22 cm x 28 cm sheets of Sustainion^® Anion Exchange Membrane with a dry thickness at above 50 microns. They are moderately basic and designed for use with supporting electrolyte. Dioxide Materials has optimized them for use in alkaline water electrolyzers and in CO₂ electrolyzers as described in Kutz et al. Energy Technology 5, 929-936 (2017) and Masel et al. ECS Transactions, 75 (14) 1143-1146 (2016).
See also patents 9,370,773, 9,481,939.

These are special membranes with very low concentrations of the ethylene glycol plasticizer, for those who want to avoid ethylene glycol. The lack of plasticizer makes these membranes more brittle. The grade 60 membranes should be activated for 3 hours in 1 M KOH at 55 ^oC before use.

Note: these membranes can be used in a room temperature CO₂ electrolyzer after activation.

Due to recent high customer demand and supply chain issues, you may experience a longer wait for this product. Dioxide Materials team is making the best effort to resolve it quickly. Thanks for your patience and support!