Gas Diffusion Electrochemical Cell (Three-Electrode System), Model: EC-GDE3 / EC-GDE4

EC-GDE3 / EC-GDE4 Gas Diffusion Electrochemical Cell Three-chamber PEEK gas diffusion electrochemical cells featuring an optical observation window for direct process viewing, with 7 mm or 3 mm electrode spacing. Product Overview The EC-GDE3 / EC-GDE4 gas diffusion electrochemical flow cells are designed for advanced catalyst evaluation and moderate- to high-current-density testing. Their three-chamber, three-electrode configuration enables direct gas delivery to a sheet-type gas diffusion electrode together with controlled electrolyte circulation. A high-purity quartz observation window provides direct visualization of flooding, bubble formation, and salt deposition during operation. Key Features Visualized Flow-Cell Platform The high-purity quartz optical window enables direct observation of the reaction chamber during gas-diffusion-electrode testing. Selectable Electrode Gap Available with a 7 mm gap for general research or a shortened 3 mm gap for moderate-to-high-current-density measurements. Chemically Resistant PEEK Body The PEEK cell body provides strong chemical resistance for demanding electrochemical reaction conditions. Typical Applications Gas-Diffusion Electrode Studies Evaluating sheet-type GDEs under controlled gas and electrolyte-flow conditions. CO₂ Electroreduction Research Investigating catalytic activity, product selectivity and high-current-density performance. Visualized Electrocatalyst Testing Observing flooding, bubble accumulation and salt deposition during electrolysis. Technical Specifications Item Specification Chamber structure Three-chamber Electrode system Three-electrode Anode-cathode gap 7 mm (101017-1); 3 mm (101017-1.2) Active area 1 cm² (10 x 10 mm, customizable) Working electrode Sheet-type gas diffusion electrode Reference electrode Rod-type electrode Counter electrode Sheet-type electrode Cell body material PEEK Optical window material Quartz Instrument Compatibility Gas and Electrolyte Flow Compatibility Compatible with regulated laboratory gas supplies and electrolyte-circulation systems equipped with mass flow controllers, gas flow meters and peristaltic pumps. Potentiostat Compatibility Compatible with commercial potentiostats supporting three-electrode measurements, including CH Instruments (CHI660E, CHI760E, CHI1140C), Bio-Logic (VMP3), Corrtest Instruments (CS350M), Ivium Technologies (CompactStat.e20250), and Metrohm Autolab (PGSTAT204). Published Application Example High-Rate CO₂ Electroreduction to Ethylene A three-chamber flow cell was used to evaluate surface N-coordinated Cu gas-diffusion electrodes for CO₂ electroreduction. Continuous 1.0 M KOH circulation, controlled CO₂ delivery and three-electrode operation enabled evaluation of product selectivity, impedance, stability and moderate-to-high-current-density performance. The optimized catalyst achieved an ethylene Faradaic efficiency of 73.2% and an ethylene partial current density of −700.8 mA cm⁻². Demonstrated EC-GDE3 / EC-GDE4 Capabilities Supports direct CO₂ delivery to sheet-type GDEs under continuous electrolyte-flow conditions. Enables controlled evaluation of activity, selectivity, impedance and high-current-density response. Supports visual investigation of flooding and salt precipitation during extended electrolysis. Additional Published Applications Chen, X. et al. Nat. Commun. 2024, 15, 7691. Qing, H. et al. Nat. Commun. 2025, 16, 11263. Bai, Y. et al. Sci. China Mater. 2026, 69, 2747–2756.