Preparation method of univalence selective anion exchange membrane

The invention relates to a preparation method of a univalence selective anion exchange membrane. The preparation method comprises the following steps of (1) adding a mixed solution of NSBC and NaCl (sodium chloride) into a material solution chamber, adding a NaCl solution into a concentration chamber, filling a NaSO4 (sodium sulfate) solution into an electrode chamber A and an electrode chamber B, setting electric pulse parameters, energizing to perform electric pulse depositing, and enabling the NSBC to deposit onto the anion exchange membrane; (2) after depositing for a period of time, using a mixed solution of HACC and NaCl to replace the solution in the material solution chamber, exchanging the current directions at both sides, maintaining the constant electric pulse parameters, performing electric pulse depositing, and enabling the HACC to deposit onto the anion exchange membrane; (3) repeating the steps (1) and (2), so as to enable the NSBC saccharide and the HACC to deposit onto the anion exchange memb