Gregory, D. , Bravo Diaz, L. , Hanlon, J., Bielewski, M. and Milewska, A. (2018) Ammonia borane-based nanocomposites as solid state hydrogen stores for portable power applications. Energy Technology, 6(3), pp. 583-594. (doi: 10.1002/ente.201700651)
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Abstract
Ammonia borane (AB) based nanocomposites have been investigated with the aim of developing a promising solid-state hydrogen store that complies with the requirements of a modular polymer electrolyte membrane fuel cell (PEM FC) in a portable power pack system. AB-carbon nanocomposites (prepared via ball milling or solution-impregnation) demonstrate improved hydrogen release performance compared to AB itself in terms of onset temperature and hydrogen purity, while maintaining a gravimetric density of more than 5 wt. % H2. The most promising of these materials is an AB-AC (activated carbon) composite, synthesised via solution-impregnation with an optimal dehydrogenation temperature of 96 °C. When combined with an external nickel chloride filter downstream, no evolved gaseous by-products can be detected above 100 ppb. The feasibility of an AB-AC storage tank has been further endorsed by simulations in which the reaction rate and the hydrogen flux was found to be almost constant as the temperature front propagated from the bottom to the top of the tank after initiation.
| Item Type: | Articles |
|---|---|
| Additional Information: | Associated research received funding from the European Union's Seventh Framework 610 Programme (FP7/2007-2013) for the Fuel Cells and Hydrogen Joint Technology Initiative under Grant 611 Agreement number 303447. |
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Bravo Diaz, Laura and Hanlon, Dr James and Gregory, Professor Duncan |
| Authors: | Gregory, D., Bravo Diaz, L., Hanlon, J., Bielewski, M., and Milewska, A. |
| College/School: | College of Science and Engineering > School of Chemistry |
| Journal Name: | Energy Technology |
| Publisher: | Wiley |
| ISSN: | 2194-4288 |
| ISSN (Online): | 2194-4288 |
| Published Online: | 28 September 2017 |
| Copyright Holders: | Copyright © 2017 Wiley-VCH Verlag GmbH & Co. |
| First Published: | First published in Energy Technology 6(3):583-594 |
| Publisher Policy: | Reproduced in accordance with the publisher copyright policy |
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