Abstract In this study, the influence of Co2+ (2 g/L) on the electrochemical behavior of cast Pb−Ag (0.6 wt%) anode and cast Pb anode was investigated in diaphragm electrolysis by galvanostatic polarization, cyclic voltammetry, and anodic polarization and with Tafel curves. In addition, analyses of the anodic weight loss, metal ion concentration, phase analysis, and scanning electron microscopy images of the oxide layer and substrate were also conducted. The results show that the diaphragm electrolysis cell completely prevented the metal ions in the anode chamber from penetrating into the cathode chamber. The Co2+ in the solution was gradually oxidized to Co3+ during the oxygen evolution reaction (OER), which facilitated the reduction of the potential of the OER, decreased the time for the potential of the Pb−Ag (0.6 wt%) anode and Pb anode to stabilize, and improved the corrosion resistance of the Pb−Ag (0.6 wt%) anode and Pb anode by weakening the oxidation of the anodic metal substrate during the OER.

中文翻译：

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隔膜电解中Co2+对锌电积Pb Ag和Pb阳极电化学和腐蚀行为的影响

摘要 在本研究中，通过恒电流极化、循环伏安法和阳极极化，研究了 Co2+ (2 g/L) 对浇铸 Pb−Ag (0.6 wt%) 阳极和浇铸 Pb 阳极电化学行为的影响。用 Tafel 曲线。此外，还对氧化层和基材的阳极失重、金属离子浓度、相分析和扫描电子显微镜图像进行了分析。结果表明，隔膜电解槽完全阻止了阳极室中的金属离子渗入阴极室。在析氧反应（OER）过程中，溶液中的 Co2+ 逐渐被氧化为 Co3+，这促进了 OER 电位的降低，减少了 Pb-Ag 电位的时间（0.