▎ 摘　　要

NOVELTY - A zipped ion-exchange membrane comprises at least one cation-exchange polyelectrolyte crosslinked with at least one anion-exchange polyelectrolyte. When molar fraction of positive charges (x) of cation-exchange polyelectrolyte is 0.5, the zipped ion-exchange membrane is completely neutralized ion-exchange membrane, when the molar fraction of positive charges (x) of cation-exchange polyelectrolyte is more than 0.5, the zipped ion-exchange membrane is cation-conducting ion-exchange membrane, and when the molar fraction of positive charges (x) of cation-exchange polyelectrolyte is less than 0.5, the zipped ion-exchange membrane is anion-conducting ion-exchange membrane. USE - Zipped ion-exchange membrane e.g. completely neutralized ion-exchange membrane, cation-conducting ion-exchange membrane and anion-conducting ion-exchange membrane (all claimed) used for vanadium redox flow batteries and fuel cells. ADVANTAGE - The zipped ion-exchange membrane has excellent electroconductivity, chemical stability and electrochemical stability with long-term service life. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of the zipped ion-exchange membrane.