Journal
KOREAN JOURNAL OF CHEMICAL ENGINEERING
Volume 29, Issue 5, Pages 621-626Publisher
KOREAN INSTITUTE CHEMICAL ENGINEERS
DOI: 10.1007/s11814-011-0225-z
Keywords
Non-precious Metal Catalyst; Metal-porphyrin; ORR Activity; Rotating Disc Electrode; Polymer Electrolyte Membrane Fuel Cells
Funding
- Energy-Bank of Korea Institute of Science and Technology
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Active and stable cobalt-based non-precious metal catalysts for the oxygen reduction reaction (ORR) in PEM fuel cells were developed through high-temperature pyrolysis of metal-porphyrins supported on carbon. The roles of substituted porphyrins, carbon support, and catalyst loading on ORR activity were studied using rotating disc electrode (RDE) measurements. It was observed that the carbon support plays a major role in improving the catalytic activity. The results showed that among the supported catalysts, the homemade mesocarbon-supported cobalt-porphyrin catalyst with 20 wt% loading displayed higher ORR activity; the cell performance showed maximum current density of 1.1 A cm(-2) at 0.13 V in H-2/O-2 fuel cells.
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