KINETICS AND MECHANISM OF THE MAGNESIUM ELECTRODE-REACTION IN MOLTEN MAGNESIUM-CHLORIDE

被引：41

作者：

KISZA, A ^{[1
]}

KAZMIERCZAK, J ^{[1
]}

BORRESEN, B ^{[1
]}

HAARBERG, GM ^{[1
]}

TUNOLD, R ^{[1
]}

机构：

[1] UNIV TRONDHEIM,NTH,INST CHEM,N-7034 TRONDHEIM,NORWAY

来源：

JOURNAL OF APPLIED ELECTROCHEMISTRY | 1995年 / 25卷 / 10期

关键词：

D O I：

10.1007/BF00241588

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Using electrochemical impedance spectroscopy (EIS) and relaxation method with galvanostatic perturbation (RM) the kinetics and mechanism of the magnesium electrode reaction in pure molten MgCl2 have been determined at several temperatures. A three-step electrode process has been found, the high frequency process being pure charge transfer with the low frequency process showing mixed charge transfer-diffusion character. The low frequency step has also been treated as a preceding chemical reaction followed by charge transfer. On the basis of the corresponding exchange current densities and Warburg diffusion impedance, a mechanism of the overall electrode reaction in this melt is proposed.

引用

页码：940 / 946

页数：7

共 23 条

[1]

Bard A. J., 2001, ELECTROCHEMICAL METH, V2nd, P50

[2]

BORRESEN B, 1993, P INT S MOLTEN SALT, V939, P193

[3]

BOUCAMP B, 1988, EQUIVALENT CIRCUIT

[4] RAMAN-SPECTROSCOPIC STUDIES OF STRUCTURAL-PROPERTIES OF SOLID AND MOLTEN STATES OF THE MAGNESIUM-CHLORIDE ALKALI-METAL CHLORIDE SYSTEM [J].