Pencil‐Drawing Skin‐Mountable Micro‐Supercapacitors

In this study, integrated plaster‐like micro‐supercapacitors based on medical adhesive tapes are fabricated by a simple pencil drawing process combined with a mild solution deposition of MnO2. These solid micro‐supercapacitors not only exhibit excellent stretchability, flexibility, and biocompatibility, but also possess outstanding electrochemical performances, such as exceptional rate capability and cycling stability. Hence they may act as skin‐mountable and thin‐film energy storage devices of high efficiency to power miniaturized and wearable electronic devices.