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Volume 15 Issue 1
Feb.  2008
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Jinxia Guo, Xiaogang Hao, Xuli Ma, Zhonglin Zhang,  and Shibin Liu, Electrochemical characterization of ion selectivity in electrodeposited nickel hexacyanoferrate thin films, J. Univ. Sci. Technol. Beijing, 15(2008), No. 1, pp. 79-83. https://doi.org/10.1016/S1005-8850(08)60016-X
Cite this article as:
Jinxia Guo, Xiaogang Hao, Xuli Ma, Zhonglin Zhang,  and Shibin Liu, Electrochemical characterization of ion selectivity in electrodeposited nickel hexacyanoferrate thin films, J. Univ. Sci. Technol. Beijing, 15(2008), No. 1, pp. 79-83. https://doi.org/10.1016/S1005-8850(08)60016-X
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Materials

Electrochemical characterization of ion selectivity in electrodeposited nickel hexacyanoferrate thin films

  • 通讯作者:

    Xiaogang Hao    E-mail: xghao@tyut.edu.cn

  • The ion selectivity of electrodeposited nickel hexacyanoferrate (NiHCF) thin films was investigated using electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV). NiHCF thin films were prepared by cathodic deposition on Pt and Al substrates. EIS and CV curves were determined in 1 mol/L (KNO3+C5NO3) and 1 mol/L (NaNO3+CsNO3) mixture solutions, which were sensitive to the concentration of Cs+ in the electrolytes. Experimental results show that all Nyquist impedance plots show depressed semicircles in the high-frequency range changing over into straight lines at lower frequencies. With increasing amounts of Cs+, the redox potentials in CV curves shift toward more positive values and the redox peaks broaden; the semicircle radius in corresponding EIS curves and the charge transfer resistance also increase. EIS combining CV is able to provide valuable insights into the ion selectivity of NiHCF thin films.
  • Materials

    Electrochemical characterization of ion selectivity in electrodeposited nickel hexacyanoferrate thin films

    + Author Affiliations
    • The ion selectivity of electrodeposited nickel hexacyanoferrate (NiHCF) thin films was investigated using electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV). NiHCF thin films were prepared by cathodic deposition on Pt and Al substrates. EIS and CV curves were determined in 1 mol/L (KNO3+C5NO3) and 1 mol/L (NaNO3+CsNO3) mixture solutions, which were sensitive to the concentration of Cs+ in the electrolytes. Experimental results show that all Nyquist impedance plots show depressed semicircles in the high-frequency range changing over into straight lines at lower frequencies. With increasing amounts of Cs+, the redox potentials in CV curves shift toward more positive values and the redox peaks broaden; the semicircle radius in corresponding EIS curves and the charge transfer resistance also increase. EIS combining CV is able to provide valuable insights into the ion selectivity of NiHCF thin films.
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