【摘要】 测定了二氧化铅电极上氧发生反应的交流阻抗。用曲线拟合法解析组抗谱,求得了反应电阻R_t、吸附电阻R_a、双层电容C_d、吸附电容C_a的值。认为（OH）吸+H₂O→（O）吸+H₃O⁺+e^-是氧发生反应的控制步骤。讨论了C_d、C_a与OH^-离子浓度变化的关系。更多还原

【Abstract】 The anodic reaction of oxygen evolution on PbO₂ electrode was studiedby A. C. impedance measurement. The Faradaic. resistance R_t,double layercapacitance C_d adsorption resistance R_a and adsorption capacitance C_a weredetermined by analyzing the impedance spectra with microcomputer curve-fitting method. The rate-controlling step of the reaction was considered tobe （OH）_ad+H₂O→（O）_ad+H₃O+e^-. The relation between C_d, C_a.and OH^-ion concentration was discussed in view of the adsorption effect.更多还原