Description
Product Overview
The EC-MEA3S is a visualization membrane electrode assembly (MEA) electrolyzer designed for CO₂ electroreduction, water electrolysis, and related electrochemical studies. Square quartz windows on both the cathode and anode sides provide optical access for direct observation and high-speed imaging during operation. An open-view serpentine cathode flow field and multi-channel parallel anode flow field expose key gas–liquid transport regions, while high-purity titanium plates provide corrosion resistance and stable MEA clamping.
Key Features
- Dual-Sided Optical Access: Square quartz windows on both electrode sides enable direct observation and high-speed imaging of operating MEAs.
- Open-View Flow Fields: An open-view serpentine cathode flow field and multi-channel parallel anode flow field expose key gas–liquid transport regions.
- High-Purity Titanium Construction: High-purity titanium plates provide corrosion resistance and stable mechanical clamping for repeatable MEA assembly.
Technical Specifications
| Chamber Structure | Two-chamber |
| Electrode System | Two-electrode |
| Anode / Cathode | Sheet-type electrodes |
| Flow-Field Area | 1, 4, 5, 9, or 25 cm² (square); customizable |
| Flow-Field Size | 10 × 10, 20 × 20, 22.4 × 22.4, 30 × 30, or 50 × 50 mm; customizable |
| Cathode Flow Field | Open-view serpentine |
| Anode Flow Field | Open-view multi-channel parallel |
| Flow-Field Plate Material | Ti; PEEK optional |
| Fixture Plate Material | Ti |
| Optical Window Configuration | Square; dual-sided |
| Optical Window Material | Quartz |
Instrument Compatibility
- Optical Imaging Compatibility: Compatible with laboratory cameras, microscopes, and high-speed imaging systems for direct observation through the cathode- or anode-side quartz window.
- Potentiostat Compatibility: Compatible with commercial potentiostats for two-electrode MEA testing, including Corrtest Instruments (CS350M), subject to the required current and voltage ranges.
Typical Applications
- CO₂ Electroreduction: Visualizing reactant distribution, electrode wetting, flooding, and salt precipitation in gas-fed MEAs.
- Water Electrolysis: Observing bubble evolution and gas–liquid transport across the flow field.
- Dynamic Operation: Tracking transient bubble and flow behavior under stepped, pulsed, or fluctuating loads.
- Flow-Field and Electrode Evaluation: Comparing mass transport, liquid distribution, and bubble removal across different flow-field and electrode designs.
Related Published Application
High-Speed Bubble Visualization in Dynamic Water Electrolysis: Yin et al. investigated oxygen-bubble transport in a custom water electrolyzer incorporating a MEA and a rectangular transparent acrylic end plate on the anode side. The MEA comprised a Pt/C cathode, a PiperION membrane and a NiMoO₄@CoFe-LDH or RuO₂ anode. Bubble evolution across the multi-channel parallel anode flow field was recorded at 0.1 and 1 A cm⁻², while transient responses during current steps between 0.1 and 1 A cm⁻² were captured at 500 fps. The study revealed current-dependent bubble distribution, coalescence, detachment and transient reorganization.
Reproduced from Yin, Y. et al. Small 2025, e08103. © 2025 Wiley-VCH GmbH.
Capabilities Relevant to the EC-MEA3S
- Enables direct visualization of oxygen-bubble evolution across the anode flow field.
- Supports high-speed imaging under steady-state and stepwise-current operating conditions.
- Facilitates analysis of bubble distribution, coalescence, detachment and transient gas–liquid transport at medium-to-high current densities.
Note: The referenced study used a custom water electrolyzer incorporating an MEA, a rectangular acrylic anode-side window and a configuration comparable to the EC-MEA3S. It is included solely as a related application example; the article does not identify or use the EC-MEA3S.
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