Transient phenomenon of step switching for current or voltage in PEMFC

Chun-Ying Hsu, Fang-Bor Weng, Ay Su, Chao-Yang Wang, Irfan Saif Hussaini and Teng-Lang Feng

Renewable Energy, 2009, vol. 34, issue 8, 1979-1985

Abstract: The transient phenomenon of fuel cell with 5cm2 active area is investigated in this study by current density step increase and switching voltage under different conditions. It is found that there is an undershoot when the current density step increase is at the loading of 60% RH anode cathode, 3 stoic., 70°C, 15psi for automobile applications. The voltage is almost zero under 0.2 step increase to 1.0A/cm2 due to the H+ transport in membrane or H2/O2 in catalyst layer is almost used up. The undershoot phenomenon is more serious under gases stoichiometries of 3.0/3.0 when H2 is fully humidified due to low gas concentration or flooding on the electrode. This phenomenon would induce the degradation of fuel cell components.

Keywords: Transient; Undershoot; Load cycle; Fuel cell (search for similar items in EconPapers)
Date: 2009
References: View complete reference list from CitEc
Citations: View citations in EconPapers (4)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S096014810800462X
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:34:y:2009:i:8:p:1979-1985

DOI: 10.1016/j.renene.2008.12.024

Access Statistics for this article

Renewable Energy is currently edited by Soteris A. Kalogirou and Paul Christodoulides

More articles in Renewable Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().