2019
DOI: 10.1007/s00339-019-2876-2
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Dependence of an electric capacitance on the constant voltage C = f(U) in pure bentonite, composites and semiconductors

Abstract: The present paper is devoted to studying the effect of dc voltage on the amount of electrical capacitance in pure bentonite, composites and semiconductors with different conductivity, as well as the dependence of electrical conductivity on the external field. The reason for the dependence of the capacitance on the DC voltage may be the presence of potential barriers in them and the dependence of the electrical conductivity (σ) on the applied voltage. In those samples where there is a large range of variation o… Show more

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Cited by 3 publications
(2 citation statements)
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“…The capacitance of both the MWCNT and CMK-3 support materials is determined using cyclic voltammetry by applying a solution of each material devoid of enzymes, mediators, and Nafion membranes to a glassy carbon electrode. The capacitance of the adsorbed substance on the electrode is represented by the area of its cyclic voltammetry curve [104,119]. Figure 4 depicts the cyclic voltammograms of MWCNTs and CMK-3 sieves.…”
Section: Materials Capacitancementioning
confidence: 99%
“…The capacitance of both the MWCNT and CMK-3 support materials is determined using cyclic voltammetry by applying a solution of each material devoid of enzymes, mediators, and Nafion membranes to a glassy carbon electrode. The capacitance of the adsorbed substance on the electrode is represented by the area of its cyclic voltammetry curve [104,119]. Figure 4 depicts the cyclic voltammograms of MWCNTs and CMK-3 sieves.…”
Section: Materials Capacitancementioning
confidence: 99%
“…Apart from the transformation to FE state, an additional sharp an-hysteretic peak, marked as 2 in figure 3, in permittivity at very high fields (∼ ±250 kV cm −1 ) is seen at all temperatures as well as frequencies. A Schottky type increase in current is observed from I -E characteristics in the similar field range [30] and this change in electrical conductivity might result a peak in capacitance [39].…”
Section: Dc-field Studiesmentioning
confidence: 99%