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- W4285011190 abstract "A pure MnO 2 cube and MnO 2 cube/r-GO nanocomposite were synthesized by the simple hydrothermal method. The structural formation, morphological and chemical composition of as-prepared MnO 2 cube/r-GO nanocomposite were characterized by powder X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS). The FE-SEM and TEM images were revealed that the MnO 2 cubes are homogeneously distributed on the surface of r-GO nanosheets. The electrochemical results showed that the high specific capacitance of MnO 2 cube/r-GO nanocomposite was 1570 F g −1 at a current density of 2 A g −1 in 1 M Na 2 SO 4 electrolyte solution. The long life-term cycling performance of MnO 2 cube/r-GO nanocomposite were delivered at outstanding capacitance retention of 99.3% subsequently 10,000 charge-discharge cycles at 8 A g −1 . Moreover, we construct the asymmetric supercapacitor (ASC) of MnO 2 /r-GO//r-GO for practical application. Herein, MnO 2 /r-GO act as an anode material and r-GO as a cathode material. The assembled device shows a high specific capacitance of 92.49 F g −1 at 1 A g −1 , high power density of 1.5860 W kg −1 , and a high energy density of 17.7555 Wh kg −1 at 8 A g −1 . Furthermore, the ASC device exhibits excellent capacitance retention of 98% after 10000 sequential charge-discharge cycles in 1 M Na 2 SO 4 electrolyte solution. Based on the electrochemical performance as-prepared MnO 2 cube/r-GO nanocomposite considered as the potential electrode material for energy storage application." @default.
- W4285011190 created "2022-07-12" @default.
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- W4285011190 date "2022-07-01" @default.
- W4285011190 modified "2023-09-27" @default.
- W4285011190 title "Design of Cube-like MnO<sub>2</sub>/r-GO Nanocomposite as a Superior Electrode Material for an Asymmetric Supercapacitor" @default.
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- W4285011190 doi "https://doi.org/10.1149/2162-8777/ac7e6a" @default.
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