Electrolytic Junctions with Rectifying Properties

Abstract

no analysis 5.13 C. Tri-n-octylamine Amine dry (No H2S04) <1 0.277 Sulfate wet 0.494 2.5 6.77 Bisulfate wet .943 0.94 5.40deviations from linearity in the measurement of dielectric constants of various triand tetraalkylammonium pier ates and bromides in benzene. They attributed this effect to an increase in aggregation with concentration, and noted that very symmetrical molecules showed little deviation from linearity, while very unsymmetrical ones showed large deviations. For the present solutes, the light scattering measurements indicated monodisperse aggregates; in addition, there is apparently little or no correlation between the non-linearity observed here and molecular symmetry. It seems likely that some other effect is responsible for the deviations observed.

Modeling of Forward and Reverse Bias Conditions in Bipolar Membranes

“…Then, Eqs. (14) and (18) can be used to obtain the electric current I, and the total potential drop across the membrane is computed through addition of the individual drops as I) The fixed charge concentrations are much greater than the bulk electrolyte concentrations. The salt coion concentration is very small, and decreases towards the bipolar junction.…”

Electrochemical mechanism of ion current rectification of polyelectrolyte gel diodes

“…voltages, see equations (7)(8)(9)(10). Solving these equations and the Poisson equation (11) leads to the local densities of hydrogen and hydroxide ions, n H (z) and n OH (z), and electrostatic potentials c(z).…”

“…Nanochannels of asymmetric shapes were shown to rectify ion currents that are generated by Ag/AgCl electrodes [3][4][5][6] . Polyelectrolyte gel diodes (PGDs) that are the double layers of two oppositely charged polyelectrolyte gels (that are swollen in aqueous solutions), sandwiched by two symmetric metal electrodes, are another type of ionic diodes that rectify ion currents [7][8][9][10][11][12][13][14][15][16] . These diodes are designed to operate with a physical mechanism that is analogous to conventional semiconductor diodes-the asymmetry in the permeability of ions across the interfaces between the two oppositely charged gels [8][9][10][11][12] .…”

Ionic current devices—Recent progress in the merging of electronic, microfluidic, and biomimetic structures

“…Intensive research on the ionic current rectification at a junction of acidic and basic electrolytes has been conducted. [22][23][24][25][26] The rectifying junction of these electrolyte diodes is formed in the hydrogel bridge which connects two electrolyte reservoirs. During reverse bias, where positive potential is applied to the electrode in the acid solution, H þ and OH À ions migrating from the electrolytes form water at the interface, where the ion concentration is drastically reduced.…”