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中文摘要：
利用简单的水热法以及后续热处理，将钴酸镍纳米花成功生长在活性炭纤维支架上．场发射扫描电镜（FESEM）及透射电镜（TEM）结果表明，纳米花是由纳米针自组装而成，而纳米针呈多孔结构．这种三维复合多级结构非常有利于电解质离子的渗透和电子的传输．将该多孔钴酸镍纳米花，活性炭纤维布作为工作电极，表现出优良的电容性能．在1A·g^-1时，比电容高达1626F·g^-1；在10A·g^-1时，电容保持率为65％，具有超高的电容值和优异的倍率特性．
英文摘要：
In the present work, NiCo20, 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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