This paper presented non-kinetic losses in PEM fuel cells under an accelerated stress test of catalyst support. The cathode with carbon-supported Pt catalyst was prepared and characterized with potential hold at 1.2 V vs. SHE in PEM fuel cells. Irreversible losses caused by carbon corrosion were evaluated using a variety of electrochemical characterizations including cyclic voltammetry, linear sweep voltammetry, electrochemical impedance spectroscopy, and polarization technique. Ohmic losses at the cathode with potential hold were determined using its capacitive responses. Concentration losses in PEM fuel cells were analyzed in terms of Tafel behavior and thin film/flooded-agglomerate dynamics.
Revised: July 30, 2012 |
Published: May 1, 2012
Citation
Park S., Y. Shao, V.V. Viswanathan, J. Liu, and Y. Wang. 2012.Non-Kinetic Losses Caused by Electrochemical Carbon Corrosion in PEM Fuel Cells.International Journal of Hydrogen Energy 37, no. 10:8451-8458.PNNL-SA-85028.doi:10.1016/j.ijhydene.2012.02.097