Development of a solvent-free hydrogen storage and release system based on semi-solid-state ammonia borane (AB) fuel: high gravimetric capacity and feasibility for practical application

Title
Development of a solvent-free hydrogen storage and release system based on semi-solid-state ammonia borane (AB) fuel: high gravimetric capacity and feasibility for practical application
Authors
김성관홍성안손호진한원식윤창원남석우강상욱
Keywords
ammonia borane; dehydrogenation; hydrogen storage; catalyst
Issue Date
2014-12
Publisher
Journal of materials chemistry. A, Materials for energy and sustainability
Citation
VOL 2, 20243-20251
Abstract
Ammonia borane (AB), with high hydrogen contents and favorable dehydrogenation properties, is receiving intensive attention for its potential as a hydrogen storage material. In this study, we demonstrate a new type of solvent-free AB fuel system to obtain a high hydrogen systemic gravimetric capacity needed for practical fuel cell application. The new storage material constitutes AB soaked in tetraethylene glycol dimethyl ether (TEGDE) with catalytic amounts of palladium nanoparticles. Notably, TEGDE is very essential for the successful preparation of AB fuel system in a semi-solid state. The use of a minimum amount of TEGDE in this system allows the hybrid AB catalytic system to be fabricated as an efficient solvent and catalytic reaction medium, enabling a high gravimetric and volumetric capacity. For practical applications, AB pellets with spherical shapes have been manufactured by the co-precipitation of AB/TEGDE/PdNPs, followed by the compression of semi-solid AB fuel mixture for fuel transfer from the fuel tank to the hydrogen generator. Consequently, this hybrid semi-solid state catalytic system exhibits a high gravimetric capacity of hydrogen [10.01 material weight%]. With a high hydrogen capacity, a high performance dehydrogenation is obtained because of the synergistic effects facilitated by the highly active PdNPs well-dispersed in a TEGDE medium.
URI
http://pubs.kist.re.kr/handle/201004/49915
ISSN
20507488
Appears in Collections:
KIST Publication > Article
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE