Electrochemical CO₂ Reduction: Electrocatalyst, Reaction Mechanism, and Process Engineering

Dear Colleagues,

The electrochemical reduction of CO₂ (CO₂RR) is a promising approach to converting CO₂ into value-added fuels and chemicals using renewable electricity, offering a sustainable means of carbon management and energy production. In recent years, we have witnessed significant advances in the development of electrocatalysts, the optimization of reactor designs, and the enhancement of system efficiency. However, challenges such as catalyst stability, product selectivity, competitive hydrogen evolution, and scale-up limitations must be addressed to advance CO₂RR for industrial implementation.

This Special Issue aims to showcase recent developments in CO₂ electrolysis, covering key aspects such as catalyst design, reaction mechanisms, electrolyte and reactor optimization, product purification, and system integration. Additionally, we welcome contributions that present approaches to CO₂ capture and purification that are tailored to electrochemical conversion.

The scope of this Special Issue includes, but is not limited to, the following topics:

• Development and characterization of electrocatalysts;
• Mechanistic studies and theoretical modelling;
• Electrolyte and reactor design for improved performance;
• Strategies to enhance product selectivity and energy efficiency;
• Product collection, separation, and industrial applications;
• Integration of CO₂ capture with electrochemical conversion.

We welcome original research articles, reviews, and perspectives that advance our understanding and practical implementation of CO₂RR, contributing to scalable and sustainable carbon conversion technologies.

Dr. Cátia Azenha
Dr. Ana Mafalda Vaz Martins Pereira
Guest Editors

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