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Solvent Processable Tetraalkylammonium-Functionalized Polyethylene for Use as an Alkaline Anion Exchange Membrane

2010; American Chemical Society; Volume: 43; Issue: 17 Linguagem: Inglês

10.1021/ma101172a

1520-5835

Henry A. Kostalik, Timothy J. Clark, Nicholas J. Robertson, Paul F. Mutolo, Julie M. Longo, Héctor D. Abruña, Geoffrey W. Coates,

Advanced battery technologies research

We report the synthesis of a solvent processable, tetraalkylammonium-functionalized polyethylene for use as an alkaline anion exchange membrane (AAEM). The membranes are insoluble in both pure water and aqueous methanol (50 vol % water) at 50 °C but exhibit excellent solubility in a variety of other aqueous alcohols (e.g., 5 wt % AAEM in aqueous n-propanol, 50 vol % water). These solubility characteristics extend the potential utility of this system for use as both an AAEM and ionomer electrode material from a single polymer composition. The AAEMs generated are mechanically strong and exhibit high hydroxide and carbonate conductivities.