Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 1, Issue 46, Pages 14700-14705Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3ta13318d
Keywords
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Funding
- Major International (Regional) Joint Research Project [51210002]
- National Natural Science Foundation of China [U1034003, 21073241]
- National Natural Science Foundation of Guangdong Province [U1034003]
- Institute of Advanced Technology of the Sun Yat-sen University [90035-3283308]
- Specialized Research Fund for the Doctoral Program of Higher Education of China [20110171110024]
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A facile method has been used to synthesize boron and nitrogen-dual-self-doped graphene sheets (BNGs). The procedures include a borane-tert-butylamine complex as the precursor to impregnate with a certain amount of cobalt ions, then thermolysis in a tube furnace. The synthesized boron and nitrogen-dual-self-doped graphene sheets are systematically characterized by XRD, Raman spectra, XPS, SEM, EDS, TEM and EELS. Analysis results show that nitrogen and boron atoms are successfully self-doped into the graphene sheets. The BNG-1000 indicates the nitrogen and boron doping levels of 7.72 at.% and 7.18 at.%, respectively. The BNGs show a remarkable activity and high stability for the oxygen reduction reaction (ORR). An onset potential of 0.95 V which is close to that of Pt/C and a well-defined limiting current plateau for the ORR is observed in alkaline media. It has been evidenced that the catalyst is very stable and without degradation after 5000 cycles.
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