Naslov
Initial conditioning of PEM fuel cell by temperature and potential cycling

Autori
Bezmalinović, Dario ; Radošević, Jagoda ; Barbir, Frano

Izvornik
Acta chimica Slovenica (1318-0207) 62 (2015); 83-87

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
PEM fuel cells; conditioning; break-in; potential cycling; temperature cycling

Sažetak
Polymer electrolyte membrane fuel cells need initial conditioning, activation or break-in the first time they are operated after being assembled to reach the best performance. The exact mechanism of this initial conditioning is not completely understood, but it is assumed that during the conditioning process the polymer membrane, as well as the polymer in the catalyst layer, get humidified, and the number of active catalyst sites increases. Activation procedure proposed here consists of temperature and potential cycling. Temperature cycling is a new approach for the conditioning and the idea is to rapidly cool the running cell at some point to allow the membrane to equilibrate with condensed water which should result in higher intake of water within the membrane. The results show that proposed procedure is better or at least comparable to some conventional procedures for the initial conditioning.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo, Strojarstvo

POVEZANOST RADA