Paper‐Based Supercapacitors for Self‐Powered Nanosystems

Abstract
Energy storage on paper: Paper‐based, all‐solid‐state, and flexible supercapacitors were fabricated, which can be charged by a piezoelectric generator or solar cells and then discharged to power a strain sensor or a blue‐light‐emitting diode, demonstrating its efficient energy management in self‐powered nanosystems (see picture).