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Anion-Exchange Membrane (ECS) (T 50um * W 100mm * L 100mm) for CO2 Electroreduction (CO2RR), CCO2RRAEMECS
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The ECS anion-exchange membrane is based on a specialized imidazolium-functionalized styrene polymer that is can be specifically used for CO2 electroreduction (CO2RR).
The ECS AEM was specifically developed to solve the "stability and activity" problem in CO2 reduction. It is highly optimized for the conversion of CO2 to various products depends on the electrocatalysts, such as carbon monoxide (CO), formate, and hydrocarbons. It allows CO2 electrolyzers to operate at current densities exceeding 400–600 mA/cm², which is significantly higher than most standard AEMs can sustain. It is also used in cells producing Formic Acid/Formate, as it provides a robust barrier against liquid product crossover.
| Part Number | CCO2RRAEMECS (C-CO2RR-AEM-ECS) |
| Backbone | Imidazolium-functionalized styrene polymer |
| Reinforcement | None |
| Thickness (um) | ~50 um |
| Ion Exchange Capacity (meq/g) | ~1.5-2.0 |
| Area Resistance (Ω·cm², OH-) | < 0.1 (in 1M KOH) |
| Conductivity | > 100 mS/cm (at 60–80°C) |
| Primary Applications | CO2RR |
| Package Grade | 10cm*10cm/pcs/pack (other sheet size of 20cm*20cm also can be supplied upon request) |
Use Note:
Shipping Form: The membrane is typically shipped in the Chloride (Cl-) form on a plastic liner.
Conversion: Before use, it can be soaked the membrane in 1 M KOH for at least 12–24 hours. This replaces the Cl- ions with OH- ions.
Storage: Once activated in KOH, store the membrane in a sealed container of 1 M KOH or deionized water to prevent it from absorbing CO2 from the air and forming carbonates.
Reference:
- J. Hendershot, et al., Anion Exchange Membrane Transport and Accelerated Lifetime Testing of Membrane Electrode Assembly Cells for the Electrochemical Reduction of CO2-to-C2 Products, J. Electrochem. Soc., 2025, 172, 094509.
- C. A. G. Rodriguez, et al., Influence of Headgroups in Ethylene-Tetrafluoroethylene-Based Radiation-Grafted Anion Exchange Membranes for CO2 Electrolysis, ACS Sustainable Chem. Eng. 2023, 11, 4, 1508–1517.