Seo, Jung-Eun Kim, Yujong Kim, Yongmin Kim, Kibeom Lee, Jin Hee Lee, Dae Hyung Kim, Yeongcheon Shin, Seock Jae Kim, Dong-Min Kim, Sung-Yug Kim, Taegyu Yoon, Chang Won Nam, Suk Woo 2024-01-20T09:34:55Z 2024-01-20T09:34:55Z 2021-09-05 2014-05-15 0378-7753 https://pubs.kist.re.kr/handle/201004/126787 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. English ELSEVIER HYDROGEN RELEASE DEHYDROGENATION PERFORMANCE Portable ammonia-borane-based H-2 power-pack for unmanned aerial vehicles Article 10.1016/j.jpowsour.2013.11.112 1 JOURNAL OF POWER SOURCES, v.254, pp.329 - 337 JOURNAL OF POWER SOURCES 254 329 337 scie scopus 000332496300042 2-s2.0-84892693810 Chemistry, Physical Electrochemistry Energy & Fuels Materials Science, Multidisciplinary Chemistry Electrochemistry Energy & Fuels Materials Science Article HYDROGEN RELEASE DEHYDROGENATION PERFORMANCE Ammonia borane Hydrogen power-pack Polymer electrolyte membrane fuel cell (PEMFC) Unmanned aerial vehicle (UAV)