Surface study of liquid water treated and water vapor treated Mg2.35Ni alloy

被引：13

作者：

Hampton, MD ^{[1
]}

Lomness, JK ^{[1
]}

Giannuzzi, LA ^{[1
]}

机构：

[1] Univ Cent Florida, Dept Chem, Orlando, FL 32816 USA

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2002年 / 27卷 / 01期

基金：

美国国家科学基金会;

关键词：

activation; FIB; magnesium-nickel alloy; water activation; surface analysis; surface hydroxide; TEM;

D O I：

10.1016/S0360-3199(01)00092-1

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：

Magnesium nickel alloy (Mg2.35Ni) has been considered an excellent hydrogen storage medium because it has a. high hydrogen capacity, forms a very stable hydride, is inexpensive, and it presents no environmental hazards. One of the major problems associated with the use of Mg2.35Ni alloy for hydrogen storage is its initial activation for hydrogen uptake. Earlier work in this laboratory showed that treatment of Mg2.35Ni with either liquid water,or water vapor, activates the alloy for hydrogen up-take. In the present study, the surface modification of Mg2.35Ni by liquid water and water vapor is characterized. x-ray photoelectron spectroscopy, and transmission electron microscopy suggest the presence of Mg(OH)(2) on the surface. It is believed that this is the first report showing the presence of hydroxides on the surface of an active hydrogen storage alloy. (C) 2001 Published by Elsevier Science Ltd on behalf of the International; Association for Hydrogen Energy.

引用

页码：79 / 83

页数：5

共 13 条

[1] Focused ion beam milling and micromanipulation lift-out for site specific cross-section TEM specimen preparation [J].