The invention relates to a preparation method of a
proton exchange membrane for a fuel
cell, and belongs to the technical field of
energy materials. Modified octa(cobaltocenyl)-POSS is introduced intoa solution of functional
polymer materials such as
polyimide, polybenzimidazole, polyether-
ether-
ketone, polyether
sulfone and the like, and the high-performance anion
proton exchange membrane can beconveniently obtained through a solution
casting method. The preparation method is short in process and simple to operate, and meanwhile, compared with a commercial anion
proton exchange membrane, the exchange membrane prepared on the basis of the preparation method has high
ionic conductivity, excellent alkaline functional group stability, high
mechanical strength and low swelling property. Besides, POSS with good organic compatibility is introduced, and the organic-inorganic special structure of POSS is utilized, so that the formation of an effective micro-phase separation structure is promoted, the proton
conductivity of the
composite membrane is improved to a certain extent, and the
composite membrane has a wide application prospect in the field of anion proton exchange membranes.