Anion exchange membranes containing no β-hydrogen atoms on ammonium groups: synthesis, properties, and alkaline stability
Daniel Koronka, Kenji Miyatake
Abstract
, above which the strain became smaller due to the larger water absorption. The membranes were not stable under harsh alkaline conditions (in 8 M KOH at 80 °C) gradually losing the hydroxide ion conductivity. Compared to our previous AEMs which contained typical aliphatic ammonium groups, the lack of β-hydrogen atoms did not practically improve the alkaline stability of AEMs possibly due to the main chain degradation but contributed to higher ion conductivity.
Topics & Concepts
ChemistryAmmoniumMembraneIon exchangeIonHydrogenInorganic chemistryOrganic chemistryBiochemistryFuel Cells and Related MaterialsMembrane-based Ion Separation TechniquesHydrogen Storage and Materials