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. An integrated plaster‐like micro‐supercapacitor is fabricated by the pencil drawing process combined with a mild solution deposition of MnO2 and exhibits excellent stretchability, flexibility, and biocompatibility together with high rate capability and cycling stability. The micro‐supercapacitors may act as skin‐mountable and high efficient thin‐film energy storage devices to power miniaturized and wearable electronic devices.