Percolating ion transport in binary mixtures with high dielectric loss
2006 (English)In: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 88, 214103Article in journal (Refereed) Published
We investigate the ion transportpercolationproperties of a binary system of an ion conductor (NaCl) and an insulator (ethyl cellulose) for which the ac component of the conductivity is non-negligible over the entire measured frequency range. We find that the dc conductivity, extracted from a well-defined range of frequencies, can be described by a low percolation threshold, ϕc=0.06 three-dimensional conducting network. The low ϕc was explained by the water-layer-assisted ion conduction in micrometer-sized ethyl cellulose channels between NaCl grains. The present findings provide valuable knowledge for the analysis and design of a broad class of ion conducting functional materials.
Place, publisher, year, edition, pages
2006. Vol. 88, 214103
Engineering and Technology
IdentifiersURN: urn:nbn:se:uu:diva-95751DOI: 10.1063/1.2201556OAI: oai:DiVA.org:uu-95751DiVA: diva2:170082