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Exploration of the active center structure of nitrogen-doped graphene-based catalysts for oxygen reduction reaction

Lai, Linfei, Potts, Jeffrey R., Zhan, Da, Wang, Liang, Poh, Chee Kok, Tang, Chunhua, Gong, Hao, Shen, Zexiang, Lin, Jianyi, Ruoff, Rodney S.·2012·Energy & Environmental Science
DOI 10.1039/c2ee21802j
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Abstract

We present two different ways to fabricate nitrogen-doped graphene (N-graphene) and demonstrate its use as a metal-free catalyst to study the catalytic active center for the oxygen reduction reaction (ORR). N-graphene was produced by annealing of graphene oxide (G-O) under ammonia or by annealing of a N-containing polymer/reduced graphene oxide (RG-O) composite (polyaniline/RG-O or polypyrrole/RG-O). The effects of the N precursors and annealing temperature on the performance of the catalyst were investigated. The bonding state of the N atom was found to have a significant effect on the selectivity and catalytic activity for ORR. Annealing of G-O with ammonia preferentially formed graphitic N and pyridinic N centers, while annealing of polyaniline/RG-O and polypyrrole/RG-O tended to generate pyridinic and pyrrolic N moieties, respectively. Most importantly, the electrocatalytic activity of the catalyst was found to be dependent on the graphitic N content which determined the limiting current density, while the pyridinic N content improved the onset potential for ORR. However, the total N content in the graphene-based non-precious metal catalyst does not play an important role in the ORR process.

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Metadata

Authors
Lai, L., Potts, J. R., Zhan, D., Wang, L., Poh, C. K., Tang, C., Gong, H., Shen, Z., Lin, J., & Ruoff, R. S.
Venue
Energy & Environmental Science
Publisher
Royal Society of Chemistry (RSC)
Published
2012
Volume
5
Issue
7
Pages
7936
ISSN
  • 1754-5692 (ISSN-L)
  • 1754-5706
DOI
10.1039/c2ee21802j
OpenAlex
W2091938741
Cited by
2,277
References
2
FWCI
47.37
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Exploration of the active center structure of nitrogen-doped graphene-based catalysts for oxygen reduction reaction. https://app.cochat.ai/papers/10.1039/c2ee21802j
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Lai, L., Potts, J. R., Zhan, D., Wang, L., Poh, C. K., Tang, C., Gong, H., Shen, Z., Lin, J., & Ruoff, R. S. (2012). Exploration of the active center structure of nitrogen-doped graphene-based catalysts for oxygen reduction reaction. Energy & Environmental Science. https://doi.org/10.1039/c2ee21802j

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