▎ 摘　　要

NOVELTY - A polymer actuator comprises: an ion-conductive polymer membrane; a metal electrode disposed on both surfaces of the ion-conductive polymer membrane; and graphene dispersed within the ion-conductive polymer membrane. USE - As polymer actuator (claimed). ADVANTAGE - The polymer actuator reveals a superior driving characteristic using graphene as a plate-shaped carbon material. The graphene is dispersed within the ion-conductive polymer membrane of the polymer actuator, reverse ion migration due to an osmotic pressure occurring after solvent migration caused by electrostimulation in operation of the actuator can be reduced, and thus drivability of the polymer actuator is improved. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparing the polymer actuator, involving: a) dispersing a graphene oxide within an ion-conductive polymer solution; b) drying the dispersed solution to form an ion-conductive polymer membrane; and c) forming metal electrodes on both surfaces of the ion-conductive polymer membrane to form an ion-conductive polymer metal composite, where the method further involves reducing the graphene oxide after operation (a), operation (b), or operation (c).