Implicit Solvation Methods for Catalysis at Electrified Interfaces.

Area of Science:

• Computational chemistry
• Physical chemistry
• Materials science

Background:

• Implicit solvation is a coarse-grained method for simulating liquid electrolytes.
• It's increasingly applied to first-principles modeling of electrochemistry and electrocatalysis at electrodes.
• Modeling electrified solid-liquid interfaces (SLIs) with density functional theory (DFT) presents challenges in describing the double layer.

Purpose of the Study:

• To review implicit solvation methodology for modeling the electrified solid-liquid interface (SLI).
• To highlight its application in ab initio thermodynamics for surface catalysis.
• To discuss its role in mimicking electrode polarization and double-layer charging.

Main Methods:

• Review of implicit solvation techniques in atomic-scale simulations.
• Application within the ab initio thermodynamics approach.
• Modeling of electrode polarization and capacitive charging.

Main Results:

• Implicit solvation can mimic electrode polarization and double-layer charging beyond DFT supercell limitations.
• The method is valuable for studying surface catalysis at electrodes.
• Challenges remain in describing the double layer within tractable DFT supercell sizes.

Conclusions:

• Implicit solvation is an effective coarse-grained approach for simulating liquid electrolytes at electrodes.
• Its application in electrochemistry and catalysis is growing.
• Lack of experimental or high-level theoretical reference data hinders further advancement.