Journal
POLYMER ELECTROLYTE FUEL CELLS 11
Volume 41, Issue 1, Pages 2289-2296Publisher
ELECTROCHEMICAL SOC INC
DOI: 10.1149/1.3635762
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Funding
- Nissan Technical Center North America
- US Department of Energy [DE-PS36_08GO98009]
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An iron based metal-nitrogen-carbon (MNC) type oxygen reduction reaction catalyst was tested for in-situ polarization performance and durability. High open circuit voltage (OCV) of similar to 0.97 V and high activities were observed. Current density around 750 mA/cm(2) was obtained at 0.6 ViR-free/RHE and volumetric current density of 31 A/cm(3) was obtained at 0.8 ViR-free. A significant decrease in polarization after start-stop durability test was observed for this catalyst. An attempt was made to recover the in-situ performance after start-stop durability test by running the fuel cell at steady state current density. Partial performance recovery was achieved from the significantly degraded MNC based membrane electrode assembly (MEA). However, performance could not be recovered indefinitely due to eventual carbon loss.
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