High-Performance Asymmetric Supercapacitors of MnCoO Nanofibers and N-Doped Reduced Graphene Oxide Aerogel.

The working potential of symmetric supercapacitors is not so wide because one type of material used for the supercapacitor electrodes prefers either positive or negative charge to both charges. To address this problem, a novel asymmetrical supercapacitor (ASC) of battery-type MnCoO nanofibers (NFs)//N-doped reduced graphene oxide aerogel (N-rGO) was fabricated in this work. The MnCoO NFs at the positive electrode store the negative charges, i.