期刊
RSC ADVANCES
卷 3, 期 25, 页码 9978-9984出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3ra41079j
关键词
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资金
- China National 973 Program [2012CB215500, 2012CB720300]
- National Natural Science Foundation of China [21176327, 51071131, 20936008]
- Program for New Century Excellent Talents in University [NCET-10-0890]
Metal-free phosphorus-doped graphene nanosheets (P-TRG) with large surface area (496.67 m(2) g(-1)) and relatively high P-doping level (1.16 at.%) were successfully prepared by thermal annealing a homogenous mixture of graphene oxide and 1-butyl-3-methlyimidazolium hexafluorophosphate under argon atmosphere. It was found that the P atoms were substitutionally incorporated into the carbon framework and were partially oxidized, which created new active sites for the oxygen reduction reaction (ORR). Accordingly, the ORR catalytic performance of the P-doped graphene was demonstrated to be better than or at least comparable to that of the benchmark Pt/C catalyst.
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