Robust and efficient catalysts for the oxygen reduction reaction (ORR) are required for the development of various energy storage and conversion devices. In this study, a durable and high-performance Fe C@graphene ORR catalyst has been developed by the carbonization of urea- and agar-modified Fe O nanorods. The influence of the carbonization temperature and annealing time on the activity and stability of the resulting Fe/C catalyst was studied in detail. The Fe/C catalyst synthesized at a temperature of 700 °C (holding time: 60 min) showed better ORR activity and improved stability compared to a commercial Pt/C catalyst. The improved ORR catalytic activity of the catalyst is due to its high Fe C content and its good durability results from the unique microstructure of the Fe C@graphene hybrid.
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http://dx.doi.org/10.1002/cplu.201600215 | DOI Listing |
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