HYDROGEN OVERPOTENTIAL FOR INTERMETALLIC COMPOUNDS, TIAL, FEAL AND NIAL, CONTAINING 3D TRANSITION-METALS

被引：34

作者：

EZAKI, H ^{[1
]}

MORINAGA, M ^{[1
]}

WATANABE, S ^{[1
]}

SAITO, J ^{[1
]}

机构：

[1] TOYOHASHI UNIV TECHNOL,DEPT PROD SYST ENGN,TOYOHASHI,AICHI 441,JAPAN

来源：

ELECTROCHIMICA ACTA | 1994年 / 39卷 / 11-12期

关键词：

HYDROGEN OVERPOTENTIAL; HYDROGEN EVOLUTION REACTION; INTERMETALLIC COMPOUNDS; ALLOYING EFFECT; ELECTRONIC STRUCTURE;

D O I：

10.1016/0013-4686(94)85163-8

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A theory proposed for understanding the alloying effect on the hydrogen; overpotential of alloys has been further confirmed in the present study of intermetallic compounds, TiAl, FeAl and NiAl containing various 3d transition elements. The trend of hydrogen overpotential changes with alloying elements in these compounds resembled the observation in Ti-, Fe- and Ni-based binary alloys. The variation in hydrogen overpotential was explained in terms of the direction for the charge transfer between atoms as is shown in the transition metal based binary alloys. In other words, the most negatively charged atom in the compound, as the result of charge transfer between the constituent atoms, is responsible mainly for the hydrogen overpotential change with alloying. This concept was also applicable to the hydrogen overpotential problem for transition metal based ternary alloys.

引用

页码：1769 / 1773

页数：5

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