@article{ART003144680},
author={Kalaidhasan Bhavani and Murugan Lavanya and Jeyabharathi C. and Malini R. and Vengatesan S. and Vasudevan Sanjeev and Ravichandran S.},
title={Electrochemical surface modification of carbon: a highly active metal-free electrocatalyst for hydrogen evolution reaction},
journal={Carbon Letters},
issn={1976-4251},
year={2024},
volume={34},
number={9},
pages={2259-2267},
doi={10.1007/s42823-024-00752-y}
TY - JOUR
AU - Kalaidhasan Bhavani
AU - Murugan Lavanya
AU - Jeyabharathi C.
AU - Malini R.
AU - Vengatesan S.
AU - Vasudevan Sanjeev
AU - Ravichandran S.
TI - Electrochemical surface modification of carbon: a highly active metal-free electrocatalyst for hydrogen evolution reaction
JO - Carbon Letters
PY - 2024
VL - 34
IS - 9
PB - Korean Carbon Society
SP - 2259
EP - 2267
SN - 1976-4251
AB - In recent years, the search on fabrication of highly efficient, stable, and cost-effective alternative to Pt for the hydrogen evolution reaction (HER) has led to the development of new catalysts. In this study, we investigated the electrocatalytic HER activity of the Toray carbon substrate by creating defect sites in its graphitic layer through ultrasonication and anodization process. A series of Toray carbon substrates with active sites are prepared by modifying its surface through ultrasonication, anodization, and ultrasonication followed by anodization procedures at different time periods. The anodization process significantly enhances the surface wettability, consequently resulting in a substantial increase in proton flux at the reaction sites. As an implication, the overpotential for HER is notably reduced for the Toray carbon (TC-3U-10A), subjected to 3 min of ultrasonification followed by 10 min of anodization, which exhibits a significantly lower Tafel slope value of 60 mV/dec. Furthermore, the reactivity of the anodized surface for HER is significantly elevated, especially at higher concentrations of sulfuric acid, owing to the enhanced wettability of the substrate. The lowest Tafel slope value recorded in this study stands at 60 mV/dec underscoring the substantial improvements achieved in catalytic efficiency of the defect-rich carbon materials. These findings hold promise for the advancement of electrocatalytic applications of carbon materials and may have significant implications for various technological and industrial processes.
KW - Toray carbon Anodization Hydrogen evolution Acidic medium Electrocatalysis
DO - 10.1007/s42823-024-00752-y
ER -
Kalaidhasan Bhavani, Murugan Lavanya, Jeyabharathi C., Malini R., Vengatesan S., Vasudevan Sanjeev and Ravichandran S.. (2024). Electrochemical surface modification of carbon: a highly active metal-free electrocatalyst for hydrogen evolution reaction. Carbon Letters, 34(9), 2259-2267.
Kalaidhasan Bhavani, Murugan Lavanya, Jeyabharathi C., Malini R., Vengatesan S., Vasudevan Sanjeev and Ravichandran S.. 2024, "Electrochemical surface modification of carbon: a highly active metal-free electrocatalyst for hydrogen evolution reaction", Carbon Letters, vol.34, no.9 pp.2259-2267. Available from: doi:10.1007/s42823-024-00752-y
Kalaidhasan Bhavani, Murugan Lavanya, Jeyabharathi C., Malini R., Vengatesan S., Vasudevan Sanjeev, Ravichandran S. "Electrochemical surface modification of carbon: a highly active metal-free electrocatalyst for hydrogen evolution reaction" Carbon Letters 34.9 pp.2259-2267 (2024) : 2259.
Kalaidhasan Bhavani, Murugan Lavanya, Jeyabharathi C., Malini R., Vengatesan S., Vasudevan Sanjeev, Ravichandran S.. Electrochemical surface modification of carbon: a highly active metal-free electrocatalyst for hydrogen evolution reaction. 2024; 34(9), 2259-2267. Available from: doi:10.1007/s42823-024-00752-y
Kalaidhasan Bhavani, Murugan Lavanya, Jeyabharathi C., Malini R., Vengatesan S., Vasudevan Sanjeev and Ravichandran S.. "Electrochemical surface modification of carbon: a highly active metal-free electrocatalyst for hydrogen evolution reaction" Carbon Letters 34, no.9 (2024) : 2259-2267.doi: 10.1007/s42823-024-00752-y
Kalaidhasan Bhavani; Murugan Lavanya; Jeyabharathi C.; Malini R.; Vengatesan S.; Vasudevan Sanjeev; Ravichandran S.. Electrochemical surface modification of carbon: a highly active metal-free electrocatalyst for hydrogen evolution reaction. Carbon Letters, 34(9), 2259-2267. doi: 10.1007/s42823-024-00752-y
Kalaidhasan Bhavani; Murugan Lavanya; Jeyabharathi C.; Malini R.; Vengatesan S.; Vasudevan Sanjeev; Ravichandran S.. Electrochemical surface modification of carbon: a highly active metal-free electrocatalyst for hydrogen evolution reaction. Carbon Letters. 2024; 34(9) 2259-2267. doi: 10.1007/s42823-024-00752-y
Kalaidhasan Bhavani, Murugan Lavanya, Jeyabharathi C., Malini R., Vengatesan S., Vasudevan Sanjeev, Ravichandran S.. Electrochemical surface modification of carbon: a highly active metal-free electrocatalyst for hydrogen evolution reaction. 2024; 34(9), 2259-2267. Available from: doi:10.1007/s42823-024-00752-y
Kalaidhasan Bhavani, Murugan Lavanya, Jeyabharathi C., Malini R., Vengatesan S., Vasudevan Sanjeev and Ravichandran S.. "Electrochemical surface modification of carbon: a highly active metal-free electrocatalyst for hydrogen evolution reaction" Carbon Letters 34, no.9 (2024) : 2259-2267.doi: 10.1007/s42823-024-00752-y
