کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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728460 | 1461419 | 2014 | 9 صفحه PDF | دانلود رایگان |
Precursors of nanosized manganese dioxide were prepared through a chemical precipitation method. The synthesized precursors of MnO2 were subjected to thermo gravimetric analysis. The thermal analysis results showed the MnO2 formation at 500 °C. To study the effect of thermal treatments on the capacitive behavior of MnO2, the precursors were annealed at different temperatures (300, 400 and 500 °C). The annealed products were characterized by X-ray diffraction (XRD), Fourier transforms infra-red spectroscopy (FT-IR) and cyclic Voltammetry (CV) analysis. Among the annealed products, MnO2 annealed at 400 °C exhibits high specific capacitance. The morphologies of the products annealed at 400 and 500 °C were analyzed by a scanning electron microscope (SEM) and atomic force microscopy (AFM). The sample annealed at 500 °C shows spherical morphology with the inclusion of nanorods. To confirm the morphology of the annealed products, field emission transmission electron microscope (FE-TEM) measurements were carried out.
Journal: Materials Science in Semiconductor Processing - Volume 27, November 2014, Pages 553–561