Theoretical analysis of mass transfer during anodic dissolution of tungsten rotating disk electrode in alkaline solutions

被引：7

作者：

Volgin, Vladimir M. ^{[1
,2
]}

Kabanova, Tatyana B. ^{[2
]}

Davydov, Alexey D. ^{[2
]}

机构：

[1] Tula State Univ, Pr Lenina 92, Tula 300012, Russia

[2] Russian Acad Sci, Frumkin Inst Phys Chem & Electrochem, Leninskii Pr 31, Moscow 119071, Russia

来源：

ELECTROCHIMICA ACTA | 2020年 / 336卷

基金：

俄罗斯基础研究基金会;

关键词：

Tungsten; Anodic dissolution; Rotating disk electrode; Limiting current density; Nernst-Planck equation; Numerical simulation; LIMITING CURRENTS; BEHAVIOR; SIMULATION; TIPS;

D O I：

10.1016/j.electacta.2020.135705

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The mass transfer during the electrochemical dissolution of metals with the participation of electrolyte anions and the formation of stable anionic complex is analyzed by the example of tungsten anodic dissolution in the alkaline solutions. The distributions of ionic concentrations, partial current densities of ions and potential over the solution layer near the anode are determined as a result of numerical solution of the problem. The results of numerical solution are compared to the results of analytical solution and experimental data available from the literature. It is shown that the numerical solution of the problem with regard for migration, convection and concentration dependences of transport properties of solution agrees well with the experimental data. A complex role of ion migration in this process is revealed. (C) 2020 Elsevier Ltd. All rights reserved.

引用

页数：14

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