The invention relates to an
imidazole onium salt anion-exchange membrane and a preparation method thereof, belonging to an anion-exchange membrane. The invention provides an
imidazole onium salt anion-exchange membrane with better
thermal stability and
chemical stability and a preparation method thereof. The
imidazole onium salt anion-exchange membrane is prepared by adopting a
polymeric membrane, and has a
chemical structure of one class of high polymers with side chains containing imidazole onium salt. The imidazole onium salt anion-exchange membrane has a membrane
ionic conductivity of being more than 0.01S / cm, has better
thermal stability and
chemical stability and can be used at high temperature and in a strong acid, strong alkali and strong
oxidizing agent. The preparation method comprises the steps of: soaking a
polymeric membrane in
acetone, and
drying to constant weight after cleaning; radiating a film by high-energy rays; placing the radiated film in a container, injecting monomers in the container to ensure that the film is completely immersed into the monomers, vacuumizing, charging
inert gases to the container until no air exists in the container, placing a water bathfor reacting after sealing, removing unreacted monomers, and
drying; and soaking the grafted film with a quaternization
reagent, and washing with deionized water to obtain the imidazole onium salt anion-exchange membrane.