Journal Article

FZJ-2021-00306

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Performance of a PEM fuel cell with oscillating air flow velocity: A modeling study based on cell impedance

Kulikovsky, A. (Corresponding author)FZJ*

2021
Elsevier Amsterdam [u.a.]

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Please use a persistent id in citations: http://hdl.handle.net/2128/27118  doi:10.1016/j.etran.2021.100104

Abstract: A model of PEM fuel cell impedance is developed taking into account imposed harmonic perturbation of the air flow velocity in the cathode channel. The flow velocity modulation with the amplitude proportional to AC amplitude of the cell potential lowers the resistivity Rh due to oxygen transport in channel. When relative amplitudes of velocity and potential oscillations are equal, a complete compensation of Rh occurs. This effect explains experimental findings of Kim et al. (https://doi.org/10.1016/j.jpowsour.2008.06.069) and Hwang et al. (https://doi.org/10.1016/j.ijhydene.2010.01.064), who demonstrated significant improvement of PEM fuel cell performance under oscillating air flow velocity.

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Contributing Institute(s):

1. IEK-13 (IEK-13)

Research Program(s):

1. 122 - Elektrochemische Energiespeicherung (POF4-122) (POF4-122)
2. 123 - Chemische Energieträger (POF4-123) (POF4-123)

Appears in the scientific report 2021

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Database coverage:
; ; Clarivate Analytics Master Journal List ; Current Contents - Engineering, Computing and Technology ; Essential Science Indicators ; IF >= 10 ; JCR ; Nationallizenz ; Nationallizenz ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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