Naslov
Inductance at Low Frequencies in Electrochemical Impedance Spectroscopy of PEM Fuel Cells

Autori
Pivac, Ivan ; Šimić, Boris ; Bezmalinović, Dario ; Barbir, Frano

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
5th European PEFC & H2 Forum 2015 / Barbir, Frano ; Esposito, Angelo ; Hissel, Daniel ; Radica, Gojmir ; Scholta, Joachim ; Tolj, Ivan - Lausanne : European Fuel Cell Forum AG, 2015, 54-59

ISBN
978-3-905592-19-1

Skup
5th European PEFC & H2 Forum 2015

Mjesto i datum
Luzern, Švicarska, 30.06.2015. - 03.07.2015

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Electrochemical Impedance Spectroscopy ; PEM Fuel Cells ; degradation diagnostics

Sažetak
The results of electrochemical impedance spectroscopy of PEM fuel cells may exhibit inductance at low frequencies. A standard representation of fuel cell processes by equivalent circuit models involving resistance/capacitance loops representing activation losses on both anode and cathode in series with a resistance, cannot explain inductance at low frequencies. A novel equivalent circuit model is made by adding additional resonance loops comprising of a resistance, capacitance and inductance, for both anode and cathode, representing mass transport and resistive losses within the catalyst layer. The model was used to fit the results of an accelerated stress test. The results indicate that resistance, capacitance and inductance representing the cathode catalyst layer change dramatically during the accelerated stress test, and this shows good agreement with the findings of the periodic diagnostic tests.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo, Strojarstvo

Napomena
Rad A0810 Chapter 05

POVEZANOST RADA