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以三氯化钌和三氯化铈为原料,以无水乙醇为溶剂,采用热分解法在钛基材上制备了Ti/RuO2-CeO2二元氧化物涂层电极材料,利用XRD,SEM,HR-TEM分析方法对涂层组织结构进行表征,通过循环伏安和充放电曲线来研究涂层的超电容性质。结果表明,300℃烧结制备的电极可获得最大的比电容;烧结温度低于或者超过300℃,电极的超电容性能不佳。分析表明,Ti/RuO2-CeO2的超电容性能与其结构密切相关,氧化物的结构未稳定或发育良好,均不利于提高超电容性能。300℃时涂层形成带有纳米级微晶的非晶组织,获得了高的活性点数和电化学粗糙度。
The electrode material of Ti / RuO2-CeO2 binary oxide coating was prepared on titanium substrate by thermal decomposition using ruthenium trichloride and cerium trichloride as raw materials and anhydrous ethanol as solvent. The microstructure of the coating was characterized by HR-TEM analysis. The supercapacitor properties of the coating were investigated by cyclic voltammetry and charge-discharge curves. The results show that the maximum specific capacitance of the electrode prepared at 300 ℃ can be obtained. When the sintering temperature is below or above 300 ℃, the ultracapacitor performance of the electrode is not good. The analysis shows that the supercapacitive property of Ti / RuO2-CeO2 is closely related to its structure, and the structure of the oxide is not stable or well developed, which is unfavorable for improving the supercapacitive performance. At 300 ℃, the coating formed amorphous structure with nano-sized crystallites, and high activity points and electrochemical roughness were obtained.