Jump to main content
Jump to site search

Volume 120, 2002
Previous Article Next Article

Nonlinear behaviour of simple ionic systems in hydrogel in an electric field

Author affiliations

Abstract

The stationary behavior of ionic reaction–transport systems contained in hydrogel located between two reservoirs of electrolytes is investigated. The effects of the applied voltage, the composition of the electrolytes in the reservoirs and the distribution of fixed charge in the hydrogel on the spatial patterns of charge, electric potential, temperature and concentrations of the individual components are studied systematically by mathematical modelling. Such systems, containing only several ions (for example, Cl, K+, OH and H+) can function as electrolyte diodes and transistors and can exhibit oscillations and hysteresis. The mathematical description of the studied systems is based on balances of species, enthalpy and charge, on Poisson's equation and on the finite rate description of the water dissociation/recombination reaction, without assuming local electroneutrality. The modeling results are compared with experiments, including the system with hydrogel connecting reservoirs of strong base and acid studied by Noszticzius and co-workers. [L. H. Hegedus, N. Kirschner, M. Wittmann and Z. Noszticzius, J. Phys. Chem. A, 1998, 102, 6491 (ref. 1); L. H. Hegedus, N. Kirschner, M. Wittmann, P. Simon and Z. Noszticzius, Chaos, 1999, 9, 283 (ref. 2).]

Back to tab navigation

Article information


Submitted
19 Apr 2001
First published
13 Nov 2001

Faraday Discuss., 2002,120, 53-66
Article type
Paper

Nonlinear behaviour of simple ionic systems in hydrogel in an electric field

D. Šnita, M. Pačes, J. Lindner, J. Kosek and M. Marek, Faraday Discuss., 2002, 120, 53
DOI: 10.1039/B103530B

Social activity

Search articles by author

Spotlight

Advertisements