This paper reports on the systematic measurement and modelling of the impedance spectra in Bentonite support (solid pellets) with various Ni content (x = 0%, 1%, 3%, 5%, 7%, 13%, 15%, 17% and 20%) for the aim of investigating the dielectric loss tangent versus x. The extracted conductivity and loss tangent exhibited nonlinear variations with x and only rapidly increased above x = 13%. This behavior is more pronounced at low frequencies <100 kHz and is qualitatively consistent with reports about the conductivity of metal–insulator mixture, suggesting better dispersion efficiency of Nickel on Bentonite.

中文翻译：

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镍含量对膨润土介电性能的影响

本文报告了各种镍含量（x  = 0％，1％，3％，5％，7％，13％，15％，17％）的膨润土载体（固体颗粒）中阻抗谱的系统测量和建模和20％）以研究介电损耗正切与x的关系。提取的电导率和损耗角正切随x呈现非线性变化，并且仅在x  = 13％以上时迅速增加。这种现象在<100 kHz的低频下更为明显，并且在质量上与有关金属-绝缘体混合物电导率的报道一致，这表明镍在膨润土上的分散效率更高。