Three-Dimensional Nitrogen and Boron Co-doped Graphene for High-Performance All-Solid-State Supercapacitors

摘要

The supercapacitor is one important energy-storage device since it can deliver orders of magnitude higher power density, cycle efficiency, and charge/discharge rates than a battery. In particular, all-solid-state supercapacitors (ASSSs) have gained worldwide attention as an emerging candidate for smart and efficient energy-storage devices due to the increasing demand for wearable and miniaturized electronics. ASSSs have been demonstrated to deliver high power density and unlimited cycle life at fast charge/discharge processes. Nanostructured carbon materials, such as onion-like carbon, carbide-derived carbon, carbon nanotubes (CNTs), and graphene, possess notable features including high surface area, high electrical conductivity, and good chemical stability, and therefore they have been widely explored as thin-film electrode materials for ASSSs.