  This review paper highlights the recent developments in supercapacitors by
pointing out the significance of appropriate electrode and device designs. We
reported ten extremely high-performance supercapacitors with specific
capacitance values among the highest available until now to the best of our
knowledge. These state-of-the-art designs employing innovative electrode
materials have been discussed along with their short descriptions. The
supercapacitors collected here possess the most promising potential for
facilitating next-generation systems in energy harvesting and storage. This
review is just the surface that can help provide a pathway for supercapacitor
research, which is still wide open for exploring and developing new advanced
materials for energy applications of the future.
