Synthesis and capacitive property of δ-MnO2 with large surface area
Source abstract
Abstract
δ-MnO2 with layered structure is synthesized in a mixed system of KMnO4 and C3H6O (epoxypropane) by a facile low-temperature hydrothermal method at 90 °C for 24 h. The obtained product is characterized by X-ray diffraction (XRD), scanning electron microscopy, transmission electron microscopy, and N2 adsorption–desorption, and its electrochemical property was investigated by cyclic voltammetry method. Experiment results show that the as-synthesized product has a layered structure and a high specific surface area of 188 m2 g−1, and C3H6O existing in the reaction system plays a crucial role for the formation of δ-MnO2 particles. Electrochemical characterization indicates that the prepared material exhibits an ideal capacitive behavior with the initial capacitance value of 296 F g−1 in 1 mol L−1 Na2SO4 aqueous solution at a scan rate of 5 mV s−1 and good cycling behavior.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Supercapacitor Materials and Fabrication · Conducting polymers and applications · Polyoxometalates: Synthesis and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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