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Volume 21 Issue 10
Oct.  2014
数据统计

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Ning Peng, Li-Bo Liang, Ye-Dong He, Hong-Zhou Song, Xiao-Fei Yang, and Xiao-Yu Cai, Effect of tunnel structure on the specific capacitance of etched aluminum foil, Int. J. Miner. Metall. Mater., 21(2014), No. 10, pp. 974-979. https://doi.org/10.1007/s12613-014-0998-2
Cite this article as:
Ning Peng, Li-Bo Liang, Ye-Dong He, Hong-Zhou Song, Xiao-Fei Yang, and Xiao-Yu Cai, Effect of tunnel structure on the specific capacitance of etched aluminum foil, Int. J. Miner. Metall. Mater., 21(2014), No. 10, pp. 974-979. https://doi.org/10.1007/s12613-014-0998-2
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Effect of tunnel structure on the specific capacitance of etched aluminum foil

  • 通讯作者:

    Ye-Dong He    E-mail: htgroup@mater.ustb.edu.cn

  • The morphology of etched aluminum foil was observed using scanning electron microscopy, which led to the establishment of a cylindrical model and two merged models, considering the fixed weight loss of etching. The maximum of specific capacitance and the corresponding optimum values for tunnel sizes at various anodization voltages were predicted. The increased size distribution and taper of tunnels were demonstrated to decrease the specific capacitance, whereas the addition of polymeric additive into the tunnel widening solution was demonstrated to increase the capacitance. The formation of merged tunnels on the etched aluminum surface, irrespective of the presence of row-merged tunnels or cluster-merged tunnels, resulted in a dramatic decrease in the specific capacitance. It is concluded that, enhancing the uniformity of tunnel size and distribution and avoiding the formation of merged tunnels are the effective approach to achieving the higher capacitance for the tunnel etched and formed aluminum foil.
  • Effect of tunnel structure on the specific capacitance of etched aluminum foil

    + Author Affiliations
    • The morphology of etched aluminum foil was observed using scanning electron microscopy, which led to the establishment of a cylindrical model and two merged models, considering the fixed weight loss of etching. The maximum of specific capacitance and the corresponding optimum values for tunnel sizes at various anodization voltages were predicted. The increased size distribution and taper of tunnels were demonstrated to decrease the specific capacitance, whereas the addition of polymeric additive into the tunnel widening solution was demonstrated to increase the capacitance. The formation of merged tunnels on the etched aluminum surface, irrespective of the presence of row-merged tunnels or cluster-merged tunnels, resulted in a dramatic decrease in the specific capacitance. It is concluded that, enhancing the uniformity of tunnel size and distribution and avoiding the formation of merged tunnels are the effective approach to achieving the higher capacitance for the tunnel etched and formed aluminum foil.
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