Portable ammonia-borane-based H2 power-pack for unmanned aerial vehicles

Jung Eun Seo, Yujong Kim, Yongmin Kim, Kibeom Kim, Jin Hee Lee, Dae Hyung Lee, Yeongcheon Kim, Seock Jae Shin, Dong Min Kim, Sung Yug Kim, Taegyu Kim, Chang Won Yoon, Suk Woo Nam

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

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. 2013 Published by Elsevier B.V. All rights reserved.

Original languageEnglish
Pages (from-to)329-337
Number of pages9
JournalJournal of Power Sources
Volume254
DOIs
Publication statusPublished - 2014 May 15

Keywords

  • Ammonia borane
  • Hydrogen power-pack
  • Polymer electrolyte membrane fuel cell (PEMFC)
  • Unmanned aerial vehicle (UAV)

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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