期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 2, 期 24, 页码 9079-9084出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4ta01043d
关键词
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资金
- National 973 Basic Research Program [2012CB933800]
- National Natural Science Foundation of China [21035002, 21205059]
- Natural Science Foundation of Jiangsu Province [BK2010382]
We developed a facile method to synthesize nanocomposites of cobalt loaded nitrogen doped graphene (Co-N-rGO), acting as a highly active non-precious metal catalyst for the oxygen reduction reaction (ORR). In alkaline media, the Co-N-rGO catalyst displayed a low overpotential, larger current density, better durability, and methanol tolerance ability toward ORR. Kinetic parameter analysis showed a high selectivity to an apparent four-electron transfer process on the Co-N-rGO catalyst for ORR with an average electron transfer number of 3.97. The excellent activity of the Co-N-rGO catalyst (0.44% Co) may result from its well-constructed porosity with high specific surface area and a synergistic effect between the N-rGO and cobalt oxide species.
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