Citation: WU Hong-Ying, WANG Huan-Wen. Synthesis and Characterization of NiCo2O4 Nanoflower/Activated Carbon Fiber Composite and Its Supercapacitor Properties[J]. Acta Physico-Chimica Sinica, ;2013, 29(07): 1501-1506. doi: 10.3866/PKU.WHXB201304241
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In the present work, NiCo2O4 nanowires grown directly on carbon fibers self-organize into a nanoflower morphology. The materials are prepared by hydrothermal treatment and subsequent low-temperature annealing. Field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM) results reveal a hierarchical three-dimensional mesoporous structure, which facilitates ion transport and electronic conduction for fast redox reactions. As a result, the electrode achieves a respectable specific capacitance of 1626 F·g-1 at 1 A·g-1 and high rate capability (65% retention at 10 A·g-1), so it shows promise for application in supercapacitors.
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Keywords:
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NiCo2O4
, - Nanoflower,
- Hydrothermal treatment,
- Supercapacitor,
- Electrode material
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