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Portable ammonia-borane-based H-2 power-pack for unmanned aerial vehicles

Authors
Seo, Jung-EunKim, YujongKim, YongminKim, KibeomLee, Jin HeeLee, Dae HyungKim, YeongcheonShin, Seock JaeKim, Dong-MinKim, Sung-YugKim, TaegyuYoon, Chang WonNam, Suk Woo
Issue Date
15-5월-2014
Publisher
ELSEVIER
Keywords
Ammonia borane; Hydrogen power-pack; Polymer electrolyte membrane fuel cell; (PEMFC); Unmanned aerial vehicle (UAV)
Citation
JOURNAL OF POWER SOURCES, v.254, pp.329 - 337
Indexed
SCIE
SCOPUS
Journal Title
JOURNAL OF POWER SOURCES
Volume
254
Start Page
329
End Page
337
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/98515
DOI
10.1016/j.jpowsour.2013.11.112
ISSN
0378-7753
Abstract
An advanced ammonia borane (AB)-based H-2 power-pack is designed to continually drive an unmanned aerial vehicle (UAV) for 57 min using a 200-We polymer electrolyte membrane fuel cell (PEMFC). In a flight test with the UAV platform integrated with the developed power-pack, pure hydrogen with an average flow rate of 3.8 L(H-2) min(-1) is generated by autothermal H-2-release from AB with tetraethylene glycol dimethylether (T4EGDE) as a promoter. During take-off, a hybridized power management system (PMS) consisting of the fuel cell and an auxiliary lithium-ion battery supplies 500 We at full power simultaneously, while the fuel cell alone provides 150-200 W-e and further recharges the auxiliary battery upon cruising. Gaseous byproducts identified by in situ Fourier transform infrared (FT-IR) spectroscopy during AB dehydrogenation are sequestrated using a mixed absorbent in an H-2 purification system. In addition, a real-time monitoring system is employed to determine the remaining filter capacity of the purifier at a ground control system for rapidly responding unpredictable circumstances during flight. Separate experiments are conducted to screen potential materials and methods for enhancing filter capacity in the current H-2 refining system. A prospective reactor concept for long-term fuel cell applications is proposed based on the results. Crown Copyright (c) 2013 Published by Elsevier B.V. All rights reserved.
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