Published in Topics in Current Chemistry
AbstractMetal–organic frameworks (MOFs), constructed from metal ions and organic ligands through coordination assembly, exhibit considerable conductivity, which originates from the ionic or electronic transport pathway between the host architecture and guest species. In recent decades, the study of conductive MOFs has accelerated deservedly due to ...
Published in SN Applied Sciences
The solid polymer electrolyte film is prepared using polyvinyl alcohol and alum by the reactive blending method. Different wt% of alum is used for the preparation of the films. Temperature dependent properties of the films were characterized by IR, A/C conductivity, dielectric, conductance, DSC and TGA. The X-ray diffraction pattern of the synthesi...
Published in Ionics
Polycrystalline sample of the sodium aluminum molybdate, NaAl(MoO4)2, was prepared by conventional solid-state reaction method. Ultraviolet-visible-near-infrared (UV-Vis-NIR) diffuse reflectance spectroscopy revealed that the optical band gap values of this material at ambient conditions are 3.77 and 3.35 eV for direct and indirect transition, resp...
Published in Ionics
Magnesium (Mg) electrolytes are presently under investigation for their promising performance capabilities in the next generation of batteries. The present work studies Mg-ion transport in polymers using different types of Mg salts. Polymer electrolytes comprising poly(ethylene carbonate) (PEC) with Mg salts (MgX2; X = TFSI, ClO4) were prepared by ...
La2Mo2O9, premier composé de la famille LAMOX, est intéressant pour des applications comme électrolyte dans des piles à combustible car il présente une conductivité ionique élevée. Il a été découvert durant l'investigation du diagramme de phases de La2O3 -MoO3. Cela montre bien le rôle important de l'étude de diagrammes de phase dans la découverte ...
In this paper, we study the impact of H+ mobile ions on Radio Frequency (RF) performances of silicon dioxide deposited by Plasma Enhanced ChemicalVapor Deposition (PECVD) at lowtemperature (200°C), using a tetraethylorthosilicate (TEOS)-oxygenmixture as gas precursor. The presence of H+ ions within the dielectric is related to the low temperature d...
En remplaçant l’électrolyte liquide par un solide, les batteries tout-solide massivessont souvent considérées comme une solution aux problèmes de sécurité desbatteries Li-ion actuelles. La récente découverte du matériau Li10GeP2S12 destructure dite LGPS présentant une conductivité ionique équivalente à celles desélectrolytes liquides a réactivé ce ...
Published in Ionics
Polymer electrolyte films of biodegradable poly(ε-caprolactone) (PCL) doped with LiSCN salt in different weight ratios were prepared using solution cast technique. The effect of crystallinity and interaction between lithium ions and carbonyl groups of PCL on the ionic conduction of PCL:LiSCN polymer electrolytes was characterized by X-ray diffracti...
Published in Nanoscale Research Letters
In the present work, nanoceramics of Li5La3Ta2O12 (LLT) lithium ion conductors with the garnet-like structure are fabricated by spark plasma sintering (SPS) technique at different temperatures of 850°C, 875°C, and 900°C (SPS-850, SPS-875, and SPS-900). The grain size of the SPS nanoceramics is in the 50 to 100 nm range, indicating minimal grain gro...
Published in Ionics
II-NaFeP2O7 was prepared by conventional ceramic fabrication technique. Rietveld refinement, impedance properties, conductivity dispersion, electric modulus, and their scaling were carried out as a function of frequency and temperature. Thus, X-ray diffraction analysis indicates that the sample exhibits a single-phase nature with a monoclinic struc...
