Topic
Ionic conductivity
About: Ionic conductivity is a research topic. Over the lifetime, 19412 publications have been published within this topic receiving 519167 citations.
Papers published on a yearly basis
Papers
More filters
••
TL;DR: In this paper, a copolymere par polycondensation de dimethyldichlorosilane avec le mono-, di-, tetra-, ou nonaethyleneglycol was presented.
Abstract: Preparation du copolymere par polycondensation de dimethyldichlorosilane avec le mono-, di-, tetra-, ou nonaethyleneglycol
155 citations
••
TL;DR: In this paper, a combination of lattice strain and extended defects due to lattice mismatch between the heterogeneous structures may contribute to the enhancement of oxygen ionic conductivity in this layered oxide system.
Abstract: Layer-by-layer structures of gadolinia-doped ceria and zirconia have been synthesized on Al2O3(0001) using oxygen plasma-assisted molecular beam epitaxy. Oxygen ion conductivity greatly increased with an increasing number of layers compared to bulk polycrystalline yttria-stabilized zirconia and gadolinia-doped ceria electrolytes. The conductivity enhancement in this layered electrolyte is interesting, yet the exact cause for the enhancement remains unknown. For example, the space charge effects that are responsible for analogous conductivity increases in undoped layered halides are suppressed by the much shorter Debye screening length in layered oxides. Therefore, it appears that a combination of lattice strain and extended defects due to lattice mismatch between the heterogeneous structures may contribute to the enhancement of oxygen ionic conductivity in this layered oxide system.
155 citations
••
TL;DR: In this paper, the authors showed that the oxide gallate powders were sintered to densities greater than 97% of the theoretical densities of the perovskite structure, and that the conductivity of the doped gallates was higher than that of yttria-stabilized zirconia (YSZ).
Abstract: Oxides exhibiting substantial oxygen ion conductivity are utilized in a number of high-temperature applications, including solid oxide fuel cells, oxygen separation membranes, membrane reactors, and oxygen sensors Alkaline earth-doped lanthanum gallate powders were prepared by glycine/nitrate combustion synthesis Compacts of powders synthesized under fuel-rich conditions were sintered to densities greater than 97% of theoretical Appropriate doping with Sr or Ba on the A-site of the perovskite structure, and Mg on the B-site, resulted in oxygen ion conductivity higher than that of yttria-stabilized zirconia (YSZ), and high ionic transference numbers Doping with Ca and Mg resulted in lower conductivity than YSZ Thermal expansion coefficients of the doped gallates were higher than that of YSZ
155 citations
••
TL;DR: In this paper, the effect of sintering temperature on the phase compositions, microstructure and Li ionic conductivity is systematically investigated, and the results show that pure cubic phase LLZO can be obtained at a range of temperatures from 1100 to 1180°C for no more than 10min.
154 citations
••
TL;DR: In this paper, the ionic conductivity was found to be greatly dependent on the concentration of KOH and the interpenetrated polyvinylpyrrolidone in the PVA matrix.
154 citations