POTENTIODYNAMIC BEHAVIOR OF BETA-LEAD DIOXIDE IN NEUTRAL MEDIA AT POSITIVE POTENTIALS

被引：7
|
作者：
MUNICHANDRAIAH, N
机构：
[1] Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore
来源：
JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 1991年 / 309卷 / 1-2期
关键词：
D O I：
10.1016/0022-0728(91)87013-T
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The behaviour of the PbO2 electrode in NaNO3, Na2SO4, NaClO4 and NaCl in the pH range 3.0-10.5 has been studied by cyclic voltammetry. When the electrode is cycled between 0.30 and 1.90 V, a large cathodic current peak appears in the negative scan; in the subsequent cycle, two anodic peaks appear. The addition of H2O2 at low concentrations to the electrolyte also results in two anodic peaks at the same potentials. A number of possible explanations for the appearance of the cathodic peak, and a mechanism for the oxidation of PbO to PbO2 through Pb3O4 corresponding to the two anodic peaks, are proposed.
引用
收藏
页码：199 / 211
页数：13
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