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The aim is to explore factors affecting the optimal reaction environment for CO2 electroreduction using gas diffusion electrodes.

January 25, 2026Open Access

Degradation and Failure Mechanisms of Gas Diffusion Electrodes for Electroreduction of CO₂ in Aqueous Electrolytes

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This thesis investigates CO2 electroreduction outcomes using gas diffusion electrodes, indicating design implications for efficiency.

The aim is to explore factors affecting the optimal reaction environment for CO2 electroreduction using gas diffusion electrodes.
Analysis of wettability, degradation mechanisms, and cell structure based on electrode architecture.
Experimentation with different hydrophobic treatments and binder materials.
Evaluation of current densities and Faradaic efficiencies across varied GDE designs.
Microporous layers enhanced current densities and Faradaic efficiencies, achieving >80%.
GDEs without microporous layers showed >90% Faradaic efficiencies with optimal hydrophobic treatment.
Instability in binder structures led to performance degradation within 1 hour of operation.

Verena Theussl (2025) studied this question.

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