Surface and electrode properties of Zr(V0.25Ni0.75), alloy treated with ultrasound-solution

被引：12

作者：

Chen, J ^{[1
]}

Bradhurst, DH ^{[1
]}

Dou, SX ^{[1
]}

Liu, HK ^{[1
]}

机构：

[1] Univ Wollongong, Inst Mat Technol & Mfg, Wollongong, NSW 2522, Australia

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 1998年 / 265卷 / 1-2期

关键词：

Zr-based alloy; ultrasound-solution treatment; hydride electrode; surface state;

D O I：

10.1016/S0925-8388(97)00310-1

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

An ultrasound treatment in a 1 M KF+0.02 M KH2PO2 solution was carried out to modify the surface of Zr(V0.25Ni0.75)(2) alloy. The effects of this treatment on the surface and structure properties were investigated by scanning electron microscopy, X-ray diffraction and Auger electron spectroscopy. The untreated and treated alloys were used as the hydride electrodes of a nickel-metal hydride cell, which were studied to compare the activation, charge-discharge at different discharge current density, the exchange current density and the polarization resistance of the electrodes. The results reveal that the characteristics of the treated alloy electrode are significantly improved owing to a new nickel rich protuberance and a thin hydride surface layer. (C) 1998 Elsevier Science S.A.

引用

页码：281 / 285

页数：5

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