Pressure-induced ionic to mixed ionic and electronic conduction transition in solid electrolyte LaF₃

Abstract

The ionic transport properties of solid electrolyte LaF3 was systematically studied under high pressures up to 30.6 GPa with alternate-current impedance spectra measurements and first-principles calculations. From impedance spectra measurements,...

Effects of high pressure on the lattice structure and electrical transport properties of BiOI

“…23 Parallel plate electrodes were fabricated on the DAC to measure the impedance spectrum. 18 We used two thin platinum foils as the electrodes and attached them to the top and bottom of the sample. And a layer of a mixture of Al 2 O 3 and epoxy was applied to insulate the electrode from the gasket (as shown in Fig.…”

“…However, as an effective means to regulate the structure and properties of materials, pressure can better display the relationship between the structure and the properties. [17][18][19][20] For example, by compressing multiple layers of ReS 2 , Yan et al found that pressure can be used to effectively modulate the photoelectric properties of transition metal disulphide (TMDS) by controlling the atomic displacement, which has potential applications in the design and manufacture of various stacked nanoscale devices. 21 Tong et al showed that the frequency of the input signal could regulate the electric transmission operation of Bi 2 O 3 under high pressure.…”

Pressure-Induced Abnormal Electrical Transport Transition from Pure Electronic to Mixed Ionic–Electronic in Multiferroic BiFeO3 Ceramics

“…Nevertheless, as the phase transition approaches the Pnma phase, the narrow clearance opens (Figure b). As a result, the localized electron background becomes transparent in the gap between the Bi 3+ and O 2– ions in the color contours, indicating ionic conduction behavior. , Therefore, the O 2– ions are easily migrated in BFO. In addition, we quantify the electron density, as shown in Figure e.…”

AC conductivity and modulus studies on (1-x)β-PbF2:xCeO2 composite solid electrolytes

“…In the recent past, Fluoride (F -) ion conducting batteries are under consideration as an alternative to Lithium (Li + ) ion conducting batteries due to the high theoretical energy densities of these batteries with a value of 5000 Wh/L [1]. Fluorine shows high stability due to its high electronegativity (3.98).…”

“…Fluoride ion-based electrolytes have favorable factors to provide the required energy density in batteries. Several fluoride ion conducting electrolytes such as M1-xPbxF2 (M=Ca,Sr,Ba), Pb1-xSnxF2, LaF3, BaF2 -SnF2 are reported in literature [1][2][3]. These composite solids exist in cubic fluorite structure and the conductivity is through the anti-Frenkel defect mechanism [3].…”