Carbon nanosheets as a competent assistant to manganese dioxide show remarkable performance in supercapacitors

In the context of "carbon neutrality," supercapacitors, as an emerging green energy storage device, have shown advantages such as fast charging and discharging, high power density and good cycling performance, which have generated a wave of research among scholars. Among them, electrode materials are one of the key factors to determine the electrochemical performance of supercapacitors. The microscopic morphology, energy storage mechanism, capacitance and safety of electrode materials will have an important impact on the performance and application of supercapacitors.