采用直流电阳极氧化法在高纯铝箔上制备了多孔阳极氧化铝(AAO)膜,同时采用扫描电子显微镜(SEM)、循环伏安(CV)和电化学阻杭谱(EIS)等技术对AAO膜的表面形貌、厚度和比表面电容性质等进行了表征.结果表明,AAO膜由垂直于膜表面的、孔径在60～80nm之间的平行纳米孔道组成,膜的多孔层厚度约为20μm左右;AAO膜的比表面电容值约为5μF/cm2,使用电压范围约为200～250V;该结果表明,多孔阳极氧化铝在中高压铭电解电容器的阳极箔上的应用存在着较好的前景.%The porous anodic aluminum oxide was prepared on the high-purity aluminium foil through direct cur-ret anodizing. While scanning electron microscope was used to observe the surface topography and thickness of the oxide. Cyclic voltammetry and eletrochemical impedance spectrum were used to characterize the capacity of the AAO. The results revealed that AAO consist of parallel nanopore canals with the pore diameter of 60 to 80nm,which were perpendicular to the surface,the thickness of the porous layer was about 20μm; the specific capacitance of the porous anodic aluminum oxide was about 5μF/cm2 ,and could be applied at voltages between 200 and 250V; the results indicated that the porous anodic aluminum oxide had a good future on the application of the medium and high voltage aluminum electrolytic capacitor.
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