One-pot synthesis of manganese oxide/graphene composites via a plasma-enhanced electrochemical exfoliation process for supercapacitors.

In this work, a feasible one-pot approach to synthesize manganese oxide/graphene composites, the so-called plasma-enhanced electrochemical exfoliation process (PEP), has been developed. Herein, a composite of graphene decorated with manganese oxide nanoparticles was prepared via PEP from a KMnO solution and graphite electrode under a voltage of 70 V in an ambient environment. By controlling the initial KMnO concentration, we obtained distinct MnO/graphene samples.