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- W2897418871 abstract "The past decade has witnessed substantial achievements on electrochemical energy storage in employing graphene-based composites; however, of which have been usually produced on a laboratory scale with a limited compatibility with future industrialization. Herein a facile, cheap, and scalable sonochemical method was developed to prepare MnO2/graphene composite electrodes for supercapacitors. Petal-like MnO2 arrays were densely grown on the surface of graphene oxide followed by annealing at 220 °C under an air atmosphere. The as-fabricated MnO2/graphene hierarchical composite electrodes deliver 292.9 and 156.1 F/g at 5 and 100 mV/s, respectively, showing higher specific capacitance and better rate capability compared to the MnO2 electrode. An excellent cyclability with a capacitance retention as high as 91.5% was also achieved for the composite electrodes after running 1000 cycles. Such excellent electrochemical performances are ascribed to the robust composite structure and synergetic contribution from petal-like MnO2 arrays and conductive graphene sheets." @default.
- W2897418871 created "2018-10-26" @default.
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- W2897418871 date "2019-03-01" @default.
- W2897418871 modified "2023-10-15" @default.
- W2897418871 title "Scalable sonochemical synthesis of petal-like MnO2/graphene hierarchical composites for high-performance supercapacitors" @default.
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- W2897418871 doi "https://doi.org/10.1016/j.compositesb.2018.10.055" @default.
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