Volume 210, 2018

Probing ion current in solid-electrolytes at the meso- and nanoscale

Abstract

We present experimental approaches to probe the ionic conductivity of solid electrolytes at the 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. The 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 the bulk solution present. Ionic conductivity determined by the two methods was in excellent agreement with macroscopic measurements, which suggested that the electrochemical properties of ionogel based electrolytes are preserved at the mesoscale, and ionogels can be useful in designing meso-scaled energy-storage devices.

Graphical abstract: Probing ion current in solid-electrolytes at the meso- and nanoscale

Associated articles

Article information

Article type
Paper
Submitted
30 Mar 2018
Accepted
23 Apr 2018
First published
23 Apr 2018

Faraday Discuss., 2018,210, 55-67

Author version available

Probing ion current in solid-electrolytes at the meso- and nanoscale

J. Martinez, D. Ashby, C. Zhu, B. Dunn, L. A. Baker and Z. S. Siwy, Faraday Discuss., 2018, 210, 55 DOI: 10.1039/C8FD00071A

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