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

    Authors

    M. D. Hampton; J. K. Lomness;L. A. Giannuzzi

    Comments

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    Abbreviated Journal Title

    Int. J. Hydrog. Energy

    Keywords

    activation; FIB; magnesium-nickel alloy; water activation; surface; analysis; surface hydroxide; TEM; TEM SPECIMEN PREPARATION; HYDROGEN UPTAKE; LIFT-OUT; ACTIVATION; MG2NI; Chemistry, Physical; Electrochemistry; Energy & Fuels

    Abstract

    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.

    Journal Title

    International Journal of Hydrogen Energy

    Volume

    27

    Issue/Number

    1

    Publication Date

    1-1-2002

    Document Type

    Article

    Language

    English

    First Page

    79

    Last Page

    83

    WOS Identifier

    WOS:000172739900011

    ISSN

    0360-3199

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