Electrical properties of lithium niobium silicate glasses

All‐Solid‐State Lithium‐Ion Microbatteries: A Review of Various Three‐Dimensional Concepts

“…[ 101 ] Mixing LiNbO 3 with, for instance, silicates can increase the conductivity for crystalline materials several orders of magnitude. [ 102 ] For LiTaO 3 fi lms values around 8 ⋅ 10 − 8 S ⋅ cm − 1 are reported, [ 103 ] but also in this case amorphous bulk materials have been prepared with a much higher ionic conductivity. [ 101 ] A second important parameter is the electronic conductivity of these layers, this should be as low as possible, because this partially determines the self-discharge rate of the battery in which the electrolyte is used.…”

AC and DC conductivity analysis of hydroxyapatite and titanium calcium phosphate formed by dry ball milling

“…The AC conductivity (r AC ) measurement were performed with a Ardeen Hagerling Automatic Capacitance Bridge, model 2500, at 1 kHz, in the temperature range of 100-360 K, measuring the capacitance (C) and the conductance (G) of the sample. The r AC was calculated by r AC = e 00 xe 0 [14], where x is the angular frequency, e 0 is the dielectric permittivity of free space and e 00 is the imaginary part of the dielectric permittivity obtained through e 00 = (d AE G)/(xe 0 A), where d represents the sample thickness and A the sample surface area. To determine the AC activation energy (E a(AC) ) these results were adjusted using the Arrhenius expression (Eq.…”

Structural, electrical and thermal properties of borosilicate glass–alumina composites

“…The Arrhenius expression (Eq. (1)) was used to fit the temperature dependence of r dc [31][32][33][34],…”

“…The ac conductivity (r ac ) measurements were performed with an Ardeen Hagerling Automatic Capacitance Bridge, model 2500, operating at 1 kHz, in the temperature range of 200-360 K, measuring the capacitance (C) and the conductance (G) of the sample. The ac conductivity, r ac , was calculated using relation (2) [31,35]:…”

“…The frequency dependence of the complex permittivity, e ⁄ = e + je 00 , was measured at room temperature, in the frequency range from 100 Hz to 100 kHz using a SR850 DSP Lock-In Amplifier, in the typical lock-in configuration, measuring the ''in-phase'' and ''out-of-phase'' components of the output signal [31,35].…”