The use of on-line hydrogen sensor for studying inert gas effects and nitrogen crossover in PEMFC system

Henri Karimäki (Corresponding Author), Luis Carlos Pérez, Kaj Nikiforow, Timo Keränen, Jaana Viitakangas, Jari Ihonen

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    The design and construction of a polymer electrolyte membrane fuel cell (PEMFC) system test bench suitable for investigating the effects of inert gas build-up and hydrogen quality on the performance of PEMFC systems is reported. Moreover, a new methodology to measure the inert gas crossover rate using an on-line hydrogen concentration sensor is introduced, and preliminary results are presented for an aged 8 kW PEMFC stack. The system test bench was also characterized using the same stack, whereupon its performance was observed to be close to commercial systems. The effect of inert gas accumulation and hence the quality of hydrogen on the performance of the system was studied by diluting hydrogen gas in the anode supply pipeline with nitrogen. During these experiments, uneven performance between cells was observed for the aged stack.
    Original languageEnglish
    Pages (from-to)10179-10187
    Number of pages9
    JournalInternational Journal of Hydrogen Energy
    Issue number16
    Publication statusPublished - 2011
    MoE publication typeA1 Journal article-refereed



    • Anode purge
    • hydrogen concentration sensor
    • hydrogen quality
    • inert build-up
    • nitrogen crossover
    • PEMFC system

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