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, X-ray diffraction (XRD) and differential scanning calorimetric (DSC) studies show a decrease in crystalline size and crystallinity of the polymer PVDF with increasing LiPF 6 concentration.
114 citations
Book•
01 Nov 1980
TL;DR: In this paper, the effect of pressure on electrical conductivity at ambient temperatures and ambient temperatures was investigated. But the authors focused on the effect on the conductivity of dilute electrolyte solutions.
Abstract: 1. Introduction and Definitions.- 1.1. Introduction.- 1.2. Electrical Conductivity.- 1.3. Diffusion and Viscosity.- 1.3.1. The Diffusion Coefficient.- 1.3.2. Viscosity.- 1.4. The Stokes-Einstein and Nernst-Einstein Relations.- 1.4.1. The Stokes-Einstein Relation.- 1.4.2. The Nernst-Einstein Relation.- 1.4.3. The Walden Product.- 2. Ionic Conductivity in Dilute Electrolyte Solutions.- 2.1. Concentration Dependence of Conductivity of Dilute Electrolyte Solutions-Introduction.- 2.1.1. Derivation of the Conductance Equations.- 2.1.2. The Relaxation Effect.- 2.1.3. The Electrophoretic Effect.- 2.1.4. Conductivity Equations for Nonassociated Electrolytes.- 2.1.5. Conductivity Equations for Associated Electrolytes.- 2.1.6. Test of the Conductivity Equation.- 2.2. The Concentration Dependence of Conductivity at High Pressure and Moderate Temperatures.- 2.3. The Concentration Dependence of Conductivity at High Pressure and Temperature.- 2.4. The Effect of Pressure on Electrical Conductivity at Ambient Temperatures.- 2.4.1. Hydrogen-Bonded Solvents.- 2.4.2. Neutral Solvents.- 2.5. The Effect of Pressure on the Conductivity of Electrolyte Solutions at High Temperatures and Pressures.- 2.6. Excess H+ and OH- Mobility in Aqueous Solutions.- 2.7. The Limiting Ionic Conductivity of Ions in Solution.- 2.7.1. The Molecular Hydrodynamic Approach.- 2.7.2. The Transition State Theory.- 3. Ionic Conductivity in Low-Temperature Molten Salts and Concentrated Solutions.- 3.1. The Transition from Dilute Solutions to Molten Salts.- 3.2. Composition Dependence of Conductance in Concentrated Solutions and Low-Temperature Molten Salts.- 3.2.1. The Dilute Solution Approach.- 3.2.2. The Molten Salt Approach.- 3.3. Temperature and Pressure Dependence of Conductance in Concentrated Solutions and Low-Temperature Molten Salts.- 3.4. Electrical Relaxation in Glass-Forming Molten Salts.- 4. Electrical Conductivity in Ionic Liquids at High Temperatures.- 4.1. The Temperature and Pressure Dependence of Electrical Conductivity in Ionic Liquids.- 4.2. Theories for Electrical Conductivity in Ionic Melts.- 4.2.1. Transition State Theory.- 4.2.2. The Hole Model of Liquids.- 4.2.3. The Theory of Significant Liquid Structures.- 4.2.4. The Kirkwood-Rice-Allnatt Kinetic Theory of Electrical Conductance.- 4.2.5. The "Free Ion" Theory of Conductance of Barton and Speedy.- 4.2.6. Other Theories.- 5. Ionic Conductivity in Molecular Liquids and Partially Ionized Molten Salts.- 5.1. Introduction.- 5.2. The Temperature and Pressure Dependence of Conductivity.- 5.3. Conclusions.- 6. Electrical Conductivity in Liquids of Geological and Industrial Interest.- 6.1. Geological Liquids.- 6.1.1. Seawater.- 6.1.2. Geothermal Waters.- 6.1.3. Silicate Melts and Magmas.- 6.2. Industrial Electrolytes.- 6.2.1. Aqueous Industrial Electrolytes.- 6.2.2. Nonaqueous Electrolyte Solutions.- 6.2.3. Molten Salt Electrolytes.- References.
114 citations
TL;DR: It is found that tetrabutylammonium salts are immobilized inside the pores by a hydrophobic interaction between the alkyl groups of the salt and the framework, which significantly increases the hydrophilicity of ZIF-8, the first example of an MOF-based hydroxide ion conductor.
Abstract: We demonstrate a metal-organic framework (MOF) design for the inclusion of hydroxide ions. Salt inclusion method was applied to an alkaline-stable ZIF-8 (ZIF = zeolitic imidazolate framework) to introduce alkylammonium hydroxides as ionic carriers. We found that tetrabutylammonium salts are immobilized inside the pores by a hydrophobic interaction between the alkyl groups of the salt and the framework, which significantly increases the hydrophilicity of ZIF-8. Furthermore, ZIF-8 including the salt exhibited a capacity for OH(-) ion exchange, implying that freely exchangeable OH(-) ions are present in the MOF. ZIF-8 containing OH(-) ions showed an ionic conductivity of 2.3 × 10(-8) S cm(-1) at 25 °C, which is 4 orders of magnitude higher than that of the blank ZIF-8. This is the first example of an MOF-based hydroxide ion conductor.
114 citations
TL;DR: In this article, homogeneous nanocomposite films based on EO-EPI copolymers, LiClO4 and tunicate whiskers can be produced by solution-casting THF/water mixtures comprising these components and subsequent compression-molding.
Abstract: With the aim of developing ion-conducting solid polymer electrolytes that combine high ionic conductivity with good mechanical properties, we prepared and investigated nanocomposites of LiClO4-doped ethylene oxide-epichlorohydrin (EO-EPI) copolymers and nanoscale cellulose whiskers derived from tunicates. We show that homogeneous nanocomposite films based on EO-EPI copolymers, LiClO4, and tunicate whiskers can be produced by solution-casting THF/water mixtures comprising these components and subsequent compression-molding. The Young's moduli of the nanocomposites thus produced are increased by a factor of up to >50, when compared to the copolymers, whereas the electrical conductivities experience only comparably small reductions upon introduction of the whiskers. The nanocomposite with the best combination of conductivity (1.6 × 10−4 S/cm at room temperature and a relative humidity of 75%) and Young's modulus (7 MPa) was obtained with a copolymer having an EO-EPI ratio of 84 : 16, a whisker content of 10% w/w, and a LiClO4 concentration of 5.8% w/w. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 93: 2883–2888, 2004
113 citations
TL;DR: In this paper, the electrical properties of LSAMs were measured using the DC four-probe method as a function of temperature (500-1000°C) and oxygen partial pressure (1 −10−22 atm).
113 citations