Mechanistic Insights into Cation Effects in Electrolytes for Electrocatalysis

Area of Science:

• Electrochemistry
• Materials Science
• Surface Chemistry

Background:

• Electrocatalysis traditionally focuses on adsorbate-surface interactions.
• The role of electrolyte components, particularly cations, in modulating electrocatalytic processes is increasingly recognized.

Purpose of the Study:

• To elucidate the mechanisms by which electrolyte cations influence electrocatalysis.
• To highlight the importance of the electrode-electrolyte interface in catalytic activity and selectivity.

Main Methods:

• Review of existing literature and theoretical perspectives.
• Analysis of cation interactions with the hydrogen-bond network, adsorbates, and the electrochemical double layer.

Main Results:

• Cations impact electrocatalysis by modifying hydrogen-bond networks, adsorbate behavior, electric fields, and catalyst electronic properties.
• Demonstrated influence of cations across diverse reactions like HOR, HER, OER, ORR, NRR, NO3-RR, and CO2RR.

Conclusions:

• Electrolyte cation effects are crucial for optimizing electrocatalytic performance.
• Future research should focus on leveraging cation-electrolyte interactions for designing efficient electrocatalytic systems.