Nanostructured MnO2:: Hydrothermal synthesis and electrochemical properties as a supercapacitor electrode material

The structural, morphological and electrochemical properties of the hydrothermally prepared manganese oxide (MnO2) nanostructures are discussed in this paper. tnteresting nanostructures of MnO2, mixture of nanostructured surface with a distinct plate-like morphology and nanorods, have been prepared by employing hydrothermal synthesis under mild conditions. The specific surface area of the prepared material was 132 m(2) g(-1). Electrochemical properties of the synthesized nanostructured material were studied using galvanostatic cycling and cyclic voltammetry in a mild aqueous electrolyte that showed a high specific capacitance of 168 Fg(-1). In addition, the synthesized nanomaterial showed a good reversibility and cycling stability. (c) 2006 Elsevier B.V. All rights reserved.