Effect of TiO2 on Hydrogen Evolution Performance of Sn-Ni Alloy Electrode
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摘要: 采用电沉积法在纯铜表面制备了Sn-Ni/TiO2复合电极，采用扫描电镜、能谱仪、激光共聚焦显微镜、阴极极化曲线和电化学阻抗谱对电极的形貌、成分、粗糙度和析氢性能进行了研究。结果表明，随着TiO2质量浓度从0 g/L增加到1.0 g/L，电极的析氢性能先增强后减弱；TiO2质量浓度为0.8 g/L时所制备的Sn-Ni/TiO2电极TiO2含量最高，表面观察到TiO2花粉状团聚物，粗糙度最大，析氢性能最佳。
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关键词:
- Sn-Ni/TiO2复合电极 /
- TiO2 /
- 电沉积 /
- 析氢性能
Abstract: The Sn-Ni/TiO2 composite electrode was prepared on the surface of pure copper by electrodeposition method.The morphology,composition,roughness and hydrogen evolution performance of the electrodes were studied by scanning electron microscopy,energy dispersive spectroscopy,laser scanning confocal microscope,cathodic polarization curve and electrochemical impedance spectroscopy.The results show that with the increase of TiO2 concentration from 0 g/L to 1.0 g/L,the hydrogen evolution performances of the electrodes are improved firstly and then weakened.The Sn-Ni/TiO2 electrode with the maximum TiO2 content is obtained at the TiO2 concentration of 0.8 g/L,and pollen-like agglomerate of TiO2 is observed on the surface of the electrode which has the largest roughness and the best hydrogen evolution performance.-
Key words:
- Sn-Ni/TiO2 composite electrode /
- TiO2 /
- electrodeposition /
- hydrogen evolution property
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