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Adv Mater. 2013 Nov 13;25(42):6138-45. doi: 10.1002/adma.201302753. Epub 2013 Aug 23.

Edge-selectively sulfurized graphene nanoplatelets as efficient metal-free electrocatalysts for oxygen reduction reaction: the electron spin effect.

Author information

1
Interdisciplinary School of Green, Energy/Low-Dimensional Carbon Materials Center, Ulsan National Institute of Science and Technology (UNIST), 100 Banyeon, Ulsan, 689-798, South Korea.

Abstract

To replace precious platinum (Pt)-based electrocatalysts for cathodic oxygen reduction reaction (ORR), edge-selectively sulfurized graphene nanoplatelets (SGnP) are synthesized as efficient metal-free electrocatalysts simply by ball-milling pristine graphite in the presence of sulfur (S8 ). The resultant SGnPs exhibit remarkable electrocatalytic activity toward ORR with better tolerance to methanol crossover/CO poisoning effects and longer-term stability than those of pristine graphite and commercial Pt/C electrocatalysts. Edge-Selectively Sulfurized Graphene Nanoplatelets as Efficient Metal-Free Electrocatalysts for Oxygen Reduction Reaction: The Electron Spin Effect.

KEYWORDS:

ball-milling; electrocatalysts; graphene nanoplatelets; oxygen reduction reaction; sulfurization

PMID:
24038522
DOI:
10.1002/adma.201302753
[Indexed for MEDLINE]

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