The XION BPM-PFSA(1000 EW/G2 Series) composite bipolar membrane consists of Durion Gen2 based anion exchange layer (AEL) and PFSA 1000 based cation exchange layer (CEL). ). Xergy provides composite bipolar membranes with thicknesses of 30 or 75 µm. Durion G2 anion exchange resin is based on a polyphenylene backbone with a hybridized imidazole side chain which functions as the functional group for anion transfer within the AEL. PFSA 1000 resin is based on the perfluorosulfonic acid composition with a short side chain, and it has sulfonic acid as its functional group for cation transfer within the CEL.