Portable ammonia-borane-based H2 power-pack for unmanned aerial vehicles
- Portable ammonia-borane-based H2 power-pack for unmanned aerial vehicles
- 서정은; 김유종; 김용민; 김기범; 이진희; 이대형; 김영천; 신석재; 김동민; 김승욱; 김태규; 윤창원; 남석우
- 화학적 수소저장; 암모니아 보란; 무인비행기; 연료전지; Ammonia borane; Hydrogen power-pack; Polymer electrolyte membrane fuel cell (PEMFC); Unmanned aerial vehicle (UAV)
- Issue Date
- Journal of power sources
- VOL 254, 329-337
- An advanced ammonia borane (AB)-based H2 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(H2) min−1 is generated by autothermal H2-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 We 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 H2 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 H2 refining system. A prospective reactor concept for long-term fuel cell applications is proposed based on the results.
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