Journal
ACS CATALYSIS
Volume 6, Issue 8, Pages 5215-5221Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acscatal.6b00945
Keywords
graphene; electrocatalysis; graphitic edges; oxygen reduction; ORR; intercalation; defects
Categories
Funding
- Science Foundation Ireland [13/CDA/2213]
- Estonian Research Council [PUT1063]
- Science Foundation Ireland (SFI) [13/CDA/2213] Funding Source: Science Foundation Ireland (SFI)
Ask authors/readers for more resources
Oxygen electrochemistry is at the core of several emerging energy conversion technologies. The role of carbon nanostructures in the electrocatalysis of the oxygen reduction reaction is not well understood. Herein we report an investigation of the role of graphitic edges in oxygen electrochemistry. A new synthetic method was used to create all-carbon model electrode materials with controlled morphology. Electron microscopy results show that synthesized materials possess a high density of graphitic edges. Electrochemical intercalation experiments, however, indicate that the density of electroactive edges does not correlate positively with microscopy results. The materials were then characterized as electrodes for the oxygen reduction reaction in alkaline media. Results suggest that electrochemical determinations of edge and defect density more accurately predict electrocatalytic activity, thus suggesting that in situ characterization techniques are needed to understand the carbon/electrolyte interface.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available