Sustainion® XA-9 Alkaline Ionomer 5% in ethanol
5% Sustainion ionomer in ethanol mixture (25 ml). This is the chloride form of the ionomer used in Kutz et al. Energy Technology to appear (2017). It is designed for use in the cathodes of CO2 electrolyzers and can inhibit water electrolyzers. The ionomer is shipped in the chloride form and needs to be converted to the hydroxide form. The later step is often done after the catalyst ink containing the ionomer is deposited on the electrode.