Synthesis of nitrogen-doped multilayer graphene from milk powder with melamine and their application to fuel cells

Zhao, Hong, Hui, K.S. and Hui, K. N. (2014) Synthesis of nitrogen-doped multilayer graphene from milk powder with melamine and their application to fuel cells. Carbon, 76. pp. 1-9. ISSN 0008-6223

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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 Fe 2+ 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 °C under N2 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.

Item Type: Article
Faculty \ School: Faculty of Science > School of Mathematics
Related URLs:
Depositing User: Pure Connector
Date Deposited: 24 Sep 2016 00:48
Last Modified: 22 Apr 2020 01:43
URI: https://ueaeprints.uea.ac.uk/id/eprint/60229
DOI: 10.1016/j.carbon.2014.04.007

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