Abstract

Microhole fluidic ionic diodes based on asymmetric deposits of charged ionomer membranes (e. g. Nafion or polymers of intrinsic microporosity) on microhole supports yield high rectification ratios for ionic transport. They are fabricated without the need for complex micro- or nanostructuring, and show potential for future applications in desalination and biosensing. Here, we propose an explanation for the functional principle for this type of materials-based ionic diode. A predictive computational model for ionic diode switching is based on finite element analysis. It is employed to determine the influence of diode geometry as well as type and concentration of aqueous electrolyte on the rectification behavior.

Original languageEnglish
Pages (from-to)897-901
Number of pages5
JournalChemElectroChem
Volume5
Issue number6
Early online date19 Jul 2017
DOIs
Publication statusPublished - 25 Mar 2018

Keywords

  • desalination
  • fluidic diode
  • iontronics
  • Poisson-Nernst-Planck

ASJC Scopus subject areas

  • Catalysis
  • Electrochemistry

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