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Probing Ion Current in Solid-Electrolytes at the Meso- and Nanoscale

Abstract

We present experimental approaches to probe ionic conductivity of solid electrolytes at meso- and nanoscales. Silica ionogel based electrolytes have emerged as an important class of solid electrolytes because they maintain both fluidic and high conductivity states at the nanoscale, but at the macroscale they are basically solid. Single mesopores in polymer films are shown to serve as templates for cast ionogels. Ionic conductivity of the ionogels was probed by two experimental approaches. In the first approach, the single-pore/ionogel membranes were placed between two chambers of a conductivity cell, in a set-up similar to that used for investigating liquid electrolytes. The second approach involved depositing contacts directly onto the membrane and measuring conductivity without bulk solution present. Ionic conductivity determined by the two methods was in excellent agreement with macroscopic measurements, which suggested that electrochemical properties of ionogel based electrolytes are preserved at the mesoscale, and ionogels can be useful in designing meso-scaled energy-storage devices.

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Publication details

The article was received on 30 Mar 2018, accepted on 23 Apr 2018 and first published on 23 Apr 2018


Article type: Paper
DOI: 10.1039/C8FD00071A
Citation: Faraday Discuss., 2018, Accepted Manuscript
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    Probing Ion Current in Solid-Electrolytes at the Meso- and Nanoscale

    J. Martinez, D. Ashby, C. Zhu, B. Dunn, L. A. Baker and Z. Siwy, Faraday Discuss., 2018, Accepted Manuscript , DOI: 10.1039/C8FD00071A

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