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- W2024146475 abstract "The cactus-like porous manganese dioxide (MnO2) was synthesized by a simple hydrothermal method assisted with the surfactant sodium dodecyl sulfate (SDS). The morphology, composition, property of the prepared materials were characterized by X-ray diffraction (XRD), Raman spectroscopy, Brunauer–Emmett–Teller (BET), Field Emission Scanning Electron Microscopy (FE-SEM) and Transmission Electron Microscopy (TEM) measurements. It was found that the sample without surfactant was composed of nanoflakes which piling up together, whereas in the presence of the surfactant, the MnO2 samples with the max specific surface of 321.9 m2 g−1 showed a porous cactus-like microstructure, consisted of uniform nanowires and porous nanoflakes. The electrochemical performances of the MnO2 with and without surfactant were analyzed using Cyclic Voltammetry (CV), Electrochemical Impedance Spectrometry (EIS) and Galvanostatic Charge–Discharge (GCD) tests. The results showed that the MnO2 assisted with 1 wt.% SDS displayed a higher specific capacitance of 187.8 F g−1 at the current density of 0.2 A g−1 compared with the MnO2 without surfactant (134.8 F g−1). And such MnO2 samples with higher specific capacitance also afford an excellent cyclic stability with the capacity retention of approximately 92.9% after 1000 cycles in 1 M Na2SO4 solution at a current density of 1 A g−1. The superior capacitive performance of the as-prepared materials could be attributed to its unique cactus-like porous structure, which provided good electronic conductivity, large specific surface area as well as fast electron and ion transport." @default.
- W2024146475 created "2016-06-24" @default.
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- W2024146475 date "2015-02-01" @default.
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- W2024146475 title "Preparation of the cactus-like porous manganese oxide assisted with surfactant sodium dodecyl sulfate for supercapacitors" @default.
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- W2024146475 doi "https://doi.org/10.1016/j.jallcom.2014.09.183" @default.
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