Title

Magnetized/charged MgH2-based hydrogen storage materials

College

College of Science

Department/Unit

Physics

Document Type

Article

Source Title

Applied Physics Letters

Volume

86

Issue

21

First Page

1

Last Page

3

Publication Date

5-23-2005

Abstract

We propose two methods to facilitate the Mg-H bond cleavage of magnesium hydride Mg H2. We found via density functional calculations that Mn (or Fe), when inserted between two Mg H2, exhibits a much higher catalytic activity than the other 3d transition metal elements because of the induced spin polarization of the Mg H2. We also found that an ionized Mg H2 (Mg H2+) has considerably softer Mg-H bonds. We can thus significantly reduce the H2 desorption temperatures from Mg H2 to practical levels, ~400 K, by forming an alloy hydride with Mn (or Fe), and/or ionizing the Mg H2. © 2005 American Institute of Physics.

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Digitial Object Identifier (DOI)

10.1063/1.1931045

Disciplines

Physics

Keywords

Magnesium; Hydrides

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