Gas Diffusion Electrode (GDE) Flow Electrolyzer with Three-Electrode Configuration for CO2 Electroreduction (CO2RR), CCO2RRGDEFE3E

In CO2 electroreduction (CO2RR), the Gas Diffusion Layer (GDL) is the most critical and vulnerable component of a flow electrolyzer. Unlike fuel cells, where the GDL simply manages water, in CO2RR it must balance a three-phase interface (Gas-Liquid-Solid) while resisting salt precipitation and flooding.

In a flow cell, the GDL faces unique degradation mechanisms that can cause cell failure in under 5 hours. (1) Salt Precipitation (Carbonate/Bicarbonate): Hydroxide ions (OH-) produced during the reaction react with incoming CO2 to form (bi)carbonates. These salts crystallize within the GDL pores, physically blocking CO2 from reaching the catalyst. (2) Electrowetting & Flooding: Under high current densities (>200 mA/cm2), the local potential and ion migration cause the hydrophobic PTFE coating to lose its effectiveness. The GDL becomes "wetted," allowing the liquid electrolyte to flood the gas channels. (3) CO2 Loss: Up to 80–95% of the CO2 feed can be wasted as it reacts with the alkaline electrolyte to form carbonate instead of being reduced to products

Part Number	CCO2RRGDEFE3E (C-CO2RR-GDEFE3E)
Structure/Components	Current Collector/Flow Channel: One piece of SS316L or Ti Central Flow Plate: PEEK Electrode Gasket: PTFE Membrane Frame: Silicone Tubing Connection: Barbed hose fitting  Three-electrode configuration, Ag/AgCl reference electrode is included.
Cell Sizes	Default effective area is 2.0 cm * 2.0 cm (4.0 cm2)  Other types of active areas, such as (1.6cm * 1.6cm) (3.2cm * 3.2cm), (5 cm * 5cm) are also available upon request.   Cell size: W60×H70 mm
Flow Channels	Standard flow channel is Serpentine                Other flow channel types: such as interdigital, parallel serpentine are also available upon request.               The inner view of the central flow plate (PEEK) is shown below.
Assembling Diagram
Heating Function (Optional)	The heating controller can be integrated with the "heating" version flow cells.
Flow Pump (Optional)	The flow pump (Max. 300 mL/min) can be supplied upon request
Note	The cell components should be thoroughly cleaned and dried after use.