Comparison of PEM Fuel Cell vs. Lithium-Sulfur Battery Systems for Unmanned Aerial Vehicles

Koku H., Eroğlu I., Pala D. E., Erişen N.

5th International Hydrogen Technologies Congress , Niğde, Turkey, 26 May - 28 October 2021, pp.85-87

  • Publication Type: Conference Paper / Full Text
  • City: Niğde
  • Country: Turkey
  • Page Numbers: pp.85-87
  • Middle East Technical University Affiliated: Yes


Electrically powered unmanned aerial vehicles (UAVs) are gaining attention and attempts are underway to improve
their performance in terms of weight, vibration, noise, emission and reliability. Fuel cells or batteries are commonly
used systems in these UAVs. In this study, the energy storage comparison between the Proton Exchange Membrane
(PEM) fuel cell and the Lithium-Sulfur (Li-S) battery is performed for a 500W UAV to determine the appropriate
design. While a commercial product is used for the mass predictions of the PEMFC case, the developed systemlevel
performance model is used for the Li-S battery. It is observed that the PEM fuel cell case is favorable for all of
the flight times investigated here and there is a need for an analysis beyond the boundaries of the designated case
study to observe the conditions in which the use of Li-S battery is more advantageous.