Method for manufacturing multilayered ion exchange membrane with rectifying properties, and multilayered ion exchange membrane manufactured thereby

A method for manufacturing a multilayered ion exchange membrane with rectifying properties, the method comprising:

• (a) forming a base layer having n ion channels inside an ion exchange resin comprising at least one of a fluorine-based polymer, a hydrocarbon-based polymer, or a hydrocarbon-based polymer partially substituted with fluorine;
• (b) preparing a coating solution configured such that an ionomer and a mixture are uniformly dispersed in a solvent by blending the ionomer, the mixture, and the solvent in a predetermined ratio, wherein the ionomer comprises at least one of a fluorine-based polymer, a hydrocarbon-based polymer, or a hydrocarbon-based polymer partially substituted with fluorine, and the mixture suppresses creation of ion channels in the ionomer when mixed with the ionomer;
• (c) forming at least one coating layer by applying the coating solution obtained in the step b on the base layer formed in the step a;
• and
• (d) imparting rectifying properties of enabling ions to more easily flow in a specific direction by causing m ion channels to be formed in the coating layer in a process of removing the solvent through heat drying so that the ions are made to move from the base layer provided with a larger number of ion channels to the coating layer provided with a smaller number of ion channels, wherein the n is greater than the m.