Naslov
Electrochemical Impedance Spectroscopy for PEM Fuel Cell Degradation Diagnostics

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

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

Izvornik
Proceedings of the 6th European Fuel Cell Piero Lunghi Conference / Cigolotti, Viviana - Rim : ENEA, 2015, 171-172

ISBN
978-88-8286-324-1

Skup
European Fuel Cell Piero Lunghi Conference (6 ; 2015)

Mjesto i datum
Napulj, Italija, 16.12.2015. - 18.12.2015

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
degradation ; electrochemical impedance spectroscopy ; equivalent circuit model ; impedance model ; inductance

Sažetak
An accelerated stress test for catalyst degradation, that involves voltage cycling, was conducted on a single PEM fuel cell. Diagnostic tests, such as polarization curves, electrochemical impedance spectroscopy, cyclic voltammetry, and linear sweep voltammetry were conducted periodically to monitor performance degradation. A novel equivalent circuit model is suggested by adding a couple additional resonance loops comprising of resistance, capacitance and inductance in parallel, one for the anode and one for the cathode. The model was then used to fit the results of the electrochemical impedance spectroscopy measurements taken during the accelerated stress test. The results confirmed the findings from diagnostic tests, namely that the cathode catalyst layer parameters, resistance and inductance increased significantly during the accelerated stress test.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo, Strojarstvo

POVEZANOST RADA