Use of the radiofrequency-intermodulation distortion technique to investigate intrinsic nonlinearity at the electrode-electrolyte interface.
Use of the radiofrequency-intermodulation distortion technique to investigate intrinsic nonlinearity at the electrode-electrolyte interface.
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DOI：
10.1063/1.3683477
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发表时间：
2012-02
影响因子：
4
通讯作者：
R. Pande;Leiming Xie;W. Zagozdzon-wosik;K. Nesteruk;J. Wosik
中科院分区：
文献类型：
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作者：
R. Pande;Leiming Xie;W. Zagozdzon-wosik;K. Nesteruk;J. Wosik
我们报告了在电容器的金电极内放置Na（+）和Cl（-）离子的电解质的非线性射频响应的研究。该样品是频率可调电感-电容-电阻（LCR）并联谐振电路的一部分，采用两频互调失真技术进行测量。我们采用双层模型来分析观察到的非线性及其与离子浓度的关系。电极-电解质界面极化被发现是这种固有非线性的主要原因，并依赖于电解离子浓度。我们还测量和计算了所观察到的非线性的电阻和电容分量的系数。
We report on investigations of nonlinear radiofrequency responses of electrolytes with Na(+) and Cl(-) ions placed within gold electrodes of a capacitor. The sample was part of a frequency-adjustable inductance-capacitance-resistance (LCR) parallel resonant circuit, and measurements were carried out using the two frequencies intermodulation distortion technique. We employed double layer model to analyze the observed nonlinearities and their dependence on ionic concentration. Electrode-electrolyte interface polarization was found to be a predominant cause of this intrinsic nonlinearity and to be dependent on electrolytic ion concentration. We also measured and calculated coefficients of resistive and capacitive components of the observed nonlinearity.