Oxidation kinetics of a lead electrode covered with an anodic Pb-(II) film in sulfuric acid solution

被引：6

作者：

Ma, M ^{[1
]}

Yang, CX ^{[1
]}

Cai, WB ^{[1
]}

Zhou, WF ^{[1
]}

Liu, HT ^{[1
]}

机构：

[1] Fudan Univ, Dept Chem, Shanghai 200433, Peoples R China

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2003年 / 150卷 / 07期

关键词：

D O I：

10.1149/1.1576768

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Anodic polarization of lead electrodes covered with a preformed anodic Pb(II) film in the PbO potential region in 4.5 mol dm(-3) H2SO4 solution was studied using linear sweep voltammetry and electrochemical impedance spectroscopy. The experimental results show that the polarization is mainly due to the slow charge transfer. The mechanism of the formation of the anodic PbO film is suggested as follows: (i) Pb + OH- --> Pb(OH)(ad) + e(-); (ii) Pb(OH) ad + OH- --> PbOOH- + H+ + e(-) (rds); (iii) PbOOH- --> PbO + OH-. (C) 2003 The Electrochemical Society.

引用

页码：B325 / B328

页数：4

共 27 条

[1]

AUSTIN LG, 1968, HDB FUEL CELL TECHNO, P159

[2] SOME PHOTOELECTROCHEMICAL OBSERVATIONS ON LEAD UNDER ANODIC-OXIDATION IN SULFURIC-ACID [J].