Ionic Conductivity

ionic conductivity

[i′än·ik ‚kän‚dək′tiv·əd·ē]
(solid-state physics)
The portion of the electrical conductivity of a solid that results from ionic conduction.

Ionic Conductivity

 

in biological systems, conductivity caused mainly by the diffusion of ions. It plays an important role in the transport of materials between the various structural elements of cells, in the generation and conduction of bioelectric impulses, and in the generation of differences in potentials between the various organelles of the cell, as well as between its external and internal mediums. The total ionic conductivity (mainly for K+, Na+, and Cl-) may be estimated from an equation taking the ionic gradients, the ionic permeability coefficients, and the membrane potential difference into account. The concept of partial ionic conductivity is used in the theory of the generation of bioelectric potentials for the fluxes of various individual ions.

References in periodicals archive ?
Interest in ionic liquids has been increasing, as they are non-flammable, non-volatile (they have a high boiling point), thermally and chemically stable and are endowed with high ionic conductivity and good electrochemical stability.
An electrolyte should have high ionic conductivity to assist rapid exchange of Li-ions between electrodes to maximize power delivery, while exhibiting low electrical conductivity to limit self-discharge and prolong life of the battery.
The 18-month program will focus on the development of functional, ionic liquid-based electrolyte and co-solvent combinations that exhibit high ionic conductivity and stability for application in 4.
The sulfonic acid groups introduced in polymer provide proton conductivity, and hydrophobic backbone enhance the physical properties and resulting polymer exhibits high temperature resistance, good mechanical property, and high ionic conductivity [18, 19], Sulfonated aromatic polyamides have been recommended as potential PEM materials owing to fine mechanical and processing properties [20, 21], Sulfonated polyamide membranes may well control the methanol permeability and the sulfonic acid groups in the backbone render them hydrophilic to facilitate proton conductivity [22], However, the potential advantages of these PEMs in fuel cell are often hindered by their instability toward hydrolysis and heat.
These prismatic lithium-ion battery cells being delivered for the 2016 new model Chevrolet Malibu Hybrid employ heat resistant separators to ensure the ionic conductivity between the positive and negative electrodes, achieving not only a high output power density of 5,000W/kg, but also a high level of safety.
Based on the results, the produced nanostructure shortens the path for the diffusion of lithium ion and it increases ionic conductivity and charging and discharging speed in the battery.
Specifically, graphene's unique properties help to balance the overall electronic and ionic conductivity of lithium-ion battery cells that could not be achieved with other carbon additives.
The principle difference between the A and B series is a marked increase in the ionic conductivity (Table 5).
The technology enables a safer, highly flexible, and environmentally friendly fabrication method for producing batteries with high ionic conductivity, high cycling stability, mechanical strength and potentially increased cycle life.
ILs are usually characterized by a wide-range electrochemical window of stability, a reasonable ionic conductivity (similar to most non-aqueous electrolytes).
The material boosts ionic conductivity by a factor of nearly 100 million at room temperature.
Lithium batteries require electrolyte separators with enough mechanical resistance to prevent dendrite growth, which shorts out the battery, but with enough ionic conductivity for battery function.