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- W4200251962 endingPage "103802" @default.
- W4200251962 startingPage "103802" @default.
- W4200251962 abstract "Manganese dioxide/reduced graphene oxide (MnO2/RGO) nanocomposite material was synthesized by the in-situ anodic pulse electrodeposition method to fabricate symmetric supercapacitors. The effects of the pH value of the electrodeposition bath were considered on the properties of fabricated electrodes. Three pH values of 4, 7, and 10 were evaluated, and physicochemical properties were studied using field-emission scanning and transmission electron microscopy, X-ray diffraction, Fourier-transform infrared spectroscopy, nitrogen gas sorption isotherm, and thermogravimetric analysis. The electrochemical evaluation was performed by galvanostatic charge/discharge (GCD), cyclic voltammetry (CV), and electrochemical impedance spectroscopy techniques. The results revealed that the MnO2/RGO nanocomposite prepared at pH = 7 (i.e., MGO7) exhibited a maximum specific capacitance of 693.4 F g−1 at a current density of 0.5 A g−1. The symmetric supercapacitor based on MGO7 was also assessed using GCD and CV tests. Its specific capacitances at current densities of 0.5 and 20 A g−1 were 577.9 and 290.0 F g−1, respectively. The symmetric supercapacitor maintained 79.2% of initial capacitance after 5000 consecutive charge/discharge cycles at a current density of 4 A g−1. The highest energy density of 80.3 Wh kg−1 at the power density of 0.625 kW kg−1 and the highest power density of 25 kW kg−1 at the energy density of 40.3 Wh kg−1 was achieved by the fabricated supercapacitor." @default.
- W4200251962 created "2021-12-31" @default.
- W4200251962 creator A5006073532 @default.
- W4200251962 creator A5010969348 @default.
- W4200251962 creator A5035918686 @default.
- W4200251962 date "2022-02-01" @default.
- W4200251962 modified "2023-10-03" @default.
- W4200251962 title "In-site pulse electrodeposition of manganese dioxide/reduced graphene oxide nanocomposite for high-energy supercapacitors" @default.
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- W4200251962 doi "https://doi.org/10.1016/j.est.2021.103802" @default.
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