Hydrophobic Anion Exchange Ionomer Dispersion (5 wt%) for CO2 Electroreduction (CO2RR), 10 mL/bottle, CCO2RRHAEID

The CCO2RRHAED is a high-performance anion exchange ionomer (AEI) that is specifically famous for its use in CO2 electrolyzers (converting CO2 to CO or formic acid, where it significantly outperforms many other ionomers by suppressing the competing Hydrogen Evolution Reaction (HER).

It is based on imidazolium-functionalized styrene chemistry. (1) Backbone: Styrenic (polystyrene-based). (2) Functional Group: 1,2,4,5-tetramethylimidazolium. (3) Shipping Form: It is almost always shipped in the Chloride (Cl-) form to ensure stability.

It has following features: (1) CO2 Affinity: The imidazolium groups have a natural affinity for CO2 molecules. This creates a "locally concentrated" CO2 environment at the catalyst surface, which is why it is the "gold standard" for CO2 reduction research. (2) Water Suppression: It is engineered to be relatively hydrophobic compared to some fuel cell ionomers. This helps prevent water from reaching the catalyst sites, which minimizes unwanted hydrogen production (HER) during CO2 electrolysis. (3) High Conductivity: Once converted to the OH- form, it maintains excellent ionic transport, allowing for high current densities (often >500 mA/cm2 in optimized cells).

Part Number	CCO2RRHAEID (C-CO2RR-HAEID)
Chemical Formula/Structure
Appearance	Transparent Liquid
Solvent	5 wt% in ethanol
Package Size	10 mL/bottle (the solid powder form with 0.4 g/bottle also can be supplied upon request)

Notes: Please try to store the anion exchange dispersion in a dry place (glovebox is the best option). 

References: 

1. M .Chang, et al. Ionomers Modify the Selectivity of Cu-Catalyzed Electrochemical CO2 Reduction, ChemSumChem. 2013, 16, 951–961.
2. M. Cao, et al. Tailoring the Ionomer Type to Optimize Catalyst Microenvironment for Enhanced CO2 Reduction in Membrane Electrode Assemblies, Carbon Energy., 2025, 7, 2308238.