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- W2031750864 abstract "Novel flower-like Co3O4 hierarchical microspheres (HMs) with high porosity were synthesized via a facile hydrothermal strategy and template-free method. The samples were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), field-emission scanning electron microscopy (FE-SEM), and nitrogen adsorption–desorption at 77 K. The results showed that so formed three dimensional (3D) hierarchical microspheres consist of numerous 2D Co3O4 nanosheets (NSs) with random attachment and have a large surface area of 115m2 g−1. The pseudocapacitive behaviors of Co3O4 HMs were investigated by cyclic voltammograms, galvanostatic charge–discharge test and electrochemical impedance spectroscopy in 3.0 M KOH solution. The results revealed that the new Co3O4 HMs delivered a large specific capacitance of as high as 541.9 F g−1 and 483.8 F g−1 at 5 mV s−1 and 1 A g−1, according to CV and galvanostatic test, respectively; 292.5 F g−1 at a very high discharge current density of 20 A g−1. Furthermore, it exhibited an outstanding stability reflected by a high capacitive retention of 89.5% after a 2000-cycles test at a high current density of 10 A g−1. The excellent electrochemical performance is attributed to novel morphology Co3O4 HMs, which possesses large surface area, unique hierarchical porous structures and low equivalent series resistance." @default.
- W2031750864 created "2016-06-24" @default.
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- W2031750864 date "2013-06-01" @default.
- W2031750864 modified "2023-10-12" @default.
- W2031750864 title "Novel morphologic Co3O4 of flower-like hierarchical microspheres as electrode material for electrochemical capacitors" @default.
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- W2031750864 doi "https://doi.org/10.1016/j.jallcom.2013.01.120" @default.
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