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- W2362178517 abstract "Manganese dioxide was prepared by hydrothermal treating a mixture solution of KMn O4,( NH4)2SO4and H2SO4 at 90 ℃ for 24 h. The obtained material was characterized by X-ray diffraction,scanning electron microscopy and transmission electron microscopy. The results indicate that it is α-Mn O2 with hollow urchin morphology. The forming process of α-Mn O2 was investigated by varying the hydrothermal reaction time. Moreover, the capacitive properties of α-Mn O2 were tested. Cyclic voltammogram measurement results show that the specific capacitance is 145 F / g at a sweep rate of 5 m V / s.The specific capacitance retention reaches 95% after 2000 cycles at a sweep rate of 20 m V / s." @default.
- W2362178517 created "2016-06-24" @default.
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- W2362178517 date "2015-01-01" @default.
- W2362178517 modified "2023-09-23" @default.
- W2362178517 title "Preparation and Capacitive Properties of MnO_2 Hollow Urchin by Low-Temperature Hydrothermal Method" @default.
- W2362178517 hasPublicationYear "2015" @default.
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