期刊
RSC ADVANCES
卷 5, 期 35, 页码 27953-27963出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ra02027a
关键词
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资金
- Bilateral R&T cooperation program between Germany and Greece, project INSOLCELL
- 973 Program of China [2013CBA01602]
- ERC Grant on 2DMATER
- Natural Science Foundation of China [51403126]
Sulfur-doped porous carbon nanosheets have been prepared by pyrolysis of graphene-coupled conjugated microporous polymers under an inert atmosphere. The obtained carbon nanosheets exhibited large specific surface areas up to 642 m(2) g(-1) and high sulfur weight content up to 7.11%. These highly porous carbon nanosheets have been studied as metal-free oxygen reduction electrocatalysts in alkaline environments and they were found to undergo oxygen reduction via a major 4-electron transfer pathway. They were then examined as substitutes for Pt-carbon electrocatalysts in PhotoFuelCells functioning in the presence of ethanol as a model fuel. It has been shown that sulfur doped porous carbon nanosheets yield functional cells with approximately the same characteristics as those employing Pt-carbon electrocatalysts, therefore, they mark a new class of metal-free catalysts.
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