Highly crystalline MnO2 nanostructures are fabricated by a simple acid reduction of KMnO4 solution followed by air-annealing. Their excellent electrochemical properties are useful for combinatorial morphology-controlled high performance supercapacitor applications.

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Crystal phase and morphology variations obtained by simple high-temperature annealing offer promising strategies for employing nanostructured manganese oxide as a cathode catalyst for microbial fuel cells (MFCs).

The application of graphene (RGO)-based composites as electrode materials in supercapacitors can be limited by the fabrication complexity and costs, and the non-environmentally friendly nature of the production process.

No abstract