【摘要】 采用实时阻抗跟踪法、交流伏安法和电化学交流阻抗频谱法研究了稀土元素Pr和Nd添加对Pb在4.5mol.dm-3H2SO4中0.9 V(vs.Hg/Hg2SO4)下生长的阳极Pb(Ⅱ)膜阻抗特性的影响.结果表明,Pr和Nd均显著降低Pb(Ⅱ)阳极膜的阻抗,膜阻抗的降低很可能由于Pr3+和Nd3+的掺杂提高了Pb(Ⅱ)阳极膜电子电导率.更多还原

【Abstract】 Real time impedance tracing,ac voltammetry and electrochemical impedance spectroscopy have been applied to the study of the effect of Pr and Nd alloying agents on impedance properties of anodic Pb(Ⅱ) films formed on Pb-Pr and Pb-Nd alloys at 0.9 V(vs.Hg/Hg2SO4) in 4.5 mol·dm-3 H2SO4.The results show that the two additives significantly decrease the impedance of anodic Pb(Ⅱ) film,which is likely attributed to enhanced electronic conductivity of anodic Pb(Ⅱ) films on Pb-Pr and Pb-Nd alloys.更多还原