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- W4385601987 abstract "The carbon defects play a crucial role in the electrocatalytic activity of small molecule reduction. The carbon-based electrocatalysts in electrochemical energy conversion and storage systems are more promising alternatives to expensive platinum-group catalysts. The various defects in the graphite materials were reported for their improved oxygen reduction reaction activity. The edge defective few-layer graphite material was synthesized using a ball-milling process with different ball diameters and synthesis methods (dry or wet). Spectroscopic and microscopic techniques characterize the ball-milled graphite materials. The increase in the defect density is confirmed by Raman and supported by the D parameter, estimated from X-ray Auger electron spectra of carbon. The simple ball milling of graphite leads to a 20 times increase in the surface area compared with commercial graphite, and its oxygen reduction activity is improved significantly. Mechanistic analysis indicates that the edge defects improved the 2 + 2-electron pathway by catalyzing the H2O2 reduction reaction. Theoretical analysis demonstrates that edge pentagons facilitate the dissociative H2O2 reduction activity with more positive onset potentials followed by the zig-zag edges. This study introduces the importance of ball-milling methods to synthesize the defect-rich few-layer graphite for electrocatalytic applications without harsh and corrosive chemicals." @default.
- W4385601987 created "2023-08-05" @default.
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- W4385601987 date "2023-08-05" @default.
- W4385601987 modified "2023-10-16" @default.
- W4385601987 title "Synthesis of Few-Layer Graphene by Ball-Milling for Oxygen Reduction: Kinetics and Mechanistic Insights" @default.
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- W4385601987 doi "https://doi.org/10.1021/acsaenm.3c00344" @default.
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