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We demonstrate the design and fabrication of hierarchical mesoporous NiCo2O4/MnO2 on carbon fiber papers via a facile hydrothermal for supercapacitor applications. The influence of preparation conditions (reaction temperature and KMnO4 concentration) on the electrochemical performance are evaluated in details. Our results showed that lower temperature (90°C vs. 110°C, 130°C) and lower concentration...
Ultralong α-MnO2 nanowires with length longer than 100μm have been prepared in gram-scale using a facile hydrothermal method without any template. The MnO2 was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM) and high resolution TEM (HRTEM). Time-dependent experiment was made to study the growth process of the nanowires. The ultralong...
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