different Ti substrates. Compared with the planar Ti substrate, the results showed that the porous Ti substrate decreased the grain size of lead dioxide and formed a compact and fine surface coating. The electrode had smaller crystalline particles and a more compact structure. The porous Ti/SnO2-Sb2O3/PbO2 electrode had a higher oxygen evolution overpotential, a larger active surface area and higher electrochemical activity. The lifetime of the porous Ti/SnO2-Sb2O3/PbO2 electrode (214 h) was 3.69 times higher than that of the planar Ti/SnO2-Sb2O3/PbO2 electrode (58 h). Moreover, the degradation rate constant of methylene blue trihydrate on the porous Ti substrate lead dioxide electrode (0.03868 min(-1)) was 1.52 times than that of the planar Ti substrate lead dioxide electrode (0.02542 min(-1)).
机译：这项工作的重点是系统研究多孔Ti衬底对在恒电流条件下通过阳极沉积制备的二氧化铅电极的表面结构和电化学性能的影响。表征实验，包括扫描电子显微镜（SEM），X射线衍射（XRD），线性扫描伏安法（LSV），循环伏安法（CV），电化学阻抗谱（EIS），加速寿命测试和亚甲基蓝的降解实验进行三水合物测定以确定不同的Ti底物的作用。结果表明，与平面Ti衬底相比，多孔Ti衬底减小了二氧化铅的晶粒尺寸，并形成了致密而精细的表面涂层。电极具有较小的结晶颗粒和更紧凑的结构。多孔Ti / SnO2-Sb2O3 / PbO2电极具有较高的析氧超电势，较大的活性表面积和较高的电化学活性。多孔Ti / SnO2-Sb2O3 / PbO2电极（214小时）的寿命是平面Ti / SnO2-Sb2O3 / PbO2电极（58小时）的3.69倍。此外，在多孔Ti衬底二氧化铅电极上的亚甲基蓝三水合物的降解速率常数（0.03868 min（-1））是平面Ti衬底二氧化铅电极（0.02542 min（-1））的1.52倍。

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