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本文用非现场红外反射吸收光谱方法和电化学循环伏安法研究了1.0mol·dm~(-3)H_2SO_4中-0.6至2.5伏电势范围内(相对SCE)Pb阳极膜的形成及其可能的结构。在此电势区内Pb阳极膜中始终存在硫酸铅或碱式硫酸铅,其中SO_4~(2-)主要以桥式双齿配位方式与Pb~(2+)结合。另外,上述电势范围内生成的膜中无可检测量的H_2O和OH~-存在。
In this paper, the off-site infrared absorption spectroscopy and electrochemical cyclic voltammetry were used to study the formation and potential of Pb anode films in the potential range of -0.6 to 2.5 V (relative to SCE) in 1.0 mol · dm -3 H_2SO_4 structure. In this potential region, lead sulfate or basic lead sulfate is always present in the Pb anode film, and SO 4 2- is bound to Pb 2+ by bridging bidentate coordination. In addition, there was no detectable amount of H 2 O and OH ~ - in the film formed in the above potential range.