TY  - JOUR
AU  - Kulikovsky, Andrei
TI  - A model for concentration impedance of a PEM fuel cell
JO  - eTransportation
VL  - 2
SN  - 2590-1168
CY  - Amsterdam [u.a.]
PB  - Elsevier
M1  - FZJ-2020-01067
SP  - 100026 -
PY  - 2019
AB  - We report an analytical physics–based model for oxygen concentration perturbation spectra of a PEM fuel cell cathode side. An expression for the concentration impedance (CI) taking into account oxygen transport in the cathode catalyst layer (CCL) and the gas diffusion layer (GDL) is derived. In the static limit the CI gives the limiting current density due to oxygen transport in the GDL. The Bode plots of real and imaginary part of the CI have minima at the characteristic frequencies corresponding to oxygen transport in the GDL and the CCL, respectively. These features enable direct estimation of the respective oxygen diffusion coefficients without curve fitting.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000658423200005
DO  - DOI:10.1016/j.etran.2019.100026
UR  - https://juser.fz-juelich.de/record/873875
ER  -