TY  - JOUR
AU  - Reshetenko, Tatyana
AU  - Serov, Alexey
AU  - Odgaard, Madeleine
AU  - Randolf, Günter
AU  - Osmieri, Luigi
AU  - Kulikovsky, Andrei
TI  - Electron and proton conductivity of Fe-N-C cathodes for PEM fuel cells: A model-based electrochemical impedance spectroscopy measurement
JO  - Electrochemistry communications
VL  - 118
SN  - 1388-2481
CY  - Amsterdam [u.a.]
PB  - Elsevier Science
M1  - FZJ-2020-02699
SP  - 106795 -
PY  - 2020
AB  - Impedance spectra of a PEM fuel cell with three Fe-N-C cathodes have been measured under the H2/N2 testing regime. The spectra have been fitted using a recently developed physics-based impedance model, which takes into account finite proton (σp) and electron (σe) conductivity of the oxygen-free cathode catalyst layer. Fitting allowed to extract numerical data for σp, σe, the double layer capacitance, and the inductance of cables used for measuring impedance spectra. The values of σp and σe are close to what previously found for standard Pt/C electrodes, which is found for the first time using PGM-free catalysts. The method enables simultaneous measurement of reference proton and electron conductivity of PEMFC cathode.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000567863500001
DO  - DOI:10.1016/j.elecom.2020.106795
UR  - https://juser.fz-juelich.de/record/878230
ER  -