Journal
CHEMCATCHEM
Volume 8, Issue 24, Pages 3725-3731Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cctc.201601005
Keywords
carbon; doping; electrochemistry; gels; nanostructures
Categories
Funding
- Harbin Institute of Technology at Weihai [WH20150203]
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A new carbon nanofiber codoped with nitrogen and phosphorus (NPCNF) that has a high specific surface area and good electrocatalytic properties for the oxygen reduction reaction (ORR) was synthesized using a template-free method. The fabrication process involves the pyrolysis of phytic acid doped polyaniline aerogel. A nonaqueous Li-O-2 battery with a specific capacity as high as 12607 mAhg(-1) was constructed by using an oxygen electrode based on NPCNFs supported by Ni foam. The NPCNF electrode showed a lower overpotential than pure carbon. The observed excellent electrochemical performance could be because of the unique foamlike N- and P-codoped carbon microstructure, which had a high ORR catalytic activity. These results indicate that the use of NPCNF as a cathode material could be a feasible approach to obtain a high-capacity Li-O-2 battery.
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