Monday, November 15, 2010

New low temp hydrogen solid storage

The hydrogen catch-and-release, a.k.a. dehydrogenation and hydrogenation, in this LiBH4 and MgH2 fuel cell system operates coolly and reversibly.

Scientists at Pacific Northwest National Laboratory and the University of Connecticut have developed a new solid hydrogen storage material using lithium borohydride (LiBH4) with a dash of additive magnesium hydride (MgH2).

The specific new invention is a new type of ball-milling technique, which the researchers describe as something similar to "rock tumbling" - where rough stones are rotated inside a barrel with a selection of harder grit stone, until the rough edges have all been removed.
By putting the materials through this milling technique, they can subsequently be charged with hydrogen and discharge hydrogen at higher speed and without high temperatures.
The materials were analysed at molecular level using a nuclear magnetic resonance spectrometer (NMR) and other similar resources.
The research has pointed to new avenues of study using different additives and mechanical manipulation techniques, the researchers say. Read more here.

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