Development of a continuous hydrogen generator fueled by ammonia borane for portable fuel cell applications

  • Kim Y
  • Kim Y
  • Yeo S
 et al. 
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Abstract

Thermally-induced dehydrogenation from a mixture of ammonia borane (AB) and a chemical promoter, tetraethyleneglycol dimethylether (T4EGDE) (AB:T4EGDE = 79:21, wt%) has been demonstrated as an efficient method for hydrogen production at 85-145 °C. We further build on these prior results to create a continuous H2generator fueled by solid AB beads. The as-developed H2generator releases ca. 2 equiv of hydrogen autothermally during operation by utilizing excess heat produced from AB dehydrogenation without any external heater. A purifying system equipped with acidic filter materials is further utilized to remove gaseous byproducts other than hydrogen. The H2generator shows a rapid H2-release rate up to 3.3 l(H2) min-1with fast load-following capability. The as-developed H2generator is ultimately integrated with a commercial 200 Wepolymer electrolyte membrane fuel cell (PEMFC) to test its capability. © 2012 Elsevier B.V. All rights reserved.

Author-supplied keywords

  • Ammonia borane
  • Continuous hydrogen generation
  • Polymer electrolyte membrane fuel cell
  • Solvent-mediated thermolysis

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Authors

  • Yongmin Kim

  • Yujong Kim

  • Shinyoung Yeo

  • Kibeom Kim

  • Katherine Jung-Eun Koh

  • Jung Eun Seo

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