论文部分内容阅读
通过动电位扫描阳极氧化成膜、恒电位预氧化成膜以及开路电位浸泡预氧化成膜3种途径分别得到了3种氧化膜各有差异的QSn7-0.2铜锡合金电极。采用光学显微分析与XRD测试,表征了各氧化膜的形貌和成分,并且利用阳极极化曲线研究了3种成膜电极在450℃Li-Na-K三元共晶熔融碳酸盐中作为惰性析氧阳极的可行性。结果表明,恒电位预氧化成膜以及开路电位浸泡预氧化成膜两种成膜方法均能够在QSn7-0.2铜锡合金阳极表面形成含SnO_2的氧化膜,该膜能够显著阻碍基体合金中Cu的阳极溶解腐蚀,并且对析氧反应具有确定的电催化性能。
Three kinds of QSn7-0.2 copper-tin alloy electrodes with different oxide films were obtained through the anodic oxidation of potentiodynamic scanning, pre-oxidation of potentiostatic film and pre-oxidation of open-circuit potential. The morphology and composition of each oxide film were characterized by optical microscopy and XRD, and the effect of three kinds of film-forming electrodes on the formation of Li-Na-K ternary eutectic molten carbonate at 450 ℃ was studied by anodic polarization curves Feasibility of inert oxygen evolution anode. The results show that the two kinds of film deposition methods, potentiostatic pre-oxidation and open-circuit immersion preoxidation, are able to form SnO2-containing oxide film on the surface of QSn7-0.2 copper-tin alloy anode. This film can significantly hinder the formation of Cu Anodic dissolution corrosion, and the oxygen evolution reaction has a certain electrocatalytic properties.