What is it about?
AB is a solid H2 storage material. Although AB can be mixed with other non-reactive compounds and delivered in solid form (Cella Energy), another option would be to mix it with liquid species that also store H2 like amine-boranes. We demonstrate that slurries of AB and amine-boranes can be generated. These slurries can also release their stored H2 and form liquid products, in contrast with spent AB (albeit with reduced usable H2)
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Why is it important?
Currently the US transportation sector is beholden to combustion engines that are at best 20-25% efficient. By developing H2 storage technologies we have the opportunity to make the more efficient fuel cell vehicle attractive by enabling longer distances and usable interior space. Compressed H2 are being deployed in California and a few other states, but currently the filling stations are expensive and the whole paradigm highly subsidized.
Perspectives
The idea of blending AB is not new - it was proposed by my colleagues at Los Alamos in the later years of the Center of Excellence in Chemical Hydrogen Storage (see Annual Merit Reviews from 2009, 2010). That said, we wished to quantitatively explore the idea and place bounds on the phase space with inexpensive amine-boranes.
Benjamin L Davis
Los Alamos National Laboratory
Read the Original
This page is a summary of: Enabling ammonia-borane: co-oligomerizaiton of ammonia-borane and amine-boranes yield liquid products, Energy & Environmental Science, January 2014, Royal Society of Chemistry,
DOI: 10.1039/c4ee00442f.
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