Comparison Between the Constant Dummy Load and Step Load Shut‐Down Strategy for PEMFCs1. Issue 3 (30th March 2018)

• Record Type: Journal Article
• Authors: Lin, R.; Xia, S.; Zhang, Q.; Dutruel, B.
• Other Names: Friedrich A. guestEditor.; Yousfi Steiner N. guestEditor.; Bultel Y. guestEditor.; Hissel D. guestEditor.; Turpin C. guestEditor.
• Is Part Of: Fuel cells. Volume 18:Issue 3(2018)
• Page Start: 306
• Page End: 314
• Publication Date: 2018-03-30
• Subjects: Constant Dummy Load Strategy -- Proton Exchange Membrane Fuel Cell (PEMFC) -- Reversal Current Mechanism -- Start‐up and Shut‐down Condition -- Step Load Strategy; Fuel cells -- Periodicals; 621.312429
• DOI: 10.1002/fuce.201700095
• Languages: English
• ISSNs: 1615-6846

Abstract

Abstract: Carbon corrosion of catalyst layer (CL) caused by start‐up/shut‐down (SU/SD) conditions in proton exchange membrane fuel cells (PEMFCs) decreases the durability of the membrane electrode assembly (MEA). It is reported that the dummy load shut‐down strategy helps alleviating the carbon corrosion. In this paper, constant load strategy and step load strategy are applied during 900 SU/SD cycles each, to investigate the effects of different dummy load forms on the durability of PEMFC. Reversal current is observed during the last phase of 5 A constant loading process, while there is no reversal current during the step load strategy. The results obtained through polarization curves, cyclic voltammetry (CV) and scanning electron microscope (SEM) technologies, prove the step load strategy more efficient to alleviate the performance decay. Therefore, the step load strategy can improve the durability of PEMFC.