The Fe-Mn-O composite is mostly used due to its some special properties. The Fe-Mn-O nanocomposite electrodes show an wide working potential window from - 0.2 to 1.0 V (vs. SCE), and a specific capacitance of 86.7 Fg^-1 or 0.4 Fcm^-2 at a constant current density of 1 Ag^-1 with good cycle life.
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The pseudocapacitance of MnO2 is highly influenced by its morphology.
Article Electrochemical performance studies of MnO2 nanoflowers reco...
In recent years, MnO2 is attracting attention for supercapacitor application, mainly due to the high abundancy of manganese [1] that contributes to low material cost as compared to the expensive ruthenium metal. Pang et al. reported high specific capacitance (700 F g−1) for MnO2 thin films in year 2000 and their findings sparked strong interest among energy research community for its application in supercapacitor electrode.
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