Naslov
Analysis of Fuel Cell Stacks Degradation by Polarization Change Curves

Autori
Bezmalinović, Dario ; Magazinović, Gojko ; Barbir, Frano

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

Izvornik
Proceedings, 2014 IEEE Vehicle Power and Propulsion Conference VPPC2014 / Paulo J. G. Pereirinha - : Institute of Electrical and Electronics Engineers (IEEE), 2014, 139-141

ISBN
978-1-4799-6784-1

Skup
2014 IEEE Vehicle Power and Propulsion Conference VPPC2014

Mjesto i datum
Coimbra, Portugal, 27.10.2014. - 30.10.2014

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
PEM fuel cell; degradation; polarization curve; activation losses; resistance losses

Sažetak
Polarization change curves defined as a difference between polarization curve at the beginning of life and at the end of life (or at the end of experiment) were used to analyze degradation of a couple of fuel cell stacks. The first stack after 1600 hours of operation exhibited significant increase in activation losses and total resistance, as well as increase in hydrogen crossover. The improved stack during 5000 hours of operation exhibited almost no increase in activation losses and no increase in hydrogen crossover. The cell resistance increased but at a half the rate of the first stack. By the analysis of the polarization change curves it was possible to identify and even quantify the changes in different types of polarization over time.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo, Strojarstvo, Tehnologija prometa i transport

POVEZANOST RADA