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Effect of Additive DCTA on Electrochemical Tunnel Etching of Aluminum Foil

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Abstract

The effect of additive DCTA (1,2-diaminocyclohexane-tetraacetic acid) to HCl + H2SO4 solution on electrochemical tunnel etching behavior of aluminum foil was investigated. The results show that DCTA can activate Al foil surface by decreasing the self-corrosion potential and breakdown potential, which may be attributed to that DCTA forms chelate with dissolved Al3+, thus suppressing the oxide film formation. The tunnel density and effective tunnel number as well as uniformity of tunnel length of etching foil can be increased after DCTA addition. Furthermore, the specific capacitance of etching foil can be enhanced with trace addition of DCTA.

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Funding

The work is financially supported by Shenzhen Dongyangguang Industrial Development Co., Ltd.

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Authors and Affiliations

  1. Ruyuan Yao Autonomous Dongyangguang Industrial Development Co., Ltd., 512721, Shaoguan, China

    Yuanlong Xiao, Xiangjun Luo & Genpin Lyu

  2. Department of Chemical Engineering, Sichuan University, 610065, Chengdu, China

    Yuanlong Xiao

  3. Institute of Technology Research and Development of Electronic Materials, Shenzhen Dongyangguang Industrial Development Co., Ltd., 523871, Dongguan, China

    Fengrong He, Xia Zhang, Yungang Xiang & Kai Yu

Authors
  1. Yuanlong Xiao
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  2. Fengrong He
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  3. Xia Zhang
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  4. Yungang Xiang
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  5. Kai Yu
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  6. Xiangjun Luo
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  7. Genpin Lyu
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Contributions

The authors of Y. Xiao, Y. Xiang and K. Yu conducted the DC etching experiments. Y. Xiao carried out the theoretical calculations. X. Zhang conducted the electrochemical testing. Y. Xiao, F. He, X. Luo and G. Lyu participated in the writing of the text of the article. All authors participated in the discussion of the results.

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Correspondence to Yuanlong Xiao.

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Yuanlong Xiao, He, F., Zhang, X. et al. Effect of Additive DCTA on Electrochemical Tunnel Etching of Aluminum Foil. Russ J Electrochem 55, 1277–1283 (2019). https://doi.org/10.1134/S1023193519090131

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  • DOI: https://doi.org/10.1134/S1023193519090131

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