Regeneration of ammonia borane spent fuel by direct reaction with hydrazine and liquid ammonia

Andrew D. Sutton, Anthony K. Burrell, David A. Dixon, Edward B. Garner, John C. Gordon, Tessui Nakagawa, Kevin C. Ott, J. Pierce Robinson, Monica Vasiliu

Research output: Contribution to journalArticlepeer-review

389 Scopus citations

Abstract

Ammonia borane (H3N-BH3, AB) is a lightweight material containing a high density of hydrogen (H2) that can be readily liberated for use in fuel cell-powered applications. However, in the absence of a straightforward, efficient method for regenerating AB from dehydrogenated polymeric spent fuel, its full potential as a viable H 2 storage material will not be realized. We demonstrate that the spent fuel type derived from the removal of greater than two equivalents of H2 per molecule of AB (i.e., polyborazylene, PB) can be converted back to AB nearly quantitatively by 24-hour treatment with hydrazine (N 2H4) in liquid ammonia (NH3) at 40°C in a sealed pressure vessel.

Original languageEnglish
Pages (from-to)1426-1429
Number of pages4
JournalScience
Volume331
Issue number6023
DOIs
StatePublished - Mar 18 2011
Externally publishedYes

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