【作者】 曹梅； 郭忠诚；

【Author】 Cao Mei,Guo Zhongcheng

【机构】 昆明理工大学理学院； 昆明理工大学能源与冶金工程学院；

【摘要】 用热分解、化学沉积和电沉积联合的方法制备了以Al为基体,以SnO₂+Sb₂O₃和SnO₂+Sb₂O₃+MnO₂为底层,以为过渡层,以为表面活性层的阳极材料,采用扫描电子显微镜（SEM）对该类电极各层表面形貌进行了研究,确定了影响表面形貌的因素,结果表明,烧结温度和涂液组成对底层形貌影响最大,烧结温度越高,表面越细小,底层表面缺陷越多,越有利于化学镀和电镀。所有涂层中,烧结温度为450℃时的不含Mn的涂层最粗糙,但以此为底层的最终电极表面晶粒最均匀、细小,通过阳极极化曲线可知,此电极析氧电位最低,催化活性最好。更多还原

【Abstract】 Aluminum substrate was coated with mixed metal oxides of SnO₂,Sb₂O₃ or SnO₂,Sb₂O₃ and MnO₂.These coatings were prepared by thermal decomposition of the metal chlorides and alkoxides and applied to the aluminum substrate at room temperature with a soft hair paintbrush at 450℃and 500℃respectively.Thenα-PbO₂ act used as transitional coatings those were prepared by electroless plating.β-PbO₂ act as active coatings those were prepared by electrolytic oxidation.The effects of composition of solution and thermal oxidation temperature on the microstructures of the coating were investigated by using scanning electron microscope（SEM）.The results show that the oxide coating without Mn prepared at 450℃is coarsest among all the coatings.The surface ofα-PbO₂ andβ-PbO₂ deposited on those oxide coatings are compact and even.The electrocatalyst of the electrode is optimumest.更多还原