Journal of Analytical Methods in Chemistry (Jan 2016)

Mass Spectrometry of Polymer Electrolyte Membrane Fuel Cells

  • Viktor Johánek,
  • Anna Ostroverkh,
  • Roman Fiala,
  • Andrii Rednyk,
  • Vladimír Matolín

DOI
https://doi.org/10.1155/2016/6097285
Journal volume & issue
Vol. 2016

Abstract

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The chemical analysis of processes inside fuel cells under operating conditions in either direct or inverted (electrolysis) mode and their correlation with potentiostatic measurements is a crucial part of understanding fuel cell electrochemistry. We present a relatively simple yet powerful experimental setup for online monitoring of the fuel cell exhaust (of either cathode or anode side) downstream by mass spectrometry. The influence of a variety of parameters (composition of the catalyst, fuel type or its concentration, cell temperature, level of humidification, mass flow rate, power load, cell potential, etc.) on the fuel cell operation can be easily investigated separately or in a combined fashion. We demonstrate the application of this technique on a few examples of low-temperature (70°C herein) polymer electrolyte membrane fuel cells (both alcohol- and hydrogen-fed) subjected to a wide range of conditions.