摘要
为研究热氧化分解温度对钛基RuO_(2)-TiO_(2)电极表面形貌、电催化活性和寿命等的影响,将三氯化钌和钛酸丁酯混合溶液在不同温度下烧结制备Ti/RuO_(2)-TiO_(2)阳极。通过扫描电镜(SEM)、X射线衍射仪(XRD)、循环伏安(CV)曲线、线性扫描伏安(LSV)曲线和加速寿命试验等表征方法研究烧结温度对Ti/RuO_(2)-TiO_(2)电极表面形貌、物相、电催化活性和寿命等性能的影响。结果表明:随着烧结温度的增加,电极涂层表面的组织结构和形貌以及电极的电催化活性和稳定性发生明显变化。随着煅烧温度的升高,制备的电极电催化活性总体呈现减小的趋势。温度低于450℃制备的电极稳定性和电催化活性较好,高于450℃制备的电极稳定性和电催化活性较差。450℃时制备的电极稳定性最好,电催化活性仅次于420℃,析氯电位为1.087 V。
For studying the effect of thermal oxidative decomposition temperature on surface morphology,electrocatalytic activities and service life of Ti/RuO_(2)-TiO_(2)electrode,the Ti/RuO_(2)-TiO_(2)anode was prepared by sintering a mixed solution of ruthenium chloride and tetra-n-butyl titanate at different temperatures.Scanning electron microscopy(SEM),X-ray diffraction(XRD),cyclic voltammetry(CV)curve,linear sweep voltammetry(LSV)curve and accelerated life test were employed to analyze the effects of calcination temperature on surface morphology,phase,electrocatalytic activities and service life of Ti/RuO_(2)-TiO_(2)electrode.Results showed that with the increases of calcination temperature,the microstructure and morphology of electrode coating surface,the electrocatalytic activity and stability of the electrode changed greatly.The increases of calcination temperature caused that the electrocatalytic activity of the prepared electrode generally decreased.Meanwhile,the stability and electrocatalytic activity of the electrode prepared below 450℃were better,and the stability and electrocatalytic activity of the electrode prepared above 450℃were poor.In contrast,the electrode obtained at 450℃possessed the optimal stability,the electrocatalytic activity of which was second only to that at 420℃,and the chlorine evolution potential was 1.087 V.
作者
冯庆
杨瑞锋
王正
闫爱玲
张玉萍
贾波
FENG Qing;YANG Rui-feng;WANG Zheng;YAN Ai-ling;ZHANG Yu-ping;JIA Bo(Taijin Industrial Electrochemical Technology Co.,Ltd.,Xi’an 710016,China)
出处
《材料保护》
CAS
CSCD
2021年第9期37-42,共6页
Materials Protection
基金
陕西省重点研发计划项目(2017ZDXM-GY-041)资助。
