Journal
ELECTROCHEMISTRY COMMUNICATIONS
Volume 11, Issue 1, Pages 206-208Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2008.11.004
Keywords
CoTETA/C catalyst; Oxygen reduction reaction; Co triethylenetetramine chelate; PEMFCs
Categories
Funding
- 863 Program [2007AA05Z145]
- NSFC [20776085]
- Science & Technology Commission of Shanghai [06SN07115, 07JC14024]
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In this communication, we report a novel CoTETA/C catalyst for the oxygen reduction reaction (ORR) which was prepared from a carbon-supported cobalt triethylenetetramine chelate, followed by heat treatment in an inert atmosphere. Electrochemical performances were measured using rotating disk electrode (RDE) technique and a PEM fuel cell test station. For a H-2-O-2 fuel cell system, the maximum output power density reached 162 MW cm(-2) at 25 degrees C with non-humidified reaction gases. We found a nanometallic face-centered cubic (fcc) alpha-Co phase embedded in the graphitic carbon after pyrolysis, based on X-ray absorption spectroscopy (XAS) and X-ray diffraction (XRD) measurements. These results indicated that CoTETA/C is a promising catalyst for the ORR. (C) 2008 Elsevier B.V. All rights reserved.
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