High and rapid hydrogen release from thermolysis of ammonia borane near PEM fuel cell operating temperatures

Hyun Tae Hwang, Ahmad Al-Kukhun, Arvind Varma

Research output: Contribution to journalArticlepeer-review

27 Scopus citations


Ammonia borane (NH3BH3, AB), containing 19.6 wt % hydrogen, is a promising hydrogen storage material for use in proton exchange membrane fuel cell (PEM FC) powered vehicles. Our experiments demonstrate the highest H2 yield (∼14 wt %, 2.15 H2 equivalent) values obtained by neat AB thermolysis near PEM FC operating temperatures, along with rapid kinetics, without the use of either catalyst or additives. It was also found that only trace amount of ammonia (<10 ppm) is produced during dehydrogenation reaction and spent AB products are polyborazylene-like species, which can be efficiently regenerated using currently demonstrated methods. The results indicate that our proposed method is the most promising one available in the literature to-date for hydrogen storage, and could be used in PEM FC based vehicle applications.

Original languageEnglish
Pages (from-to)2407-2411
Number of pages5
JournalInternational Journal of Hydrogen Energy
Issue number3
StatePublished - Feb 2012

Bibliographical note

Funding Information:
This work was supported by the Department of Energy , under Grant Number DOE-FG36-06GO086050 to the Purdue University Energy Center. We thank Danni Gao for her help with characterization of solid samples.


  • Ammonia borane
  • Dehydrogenation
  • Fuel cell
  • Hydrogen storage
  • Thermolysis

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology


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