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Surfactant stabilized nanopetals morphology of α-MnO2 prepared by microemulsion method

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Abstract

α-Manganese dioxide is synthesized in a microemulsion medium by a redox reaction between KMnO4 and MnSO4 in presence of sodium dodecyl sulphate as a surface active agent. The morphology of MnO2 resembles nanopetals, which are spread parallel to the field. The material is further characterized by powder X-ray diffraction, energy dispersive analysis of X-ray, and Brunauer–Emmett–Teller surface area. Supercapacitance property of α-MnO2 nanopetals is studied by cyclic voltammetry and galvanostatic charge–discharge cycling. High values of specific capacitance are obtained.

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Acknowledgments

Authors thank Dr. H. N. Vasan for discussions, Mr. P. Ragupathy for XRD, and Mr. K. C. Suresh for surface area measurements. One of the authors (SD) acknowledges the senior research fellowship from the Council of Scientific and Industrial Research, New Delhi, India.

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  1. Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore, 560 012, India

    S. Devaraj & N. Munichandraiah

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  1. S. Devaraj
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  2. N. Munichandraiah
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Correspondence to N. Munichandraiah.

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Devaraj, S., Munichandraiah, N. Surfactant stabilized nanopetals morphology of α-MnO2 prepared by microemulsion method. J Solid State Electrochem 12, 207–211 (2008). https://doi.org/10.1007/s10008-007-0364-7

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  • DOI: https://doi.org/10.1007/s10008-007-0364-7

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