Influence of some physico-chemical factors on properties of electrodes that decompose water catalytically

被引：0

作者：

Primachenko, V. E. ^{[1
]}

Serba, O. A. ^{[1
]}

Chernobai, V. A. ^{[1
]}

Venger, E. F. ^{[1
]}

机构：

[1] NAS Ukraine, V Lashkaryov Inst Semicond Phys, 41 Prosect Nauky, UA-03028 Kiev, Ukraine

来源：

SEMICONDUCTOR PHYSICS QUANTUM ELECTRONICS & OPTOELECTRONICS | 2007年 / 10卷 / 02期

关键词：

catalytically active electrodes; oxidation; water decomposition;

D O I：

暂无

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have investigated the current creation accompanied by the water decomposition H2O -> OH + H caused by various catalytically active electrodes with different electrochemical potentials, both without external electric voltage on these electrodes and with the applied voltage V-0 = +/- 9.7 V. It is found that the current value and its time dependence are essentially influenced by such factors as thermal and natural (in ambient atmosphere) oxidation of electrodes (made of Al, Si, Yb, Ni, Ti, Cr3Si, and Ni3Si), changing their relief (texturing, polishing), and the electrolytic deposition of palladium as an impurity on the surface (Ti, Cr3Si). Changes in the current caused by the above factors are realized as a consequence of changes in both the electron work function inherent to these electrodes and their catalytical activity concerning the water decomposition both in the absence and the presence of the external voltage V-0.

引用

页码：40 / 45

页数：6