Loosely Packed Catalyst Layers Promote Gas Transport and Flooding Resistance in Gas Diffusion Electrodes for Electrochemical CO 2 Reduction

Key Points

• The research aims to investigate how loosely packed catalyst layers affect gas transport and flooding resistance in gas diffusion electrodes for CO2 electrolysis.
• Examined the structural properties of catalyst layers.
• Analyzed gas transport dynamics under acidic CO2 electrolysis conditions.
• Assessed flooding resistance in different catalyst configurations.
• Loosely packed layers showed improved gas transport efficiency.
• Increased C2+ selectivity was observed due to optimized local alkalinity.
• Flooding resistance was significantly enhanced, thus potentially extending electrode lifespan.