High performance supercapacitors coupled with mechanical flexibility are needed to drive flexible and wearable electronics that have anesthetic appeal and multi-functionality.Two dimensional (2D) materials have attracted attention owing to their unique physicochemical and electrochemical properties,in addition to their ability to form hetero-structures with other nanomaterials further improving mechanical and electrochemical properties.After a brief introduction of supercapacitors and 2D materials,recent progress on flexible supercapacitors using 2D materials is reviewed.Here we provide insights into the structure-property relationships of flexible electrodes,in particular free-standing films.We also present our perspectives on the development of flexible supercapacitors.