Topic
Ionic conductivity
About: Ionic conductivity is a research topic. Over the lifetime, 19412 publications have been published within this topic receiving 519167 citations.
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TL;DR: In this paper, Raman data analysis supported by DFT calculations on Na+-TFSI complexes, allow to determine the sodium ion solvation and charge carrier nature as a function of salt concentration.
240 citations
TL;DR: In this article, the ionogels were obtained by a non-hydrolytic method as perfect monoliths featuring both the transparency of silica and the ionic conductivity performances of ionic liquids.
Abstract: Luminescent ionogels were prepared by doping an europium(III) tetrakis β-diketonate complex into an imidazolium ionic liquid, followed by immobilization of the ionic liquid by confinement in a silica network. The ionogels were obtained by a non-hydrolytic method as perfect monoliths featuring both the transparency of silica and the ionic conductivity performances of ionic liquids. The ionogels contain 80 vol % of ionic liquid. The organic−inorganic hybrid materials showed a very intense red photoluminescence under ultraviolet irradiation. The red emission has a very high coloric purity.
240 citations
TL;DR: In this paper, the authors described composites, with their beneficial combination of mechanical and electric properties, are expected to have significant potential for lithium batteries, and the introduction of succinonitrile into the polymer electrolytes increases the material's ionic conductivity and conveys excellent mechanical properties.
Abstract: Solid polymer electrolytes with high ionic conductivities are prepared by using poly(ethylene oxide) (PEO) and poly(vinylidene fluoride-co-hexafluoropropylene) (P(VDF-HFP)) as polymer matrixes, succinonitrile (SN) as an additive, and lithium bis-trifluoromethanesulfonimide (LiTFSI) and lithium bisperfluoroethylsulfonylimide (LiBETI) as salts. In these systems, the introduction of succinonitrile into the polymer electrolytes increases the material's ionic conductivity and conveys excellent mechanical properties. The described composites, with their beneficial combination of mechanical and electric properties, are expected to have significant potential for lithium batteries.
240 citations
TL;DR: A lithium sulfonated covalent organic framework (denoted as TpPa-SO3Li) is demonstrated as a new class of solvent-free, single lithium-ion conductors, allowing reversible and stable lithium plating/stripping on lithiumMetal electrodes, demonstrating its potential use for lithium metal electrodes.
Abstract: Porous crystalline materials such as covalent organic frameworks and metal-organic frameworks have garnered considerable attention as promising ion conducting media. However, most of them additionally incorporate lithium salts and/or solvents inside the pores of frameworks, thus failing to realize solid-state single lithium-ion conduction behavior. Herein, we demonstrate a lithium sulfonated covalent organic framework (denoted as TpPa-SO3Li) as a new class of solvent-free, single lithium-ion conductors. Benefiting from well-designed directional ion channels, a high number density of lithium-ions, and covalently tethered anion groups, TpPa-SO3Li exhibits an ionic conductivity of 2.7 × 10-5 S cm-1 with a lithium-ion transference number of 0.9 at room temperature and an activation energy of 0.18 eV without additionally incorporating lithium salts and organic solvents. Such unusual ion transport phenomena of TpPa-SO3Li allow reversible and stable lithium plating/stripping on lithium metal electrodes, demonstrating its potential use for lithium metal electrodes.
240 citations
TL;DR: In this article, the effects of the transport properties of the cathode and electrolyte materials of solid oxide fuel cells (SOFCs) were reviewed, with a focus on the effect of the chromium poisoning of SOFC cathodes.
240 citations