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- W2024776989 abstract "Co3O4 nanowires have been successfully synthesized on nickel foam by a hydrothermal method. The morphology of Co3O4 is examined by scanning and transmission electron microscopy and the phase structure of Co3O4 nanowires is confirmed by X-ray diffraction. The electrochemical capacitance behavior of the Co3O4 nanowires electrode is investigated by cyclic voltammetry, galvanostatic charge/discharge test and electrochemical impedance spectroscopy in 6 mol dm−3 KOH solution. The results show that the Co3O4 nanowires have diameters of around 100 nm and the lengths up to 1–2 μm. The specific capacitance of Co3O4 nanowires is 1019.58 F g−1 at 3.38 A g−1 and 466.06 F g−1 at 33.80 A g−1. The capacitance loss is less than 5% after 1000 charge/discharge cycles at 3.38 A g−1 and with columbic efficiency higher than 98%. The enhancement of pseudocapacitive properties at a higher charging/discharging rate is due to the porous nanostructure and the high utilization of active material." @default.
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- W2024776989 date "2012-07-01" @default.
- W2024776989 modified "2023-10-16" @default.
- W2024776989 title "Preparation of Co3O4 nanowires grown on nickel foam with superior electrochemical capacitance" @default.
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- W2024776989 doi "https://doi.org/10.1016/j.electacta.2012.04.131" @default.
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