Abstract
To develop continuous hydrogen generators utilizing ammonia borane (AB), one of the extensively studied chemical hydrogen storage material for applications in polymer electrolyte membrane fuel cells (PEMFCs), various types of oxygen-containing compounds such as 18-crown-6, 18-crown-6 derivatives, glycols, and polyethylene glycols were examined as chemical additives to enhance the H2-release properties of AB. The rate and extent of AB dehydrogenation with these promoters were found to increase considerably at temperatures ranging from 85 °C to 125 °C; in particular, a mixture of AB and either 18-crown-6 or tetraethylene glycol afforded a material-based hydrogen storage capacity of >9.5 wt%. In situ Fourier transform infrared (FT-IR) and solid-state nuclear magnetic resonance (NMR) spectroscopic studies were conducted to identify gaseous byproducts potentially detrimental to a PEMFC. Density functional theory (DFT) studies demonstrated that the additives could interact with AB via hydrogen bonding between oxygen atoms of a promoter and N-H of AB, which could ultimately facilitate AB dehydrogenation.
| Original language | English |
|---|---|
| Pages (from-to) | 21786-21795 |
| Number of pages | 10 |
| Journal | International Journal of Hydrogen Energy |
| Volume | 39 |
| Issue number | 36 |
| DOIs | |
| Publication status | Published - 2014 Dec 1 |
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Keywords
- Ammonia borane
- Chemical hydride
- Hydrogen storage
- Polyethers
- Polymer electrolyte membrane fuel cell (PEMFC)
- Promoter
ASJC Scopus subject areas
- Renewable Energy, Sustainability and the Environment
- Fuel Technology
- Condensed Matter Physics
- Energy Engineering and Power Technology
Cite this
Promotional effects of oxygen-containing additives on ammonia borane dehydrogenation for polymer electrolyte membrane fuel cell applications. / Yeo, Shinyoung; Kim, Yongmin; Lee, Jin Hee; Kim, Kibeom; Jang, Jong Hyun; Hong, Seong Ahn; Nam, SukWoo; Yoon, Chang Won.
In: International Journal of Hydrogen Energy, Vol. 39, No. 36, 01.12.2014, p. 21786-21795.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Promotional effects of oxygen-containing additives on ammonia borane dehydrogenation for polymer electrolyte membrane fuel cell applications
AU - Yeo, Shinyoung
AU - Kim, Yongmin
AU - Lee, Jin Hee
AU - Kim, Kibeom
AU - Jang, Jong Hyun
AU - Hong, Seong Ahn
AU - Nam, SukWoo
AU - Yoon, Chang Won
PY - 2014/12/1
Y1 - 2014/12/1
N2 - To develop continuous hydrogen generators utilizing ammonia borane (AB), one of the extensively studied chemical hydrogen storage material for applications in polymer electrolyte membrane fuel cells (PEMFCs), various types of oxygen-containing compounds such as 18-crown-6, 18-crown-6 derivatives, glycols, and polyethylene glycols were examined as chemical additives to enhance the H2-release properties of AB. The rate and extent of AB dehydrogenation with these promoters were found to increase considerably at temperatures ranging from 85 °C to 125 °C; in particular, a mixture of AB and either 18-crown-6 or tetraethylene glycol afforded a material-based hydrogen storage capacity of >9.5 wt%. In situ Fourier transform infrared (FT-IR) and solid-state nuclear magnetic resonance (NMR) spectroscopic studies were conducted to identify gaseous byproducts potentially detrimental to a PEMFC. Density functional theory (DFT) studies demonstrated that the additives could interact with AB via hydrogen bonding between oxygen atoms of a promoter and N-H of AB, which could ultimately facilitate AB dehydrogenation.
AB - To develop continuous hydrogen generators utilizing ammonia borane (AB), one of the extensively studied chemical hydrogen storage material for applications in polymer electrolyte membrane fuel cells (PEMFCs), various types of oxygen-containing compounds such as 18-crown-6, 18-crown-6 derivatives, glycols, and polyethylene glycols were examined as chemical additives to enhance the H2-release properties of AB. The rate and extent of AB dehydrogenation with these promoters were found to increase considerably at temperatures ranging from 85 °C to 125 °C; in particular, a mixture of AB and either 18-crown-6 or tetraethylene glycol afforded a material-based hydrogen storage capacity of >9.5 wt%. In situ Fourier transform infrared (FT-IR) and solid-state nuclear magnetic resonance (NMR) spectroscopic studies were conducted to identify gaseous byproducts potentially detrimental to a PEMFC. Density functional theory (DFT) studies demonstrated that the additives could interact with AB via hydrogen bonding between oxygen atoms of a promoter and N-H of AB, which could ultimately facilitate AB dehydrogenation.
KW - Ammonia borane
KW - Chemical hydride
KW - Hydrogen storage
KW - Polyethers
KW - Polymer electrolyte membrane fuel cell (PEMFC)
KW - Promoter
UR - http://www.scopus.com/inward/record.url?scp=84955176703&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84955176703&partnerID=8YFLogxK
U2 - 10.1016/j.ijhydene.2014.03.146
DO - 10.1016/j.ijhydene.2014.03.146
M3 - Article
VL - 39
SP - 21786
EP - 21795
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
SN - 0360-3199
IS - 36
ER -