Surface Curvature Effect on Dual-Atom Site Oxygen Electrocatalysis

23 November 2022, Version 1
This content is a preprint and has not undergone peer review at the time of posting.


Improved oxygen electrocatalysis is crucial for the ever-growing energy demand. Metal-Nitrogen-Carbon (M-N-C) materials are promising candidates for catalysts. Their activity is tunable via varying electronic and geometric properties, such as porosity. Because of the difficulty in modeling porosity, M-N-Cs with variable surface curvature remained largely unexplored. In this work, we developed a realistic in-pore dual-atom site M-N-C model and applied density functional theory to investigate the surface curvature effect on oxygen reduction and evolution reactions. We show that surface curving tailors both scaling relations and energy barriers. Thus, we predict that adjusting the surface curvature can improve the catalytic activity toward mono- and bifunctional oxygen electrocatalysis.


Oxygen reduction reaction
oxygen evolution reaction
dual atom site catalysis
M-N-C catalysts
density functional theory
surface curvature

Supplementary materials

Supporting Information: Surface Curvature Effect on Dual-Atom Site Oxygen Electrocatalysis
Computational details, description of the in-pore dual-atom site model, PDoS analysis, BEE error estimation, NEB analysis, and Table of all binding energies used in paper "Surface Curvature Effect on Dual-Atom Site Oxygen Electrocatalysis".

Supplementary weblinks


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