What question did this study set out to answer?

The research aims to investigate how loosely packed catalyst layers affect gas transport and flooding resistance in gas diffusion electrodes for CO2 electrolysis.

April 3, 2026Journal of Materials Chemistry A1 citationsOpen Access

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

TPThi Ha My PhamÉcole Polytechnique Fédérale de Lausanne JZJie M. Zhang LLLoris LombardoTohoku University

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.

Abstract

Acidic CO2 electrolysis enables high CO2 utilization through carbonate protonation and high C2+ selectivity due to the elevated local alkalinity, yet its lifetime remains limited by gas diffusion electrode flooding....

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