High anion permeability and high ion selectivity anion exchange membrane, preparation method and application thereof

The invention discloses a high anion permeability and high ion selectivity anion exchange membrane, a preparation method and application thereof. The material of the ion exchange membrane is a hydrophobic alkyl modified free dication string structure type polyphenyl ether ionomer of C1 to C6, and the ion selective permeability is 90% to 96% and the sheet resistance is 1.60 to 5.57 omega/cm whenIEC is 1.30 to 2.59 meq/g. Hydrophobic alkyl modified series dications of C1 to C6 are introduced into a poly (2,6-dimethylphenyl ether) skeleton, so that the charge density of the obtained membraneis effectively improved, the problem of low anion-cation selectivity of a commercialized mono-quaternary ammonium ion PPO anion exchange membrane when the commercialized mono-quaternary ammonium ion PPO anion exchange membrane has higher IEC is solved, and the ion conductivity of the membrane is enhanced while the anion-cation selective permeability of the membrane is improved. The membrane has good mechanical properties, and