▎ 摘　　要

Electrolyte-imprinted and copper crosslinked hybrid flexible electrodes have been considered as long-term stability supercapacitors. Graphene oxide, chitosan and copper (copper chloride) were crosslinked under ionic liquid medium using a hydrothermal technique. The fabricated flexible supercapacitor exhibits a maximum 356 F g(-1) specific capacitance and possesses extreme cyclic stability up to 200 000 cycles.