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首页> 外文期刊>Materials Chemistry and Physics >Electrochemical etching of a niobium foil in methanolic HF for electrolytic capacitor
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Electrochemical etching of a niobium foil in methanolic HF for electrolytic capacitor

机译：电解电容器中甲醇HF中铌箔的电化学蚀刻

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摘要

Electrochemical etching of niobium foil in order to enlarge the surface area for the application in electrolytic capacitor was carried out in a methanolic electrolyte. We found that the pit density and depth are not linearly proportional to concentration of HF and applied potential: there is the optimal concentration of HF at each applied potential. The optimal etching condition was obtained at 50 V in 0.99 vol.% HF, which exhibited the capacitance of 350 μF cm~(-2). Pit density and depth of pits on electrochemical etched Nb foil under different conditions were counted from SEM images and electrochemical impedance spectroscopy (EIS) of the etched Nb foils was carried out for the capacitance measurement. Equivalent circuit model showing less than 5% error was suggested for applying to the etched niobium foil.
机译：为了扩大表面积以用于电解电容器中，对铌箔进行了电化学蚀刻，该蚀刻是在甲醇电解质中进行的。我们发现，凹坑的密度和深度与HF的浓度和施加的电势不是线性比例的：在每个施加的电势下都有最佳的HF浓度。在0.99 vol。％HF下于50 V电压下获得最佳刻蚀条件，其电容值为350μFcm〜（-2）。从SEM图像计算出在不同条件下电化学蚀刻的Nb箔上的坑密度和凹坑深度，并对蚀刻的Nb箔进行电化学阻抗谱（EIS）以进行电容测量。建议将显示小于5％误差的等效电路模型应用于蚀刻后的铌箔。

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  • 来源
    《Materials Chemistry and Physics》 |2013年第3期|810-815|共6页
  • 作者

    Kyungmin Kim; Jiyoung Park; Gihoon Cha; Jeong Eun Yoo; Jinsub Choi;

  • 作者单位

    Department of Chemical Engineering, Inha University, Incheon 402-751, Republic of Korea;

    Department of Chemical Engineering, Inha University, Incheon 402-751, Republic of Korea;

    Department of Chemical Engineering, Inha University, Incheon 402-751, Republic of Korea;

    Department of Chemical Engineering, Inha University, Incheon 402-751, Republic of Korea;

    Department of Chemical Engineering, Inha University, Incheon 402-751, Republic of Korea;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Etching; Microstructure; Metals; Surfaces; Electrochemical techniques;

    机译：蚀刻;微观结构金属;表面;电化学技术;

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