Synthesis of nitrogen-doped multilayer graphene from milk powder with melamine and their application to fuel cells
- Title
- Synthesis of nitrogen-doped multilayer graphene from milk powder with melamine and their application to fuel cells
- Author
- Kwan-San Hui
- Keywords
- OXYGEN REDUCTION REACTION; CHEMICAL-VAPOR-DEPOSITION; CARBON NANOTUBES; ACTIVE-SITES; PHOTOELECTRON-SPECTROSCOPY; ELECTROCATALYTIC ACTIVITY; RECENT PROGRESS; CATALYSTS; NANORIBBONS; MECHANISM
- Issue Date
- 2014-09
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
- Citation
- CARBON, 2014, 76(), P.1-9
- Abstract
- We reported on the facile synthesis of N-doped multilayer graphene (N-MLG) from milk powder that uses melamine as a nitrogen-doping source with Fe2+ ions as catalytic growth agents. We showed that milk powder could be used as a precursor for large-scale N-MLG synthesis through heat treatment at 1000 degrees C under N-2 atmosphere for 45-120 min. In addition, heating time has a remarkable effect on N content and type in N-MLG. The resulting N-MLG exhibited higher catalytic activity than undoped graphene and carbon nanotubes (CNTs), as well as comparable catalytic activity to commercial Pt/C catalyst toward oxygen reduction reaction (ORR). Furthermore, the catalytic activity was sensitive to N content and type, particularly the ratio of pyridinic-N to total N atoms. Results showed that Fe atoms in N-MLG were found to function not as synergetic catalysts for ORR but as catalytic growth agents for N-MLG formation, thereby promoting and stabilizing N atoms. The present method could lead to the synthesis of bulk amounts of N-MLG, which is promising for applications in electrochemical energy devices, such as fuel cells and metal-air batteries. (C) 2014 Elsevier Ltd. All rights reserved.
- URI
- https://www.sciencedirect.com/science/article/pii/S0008622314003261?via%3Dihubhttp://hdl.handle.net/20.500.11754/52160
- ISSN
- 0008-6223; 1873-3891
- DOI
- 10.1016/j.carbon.2014.04.007
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > MECHANICAL ENGINEERING(기계공학부) > Articles
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